As long as the analysis room has this standard, the landlord's analysis room does not want to find a tester manual to see it. This type of book general chemical bookstores have to buy
As long as the analysis room has this standard, the landlord's analysis room does not want to find a tester manual to see it. This type of book general chemical bookstores have to buy
GB/T601, GB/T602 National Standard for the People's Republic of China GB/T 601-2002 instead of GB/T 601-1988 Chemical reagent standard titration solution Preparation CH EM IC Al R EA GE NT- Preparations of Standard Volumetric Solutions 2002-10-15 Release 2003-04-01 Implement National People's Republic National Quality Supervision Inspection and Quarantine General Administration Published 121 GB/T 601-2002 n scoop This standard instead of GB/T 601-1988 \"Preparation of Standard Solutions for Chemical Reagents Titration Analysis (Capacity Analysis)\" Essence The main changes are as follows compared with GB/T 601-1988: The standard name is modified to \"Preparation of Chemical Reaging Standard Titanium,; -Added to the speed of titration ( This version of 3.3); -The accuracy of the weighing (1988 version of 4.1.2.1,4.2.2.2.2.2.1, 4.6.2.1, 4.2.1, 4.12.2.1, 4.1 4 . 2.1, 4.15.2.1, 4.20.2. 1, 4.2 1.2.1, 4.22.2. 1, 4.23.2.2. (1988 version of 3.6; 3.6 of this version); - The \"comparison\" method (1988 version of 3.6,3.7, 4.1.3, 4.2.3, 4.3.3, 4.6.3, 4.9.3,,,,,,,,,,,,,,,,, 4.12.3,4.14.3, 4. 20.3, 4.21.3); - \"Expansion uncertainty of the average extension of the standard titration solution concentration in this standard should not be greater than 0.2 ，可根据需要 报出， 其计算参见附录B,'(本版的3.7、 附录B); — 增加了用二级纯度标准物质或定值标推物质代替工作基准试剂进行Provisions for calibration or direct preparation (3.8 in this version); increased the requirements for storage containers (3. 11 in this version); - Effective bit (1988 edition of 4.1.2.2,4.2.2.2.2, 4.3.2.2, 4.6.2.2, 4. 9. 2. 2, 4.12.2. 2, 4.14.2 .2, 4.20.2 .2, 4.2 1.2. 2, 4.22.2. 23.23.2. 2; This edition 4.1.2, 4.2.2,4.3.2, 4.6.2, 4.9.2.1, 4.1 2.2, 4.2,4.20.2.1, 4.21.2, 4.22.2, 4.23.2) ; -The preparation of the standard titration solution of potassium chromate standard titration solution, potassium iodine standard titration solution and sodium scratching solution adds method 2 (123] working benchmark reagent directly () 4.5.2 of this version of this version 4.5.2 , 4.10.2,4.19.2); - iconic standard titration solution and sodium sulfate standard titration solution add method two (4.9. 2. 2, 4.20 .2. 2); [ 123] - Modified the basic unit of the standard titration solution of sodium sulfate sulfate and the basic unit of the Australian standard titration solution (1988 version of 4.6.1, 4.7; 4.6.1, 4.7); - Modify The calibration method of the standard titration solution of the zinc -based zinc, the standard tituration solution and sodium sulfate standard tituration solution (1988 annual version of 4.16 A.17 A.20; 4.16, 4.17, 4.20 in this version); —The formulation of high -scratchy acid standard titration solution adds method 2 (4.23 of this version); - \"Potassium hydroxide and one ethanol standard titration solution (', 4.24 in this version); —And appendix A adds a supplementary value of sodium carbonate standard titration solution and potassium hydroxide one ethanol standard (1988 edition Appendix A; Appendix A in this edition). Appendix A of this standard is specified as specification Sexual Appendix and Appendix B are data appendix. This standard is proposed by the former National Petroleum and Chemistry Industry Bureau. The Institute of Chemistry Reagents, Chengdu Chemical Reaging Factory. This standard is mainly drafted: Hao Yulin, Liu Dongni, Wang Sufang, Qiang Jinglin, Guan Ruibao, Chen Junyu, Guo Shanpei. This standard was first released in 1965. In 1977 For the first revision, the second revision in 1988. GB/T 601-002 Chemical reagent Standard Titanium Preparation Scope This standard specifies chemical reagent standard titration The preparation and calibration method of the solution. This standard is applicable to the standard titration solution that prepares accurate concentrations to determine the purity of chemical reagentsDegree and impurities can also be selected for in other industries. 2 specification reference file The terms in the following standards have become the terms of this standard through the reference of this standard. For the reference documents of the date of note, all the subsequent modification forms (excluding the content of errors) or the revised version are not applicable to this standard. Use the latest version of these files. The latest version of the reference file that does not note the date is applicable to this standard. GB /T 6 03-2002 Preparation of Preparation and Products used in the test method of chemical reagent test methods GB /T 6 06-1988 chemical reagent water measurement general method (Carl Fei Rate) (EQVI SO6 353-1 : 1982) GB /T 6682-1992 Analysis Laboratory Water Specification and Test Method (Negiso 3696: 1987) GB /T 9 725-1988 Chemical Reagent Power Display Fittings (EQVI SO 6353-1: 1982) 3 General regulations 3.1 In addition to other regulations, the purity of the reagents used should be more than analyzed. Experimental water should comply with the specifications of third-level water in GB/T 6682-1992. 3.2 The concentration of the standard titration solution prepared by this standard is except for high atmosphere acids, all refer to the concentration at 20 ° C. When the standard titration solution calibrates, direct , if the temperature is different, the temperature should be corrected according to Appendix A. Standard titration solution calibration, direct preparation and use analysis Tian flat, anvil code, titer tube, capacity bottle, single -standard line straw, etc. must be regularly corrected. 3.3 In the calibration and use of standard titration solutions, the titration speed should generally be maintained at 6 ml./min-8 ml./min.:123. The value of the benchmark reagent reagent reagent reagent is less than equal. When .5 g, according to the precision. .0 1m g of weighing; when the value is greater than 0.5 g, is accurate. .1 mg weighing. 3.5 The concentration value of the preparation of standard titration solution should be within 5%of the scholars with a specified concentration value. 3.6 When the concentration of the standard titration solution of the standard titration solution, two people must perform experiments and do four parallel parallel each. The comparison of the poor values \u200b\u200bper person is not greater than the critical critical difference [C, C, C, C, The relative value of RSS (4) \"is 2'0.15%, and the relative value of the poor measurement results of the eight parallel determinations of the two must not be greater than the relative value of duplicate critical difference [C.RS5 (8)\". 18%. Take the average value of the two -person eight parallel measurement results as the measurement result. In operational processThe five valid numbers are retained, and the concentration value reports the results to take four effective numbers. 3.7 Expansion uncertainty of the standard titration solution concentration in this standard generally should not be greater. The intestine can be reported as needed. 3.8 The concentration of the standard titration solution of the standard reagent of this standard uses the standard reagent reagent. When the accuracy of the standard titration solution concentration is higher 1) Extremely poor relative value is the ratio of the polar difference to the average value of the concentration of the result, which is represented by \"%\". 2) The definition of duplicate critical polarity [C, R (n)] is seen. When the ratio of \"%\" is expressed in \"123] GB/T 601-2002 , you can use a secondary purity standard material or fixed value standard substance to calibrate or prepare directly, and calculate When the concentration of the quasi -drop solution, the concentration of the standard titration solution is less than equal to the standard titer of the standard titration solution in the calculation formula of the quasi -drop solution. When .02m OT/L, the standard titration solution with high concentrations should be boiled with high concentration and cold before leaving. 3. Except for other regulations, the standard titration solution is preserved at room temperature (150C-250C) generally does not exceed two months. When the solution appears turbidity, precipitation, color changes, etc. 3. The container that stored standard titration solutions should not be raised with the solution, and the thinnest part of the wall thickness should not be less than less. 5 mm 3. The solution used in the 12 standards is represented by (%) the mass scores (%), and only the (%) in the (95%) of the ethanol (95%) are the volume score 4 standard titration solution. 123] 4. 1 Clear Standard Titanus solution of sodium nitrogen Preparation Called 110 g sodium hydroxide, dissolved in 100 mL carbon dioxide water, shake it, injection of polyethylene In the container, it is closed to the solution . According to the provisions of Table 1, the upper layer liquid is taken with the amount of plastic tube, diluted with water -free water to 1 000mi, and shake it well. Table 1 The concentration of the standard titration solution of sodium hydroxide [C (NAOH)] Eight mol/L) Volume V/ML 1 54 0.5 27 [123 ] 0.1 5.4 4.1.2 calibration According to the provisions of Table 2, it is said to be removed from the benchmark reagent of hydrogen acid hydrogen acid hydrogen acid in 105`C --110 ° C to the constant weight. 123] Carbon oxide water dissolves, add 2 dropphenol fingersDemonstration liquid (10 g/IJ, dripped with the prepaid sodium hydroxide solution until the solution is pink, and keeps 30 s. At the same time, take a blank test. Table 2 Standard Titor Drit in Sodium hydroxide concentration [c (naOH)]/(mol/l.) The base reagent The quality of potassium hydrogen acid,/9 The volume of the volume of carbon dioxide [ 123] 1 7.5 80 0.5 3.6 80 0.1 0.75 50 The concentration of the standard titration solution of sodium hydroxide [C (NAOH)], the value is represented by Moore per liter (MOT/ i), pressed (prescribing formula (prescribed) 1) Calculation: c (naOH) m x 1 000 (V, one vs) m In the formula: M -— the accurate value of the quality of m -hydrogenate hydrogenate of m -benzene , The unit is the value of the volume of the volume of the unit of V -sodium hydroxide solution, the unit is milliliter (ml); ml); M the value of the Moore quality of Potassium hydrogenate in m, the unit is G/Mol (G/MOL) lm (khceh, 0,) \u003d 204.22] o 4.2 Standard Titor hydrochloride solution 4.2.1 Preparation Take the hydrochloric acid according to the prescribed in Table 3, note 10 00m L in water, shake it. Concentration [C (HCI)]/(mol/i) volume VML. 1 0.5 9o { 0. 1 {. 4.2.2 calibration According to the provisions of Table 4, it is said that the working benchmark reagent no water carbonate was burned to the constant heavy weight in the 270'c-300'C high-temperature furnace, which was dissolved in 50m L. In the water, add 10 drops of Australphenol green, a custard red indicator, and drip to use the prepared hydrochloric acid solution until the solution changes from green to dark red, boil 2 min, and then tuck to the solution and then dark red. At the same time, do a blank test. Table 4 The concentration of \"C (HCI)]/(m (, L, 'L)) working benchmark reagentless sodium carbonate of hydrochloric acid hydrochloric acid. 1 1.9 0. 5 0.95 0.1 0.2 Concentration kernel C (HCI) of standard titrative solution hydrochloride]. A '(HCI) M X 1 000 (VL one VZ) m In the formula: M-一 一)))))))))))))) The accurate value of the quality of sodium sodium carbonate, the unit is gram (g); v1 -The value of the volume of the hydrochloric acid solution, the unit is milliliter (ml-); V: the value of the volume of the hydrochloric acid solution of the hydrochloric acid solution, the unit is milliliter The value of the quality, the unit is the standard titration solution of Smore (9/ 4.3 Sulfuric acid 4.3. 1 Preparation mollm (harm nayco,) \u003d 52.9 941 Aspen 5 sulfuric acid according to the specified table 5 , Slowly note 1000 ml of water, cool down, shake well. Table 5 The concentration of the standard titration solution of sulfuric acid [合 hzso,)]/(m o l/l) {volume v/ml of sulfuric acid ] 30 [巧 12 I I 1 1 0.5 0.1 4.3.2 calibration According to the provisions of Table 6 Take 2700C^ 300 \u0026 quot; C High -temperature furnace burned to constant working reagent reagent reagentless sodium carbonate, dissolved in 50m L. water, add 10 drops of Australian phenol green, a campaign liquid, prepare preparation for preparation The good sulfate solution is dripped to the solution from green to dark red, boiled 2 min, and then titer to the solution and then dark red. Do a blank test at the same time. Table 6 Sulfuric acid standard, solubble. Concentration [· [sound Hzsoj]/(mol/IJ working reference reagent reagent no water carbonate quality ./ Only 0.5 0.1 01.95 GB/T 601-2002 Standard Titanic solution sulfuric acid. Concentration benevolence (borrow hzso,) 1, value is represented by Moore per liter (mol/l), calculated according to formula (3): · (told HLS04, m x 1 000 (V, a V v, one V ,) M \u0026 amp;#8943; \u0026 amp;#8943; (3) In the formula: - The accurate value of the quality of sodium -free sodium carbonate, the unit is gram (g); - The volume of the sulfuric acid solution, the unit is milliliter (ml); - The value of the volume of the sulfate solution of the blank test, the unit is milliliter (ml); The value of quality, the unit is G/Mol [m (sound na, co,) \u003d 5 2.994], 4-4 sodium carbonate standard titer solution 4.4. 1 Preparation According to the provisions of Table 7, remove sodium -free sodium carbonate, dissolved in 1 000 ml, and shake it well. Wrap 7 The concentration of sodium carbonate standard titration solution [C (C (meteing nayco,)]/(m o l/l) The mass of sodium -free sodium carbonate m/q 4.4.2 calibration Introduction 35. 00 m L, -40.00 m L prepared sodium carbonate solutions, plus water of water with a volume of water, plus 10 drops of citrhenol green one red indicator liquid, and use the corresponding concentration of the corresponding concentration of hydrochloric acid specified in Table 8 The standard titration solution is titled until the solution changes from green to dark red, boiled for 2 min, after cooling , continues to titer until the solution is dark red. Dechat 8 The concentration of the standard titration solution of sodium carbonate [(合 na7c0,)]/(mol/l) The volume V/ml The concentration of the standard titration solution of the hydrochloric acid hydrochloric acid 123] [C (HCI)] eight mol/1) 1 50 1 0.1 20 0.1 The concentration of sodium carbonate standard titration solution [· (told Natco) \", the value is per liter (mol per mol (mol) /L) Means, calculate according to the formula (4): · (told na, co,)- v ·· \u0026 amp;#8943; \u0026 amp;#8943; (4) : V, -The volume of the volume of standard titration solution of hydrochloric acid, the unit is milliliter (ml); C, hydrochloride standards standard The accurate value of the concentration of the ticking solution is the accurate value of the volume of the volume of the sodium carbonate solution per liter (mol/L); · (including K 2CRZ0 7, 1 0.'mol/L 4.5. 1 method 1 4.5. 1. 1 Preparation Called 5g of potassium chromate, dissolved at 10 00m L, dissolved at 10 00m L, In the water, shake well. 4.5. 1.2 calibration The amount of 35.00 m L-40.00 m L is equipped with a well-preserved potassium chromate solution, placed in the iodine bottle, add 2g of potassium iodide and 20m L sulfate soluble GB/T 601- 2002 liquid (20%), shake it, place 10 min in the dark. Add 150 mL water (15`c-20} c), use sodium sulfate sulfate standard titer solution Ren C (NA2S201) \u003d 0.1 mol/L \"titer, add 2 ml starch indicator solution (10 g/L) at the end of the end, and continue to digue until the solution changes from blue to bright green. At the same time, make V. TestExamination The concentration of the standard titration solution of potassium chromate: (sound K, CR20,)], the value is represented by Moore per liter (mol/L), calculated according to the formula (5) ) _ (V, one v) ci v . \"'· One' ··, .................. V -sodium sulfate sulfate standard tither the volume value of the volume, the unit is milliliter (ml); V one -one blank test of the volume of the volume of sodium sulfate sulfate, the unit is milliliter (ml) ; C, the accurate value of the concentration of sodium sulfate sulfate standard titration solution, the unit is Moore per liter (mol/L); The accurate value of the volume of the potassium chromate solution, the unit is milliliter (the unit is milliliter ( ml), 4.5.2 method 2 Called 4.9 0 G 士 ..20G has been dried to a constant working reagent potassium chromium in the electric oven at 120 ° C 2 ° C. Yu Shui, In the 1000 ml capacity bottle, dilute to the scale. The concentration of the standard titration solution of potassium chromate is [· (including K2Cr, 0,)], and the value is per liter of Moore (mol/ mol/ L) Represents, calculate according to the formula (6): one · (sound kz cr2 o,) m x 000 1 claw 4 [123 ] In the formula: The accurate value of the quality of m -chromicopalate, the unit is gram (g); V accurate value of the volume of the potassate solution, the unit is milliliter (ml); [123 ] The value of the Moore quality of the potassium chromate, 4.6 Sodium sulfate sodium sulfate standard titration solution C (na, easy 03) 2. 0.1 m 01/i 4.6.1 with overhead [123 ] The unit is K/MoB [m (K2Cr, O,) 1 49.0311. Called 26 G sodium sulfate (NATSZ O, · 5H20) (or 16g sodium -free sulfate sulfate) , Add 0.2 g sodium without water carbonate, dissolve in 1 000 ml of water, slowly boil for 10 min, cool. Filter after two weeks. 4.6.2 calibration Called 0.18 g in. 120 ° C, 2 ° C, dry to constant work benchmark reagent, potassium chromate, placed in iodine bottle, dissolved in 25m 1_ water, Add 2g of potassium iodide and 20 mL sulfate solution (20%), shake well well , 10 min are placed in the dark.ML starch indicator (10 g/L), continue to tuck to the solution from blue to bright green . Do a blank test at the same time. The concentration of sodium sulfate standard titration solution [C (NA2S, O,)], the value is represented by Moore per liter (mot/L), calculated by formula (7): C (na, s, O,) RRCX 1 000 (V, one V,) m . two. . \u0026 amp;#8943;. two. two. .. ... ·· \u0026 amp;#8943; \u0026 amp;#8943; (7) In the form: The accurate value of the quality of the two -chromicopa acid, the unit is gram (g); v , The volume of sodium sulfate solution, the unit is milliliter (ml); V, —The value of the volume of sodium sulfate solution of the blank test, the unit is milliliter (ml); m -chromium heavy chromium The value of the Moore quality of potassium acid, the unit is K/Mol (g/mol) [m (talked K, CR, O,) \u003d 4 9.0 31], GB/T 601-2002 Australian standard Ding Ding solution [(told br,) one. · 1MO LT 1 Preparation Called 3g of potassium Australian acid and 25 G A vascularized potassium, dissolved in 1000 mi, water, shake well. 2 calibration Obtain 35. 00 ml, -40.00 ml prepared Australian solution, placed in the iodine quantity bottle, 47 price 47 (20%), shake, shake it in the dark, in the dark, in the dark, in the dark Surveillance 5 min. Add 150 mL water (15 ° C, 20 \u0026 quot; C) Add 2 G iodide and 5 ml of hydrochloride , use sodium sulfate standard titration solution [c (na2sioa) \u003d 0.1 mol/1. 1. ] Ding Ding, add 2 ml of starch indicator (10 g/L) at the end of the end, and continue to drop until the solution blue disappears. Do a blank test at the same time. , the concentration of the standard titration solution [· (Costing BRZ)], the value is expressed by the Moore per liter (mol/i.), Calculated by the formula (8) V, one vz) c, v formula: V, one -one sodium sodium sulfate, the volume of the standard titration solution, the unit is milliliter (ml '); v: one The value of the volume of the standard titration solution of sodium sulfate sulfate in the blank test is the accurate value of the concentration of the unit of sulfur sulfate in the standard of sodium sulfate. 1.); The accurate value of the volume of the A -Australian solution, the unit is milliliter (ml), 4.8 Potassium Australian Titanium Discoving Solid · (including K BRO, 1 0.'mol/L 4.8. 1 Preparation Called 3g of potassium Australium, dissolved in 10 00m L water, Shake well. 4.8. 2 calibration A amount of 35.00 m L-40.00 M L prepared the potassium Australization solution, placed in the iodine quantity bottle, add 2g of potassium iodide and 5m L hydrochloric acid solution (20%), shake well, place 5 min in the dark. Add 150 ml of water (15 ° C and 20 \u0026 quot; c), and use sodium sulfate sulfate standard titration solution kernel C (na, s20,) .. 1 MOT/L] Tit Ding, add 2 mL starch indicator solution (10 g/L) at the end of the end, and continue to titer to the blue of the solution. At the same time, do a blank test. Ren '(Guangdong KBRO,)], v The value is represented by Moore per liter (MOT/L), calculated by formula (9): · (sound kbroo_ (v, one v) c, v ··· \u0026 amp;#8943; \u0026 amp;#8943; (9 \" In the form: V, sulfur sulfate standard titer volume value, the unit is milliliter ( ml); V -one blank test sodium sulfate sulfate standard tither volume value, the unit is milliliter (ml); C, the accurate value of the concentration of the standard titration solution of sodium sodium sulfate, The unit is Moore per liter (mol/L); The accurate value of the volume of V-potassium solution solution, the unit is milliliter (ml), 4.9 iodine standard titration solution · (Covenant 1 2,, 1 2, (Cost 1 2, (Cost 1 2, 1 2, One 0.'mol/L 4.9.1 Preparation It is called 13 G iodine and 35 G iodide, dissolved in 100 mL water, diluted to 1 000 ml, shaken well, stored in a brown bottle. [123 123. ] 4.9.2 4.9.2 calibration. The reagent dioxide is placed in the iodine bottle, adding 6m L standard titration solution \"C (naOH) \u003d 1m ol/L to solverse, add 50m L water, add 2 dropphenol 酞 酞 试 试 T liquid (10g /L), use sulfuric acid standard titer solution: · (H2S0,) 1mo L /L] Titrate to the solution colorless, force. /L), dripped with the prepared iodine solution until the solution was light blue.Do a blank test at the same time. 碘标准滴定溶液的浓度〔·(合12)l，数值以摩尔每升(M01/1-)表示，按式(10)计算: m X 1 000 (V, One vz) m . .. \u0026 amp;#8943; \u0026 amp;#8943;, two. ... \u0026 amp;#8943; \u0026 amp;#8943;,. \u0026 amp;#8943; \u0026 amp;#8943; (10) In the: accurate value of the quality of tritenuel dioxide, the unit is gram ( 9); V, the volume of the iodine solution, the unit is milliliter (ml); V2 — the value of the volume of the iodine solution of the blank test, the unit is milliliter (ml); m-. Two 0LYJ Mo. Essence Essence ,one. Essence Momo i7G/ mol) [m (buckle 6yo,) 1 49.460]. 4.9.2.2 Method 2 A amount of 35.00m L-40.00 m L prefined iodine solution 150m L water (15'c^ -20c), use sulfur sulfur sodium sulfate standard titer [c (na, s, 0,) to dick, add 2 mL starch indicator solution at the end of the end (10 g/i), continue to drop until the blue of the solution disappears. At the same time, the iodine test consumed by water at the same time: take 250m L water (150c-200c), add. .05m I_-0.20 m L, prepared the iodine solution liquid and 2ml starch indicator liquid (10 g/L), use sodium sulfate to sulfate standard titration solution [c (na \u0026 quot; sz03) \u003d 0.1 mol/i] titration To the solution blue , the color disappears. The concentration of iodine standard titration solution [. (IZ)], the value is represented by Moore per liter (mol/l), calculated according to the formula (1 \" (v; one recognition) c, v3 one v, .,. , Two .. \u0026 amp;#8943; \u0026 amp;#8943;, \u0026 amp;#8943; (11) 1-2 Type: V, sodium sulfate standard tituration solution volume of the volume of the volume Value, the unit is milliliter (ml); V, —The value of the volume of the standard titration solution of sodium sulfate sodium sulfate, the unit is milliliter (ml); The accurate value, the unit is Moore per liter (mol/L); V iodine solution's volume accurate value, the unit is milliliter (mi,); V, —— iodine solution of the plus people in the blank experiment in the blank experiment The accurate value of the volume,The unit is milliliter (LNL), 4.10 Potassium iodate standard titration solution 4.10.1 method 1 4.10-1 door formulation Called potassium iodate specified in Table 9, dissolved in 10 00m L water, shake well. Table 9 Potassium iodate standard titration. The quality of liquid [· (sound KIO,)]/(mol/L) potassium iodine,/9 0.3 11 0.1 3.6 4.10.1.2 calibration According to the provisions of Table 10, take it, take it, take it, take it, take it, take the provisions of Table 10, take it. The preparation of potassium iodine solution, water, and potassium iodide is placed in the iodine quantity bottle, add 5m L hydrochloric acid solution (20%), shake evenly, and place 5 min in the dark. Add 150 m1_ water (15'c ^-2 0'C), use sodium sulfur sulfate standard titration solution GB/T 601-2002 [c (na, s, 03) two. 1 mol/l] Titan, add 2 ml starch indicator solution (10 g/L) at the end of the end, and continue to drop until the solution blue disappears. Do a blank test at the same time. Table 10 Potassium iodine standard titration solution [· (KIO,) 7/(mol/L) The volume of V/ml of water about potassium iodine solution V/ml of potassium iodate solution, the mass of potassium iodide MFG [123 ] 0.3 11.00^-13.00 20 3 0.1 35.00^-40.00} 1 Potassium iodine standard titer concentration kernels (green KIO) \", the value is expressed by Moore per liter (Moo,), it is expressed, Calculate (12) calculate: · (KIO,) (V, One V2) c, v . \u0026 amp;#8943;. \u0026 amp;#8943;,. .. \u0026 amp;#8943;. two. Essence Essence ···. Two (12) type: V, —The value of the volume of sodium sulfate standard titration solution, the unit is milliliter (ml); V, —— White test sodium sulfate sulfate standard titration solution The volume value, the unit is milliliter (ml); . — The accurate value of the concentration of sodium sulfate standard titration solution is the accurate value of the volume of the unit of Moore per liter (mol/i); -2 Method 2 It is called the potassium iodine iodine that has been dried to the constant weight reagent in Table 11 in Table 11 in Table 11. Dilute to the scale in the capacity bottle. Table 1 1 Potassium iodine standard, fixed, liquid concentration kernel C (harmonious KK \u0026 GT;) 7 eight m al/L)The quality of potassium iodine in the working benchmark/9 0.3 10.70 士 0.50 0.1.1.57 士 0. 15 The concentration of potassium iodine standard titration solution [. (Li KIO) port, the value is represented by Moore per liter (mol/L), calculated according to the formula (13): n · (green ki0) ...... ... \u0026 amp #8943; \u0026 amp;#8943; (13) Make up ﹄﹄ \"3 m x 1 000 vm type: The quality of m -potassium potassium iodate The accurate value, the unit is gram (9); The accurate value of the volume of the pot potassium iodine solution, the unit of the unit of ml (ml) o Moore mass of m -iodate, 4.11 Standard Titoric Solution The unit is G/Mol (G/MOL) LM (including KIO,) \u003d · 667], · (True H2C2O N, One. 'Mol/L 4.11. 1 Preparation Called 6. 49 4.11.2 calibration A amount of 35.0 C oxalic acid (H2C20, · 2H20), dissolved in 1 000 ml water, shake well. ML^-40.00 mL prepares a good oxalic acid solution, add 100 mL sulfate solution (8+92), use potassium permanganate standard drop , liquid [(sound kmn0,) \u003d 0.1 m o light L] Ding Ding, heated to about 650C at the end of the end, continue to titer to pink solution, and keep 30 s. At the same time, a blank test. ] B . The value is represented by Moore per liter (mol/i), and calculated by the formula (14): GB/T 601-2002 · (Township H2C0,) _ (V, One V. ) c v .............................................................................................................................................................................................................................................. \u0026 amp;#8943; \u0026 amp;#8943; (14) In the form: V,-one one-one potassium permanganate standard titration solution volume value, the unit is milliliter (ml); V2-blank test potassium permanganate standard titer volume value, the unit is milliliter (ml); The accurate value of the concentration of CT-potassium permanganate standard titration solution is the accurate value of Moore per liter (mol/L); 123] 4.12 Potassium permanganate standard titration solution · (sound K MNO,)one. .1mo l/l 4.12.1 Preparation Called 3.3 G potassium permanganate, dissolved in 1050m L water, slowly boil 15m in, cool down, place it in the dark for two weeks, and use it to deal with it. No. 4 glass filter pot filter. Stored in a brown bottle. The treatment of a glass filter pot refers to the glass filter in the same concentration of potassium permanganate solution with the same concentration. 5m in 4.12.2 calibration Called 0.2 5 g at 105 ° C for 1 110 ° C electricity The sodium oxalic acid is dry to constant working reagent in the oven, which is dissolved in 100m L sulfate solution (8 1092). Use the prepared potassium permanganate solution. Drip to the solution pink and keep 30 s. Do a blank test at the same time. The concentration of the standard titration solution of potassium permanganate [C (clicid KMN recognition)], the value is represented by Moore per liter (mol/L), calculated according to the formula (15): · (sound kmno,) m X 1 000 (V, one V 2) m \u0026 amp;#8943; (15) In the formula: — the accurate value of the quality of sodium oxalate, the unit is gram (9); - The value of the volume of potassium permanganate solution, the unit is milliliter (ml); 123] The value of the Moore quality of sodium oxalate, the unit is gram per Moore (g/mol [m (converge na, co,) \u003d 66-9991e 4.13 iron sulfate Nh,) 2Fe (so,) 2] \u003d 0.1 mot/l 4.13.1 Preparation Called 40 g sulfate metal -pressed [(nh4), Fe (so,) z · 6H20], dissolved in it 300m L sulfate solution (20), add 700m i water, shake well. 4.13.2 calibration A amount of 35. 00 m L^-40.00 m L prepared a well-preserved sulfate and a sulfuricate. , Add 25m L oxygen -oxygen, use potassium permanganate standard titration Ivaclc (told kmno,) \u003d 0. 1 mot/L] to the solution pink and keep 30 s. 123] The concentration of the standard titration solution of sulfate sulfate hinges {: nhozfe (so0z]}, the value is represented by Moore per liter (mol/l), according to the formula (16) calculated: In the form: [ . 123] v; - C, C benevolent (nh,), Fe (so,) z] \u003d v cl ..... \u0026 amp;#8943; \u0026 amp;#8943;,., ... · ... \u0026 amp;#8943; \u0026 amp;#8943; (16) The value of the unit is milliliter (ml); The accurate value of the concentration of potassium permanganate standard titration solution, the unit is Moore per liter (mol/L); The accurate value, the unit is milliliter (ml) o GB/T 601-2002 4. 14. 14 sulfuric acid decoration (or sulfate iron) standard titration solution c [c e (so,),] a one 0.1m ol/L, C [2 (nh,) zso, · CE (SO,),] 1 0.1 m ol/L 4.14.1 Preparation Called 40 g sulfuric acid [CE (50. ) 2 · 4H20] {or 67g sulfuric acid decoration [2 (nh,), so, · CE (S04) 2 · 4H20]}, add 30 mL water and 28 mL sulfuric acid, plus 300 mL water, heating Solk, add 650 ml of water and shake well. 4.14.2 calibration Get. 25G in 105, C-110 ℃ Electric oven, dry to constant working reagent reagent reagent sodium oxalic acid, dissolved in 75m L water, add 4 ml sulfate solution (20%) and 10 mi hydrochloric acid, heated to 65 '' C -700C, dripped with a well -equipped sulfuric acid bowl (or persimmon iron) solution to solution is light yellow. Plus 0.10 ml 1,10-Filinlin Yiyia Iron Instructions turn the solution into orange-red, and continue to titrate until the solution is light blue. Do a blank test at the same time. The concentration of the standard titration solution of sulfuric acid decoration (or sulfuric acid) (.), The value is expressed by Moore per liter (mol/L) per liter m x 1 00 0 , calculated by formula (17): \"One (V non--v2: Li (17) In the formula: The accurate value of the quality of s sodium sodium, the unit is gram (9); v, -Sulfate Or the value of the volume of the solution of the sulfuric acid decoration, the unit is milliliter (ml); V, —The value of the volume of the volume of the solution of the solution of the sulfate (or sulfate) of the blank test, the unit is milliliter (ml); ~ The value of the Moore quality of sodium oxalate, the unit is gram per Moore (g/mol) [m (convergence natc, o,) \u003d 66.9 99], 4. 15 the standard titration solution of sodium tetharium tetharium. 123] 4. 15. 1 Preparation According to the prescribed quantity of Table 12, take sodium ethyleine tetrazide, add 10 00m L water, heat dissolvedBut, shake well. Boom 1 2 The concentration of tetramidhalcetate sodium dicerium diacerum is the quality of sodium tetramidate,/g 0.1 40 0.05 20 0.02 8 4.5.2 calibration 4. 15.2. 1 Ahyshamine tetrazide Standard Titor Edta (EDTA) \u003d 0. 1 mol/L], [ C (EDTA) \u003d 0.05 mol/L] According to the specified quantity of Table 13, it is referred to as zinc in a high -temperature furnace at 800 ° C at a high temperature furnace of 士 士 50 ° C. Moisturize, add 2 mL hydrochloric acid solution (20%) to dissolve, add 100 mL water, adjust the solution pH to 7-8 with ammonia aquatic solution (10%), add 10 mL ammonia- chloride buffer solution nail (pH -10) and 5 drops of chromium black T indicating liquid (5 g/L), dripped with the preparation of tetramnium tetrazhacetate diaceromicate solution to solution from purple to pure blue. Do a blank test at the same time. Table 13 The concentration of the standard tither tither tither tetharium titanoholytate [C (EDTA)]/(moT/L) working benchmark reagent reagent quality of zinc oxide two /K 2 /k 0.1 0.05 0.15 [123 ] Ethyramine Tetraysidicate Sodium Diathmal Standard Titanium Concentration [C (EDTA)], the value is represented by Moore per liter (MOO), calculated according to the formula (18) : C (EDTA) m x 1 000 (v: one va) m '.'. \". \u0026 amp;#8943; '·\" ... \u0026 amp;#8943; \u0026 amp;#8943; (18 ) GB/T 601--2002 In the formula: The accurate value of the quality of the zinc oxide, the unit is gram (9); V, —Thyshalamine tetrazide sodium sodium dicerite The volume of the solution, the unit is milliliter (ml); V, —The value of the volume of the sodium solution of the tetharolythalmidine diacerum, the unit is milliliter (ml); The value, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39j. 4.15.2.2 Tetramnium tetramlcetate standard titer [C (EDTA) \u003d 0.02 mol/L] [ 123] Calculating. .4 2 g at 800, C -qi 50 ° C to a constant working reagent reagent zinc oxide, humidity with a small amount of water, add 3m L hydrochloric acid solution (2000) to dissolve, move people 250m L, one In the capacity bottle, dilute to the scale and shake well. Take 35.0 0m L-4 0.00 R Ni, add 70 ml of water, adjust the solution pH to 7-V8 with ammonia aquatic solution (10%), plus 10 ml ammonia one iron chloride buffer armor (pH-10) and 5 drops of inscriptions Black T indicating liquid (5 g/L), dripping with a tied tetharium tetharium tetharotic acid diacerotic acid diacerum to the solution from purple to pure blue. At the same time, do a blank test. The concentration of \"C (EDTA)] of ethyleine tetrazide sodium titron is said to be represented by Moore per liter (MOT/L), calculated according to the formula (19) : CC (EDTA ) m x 1 000 (v: one va) m '.'. \". \u0026 Amp;#8943; '·\" ... \u0026 amp;#8943; \u0026 amp;# 8943; (18) GB/T 601-2002 In the formula: The accurate value of the quality of the zinc oxide, the unit is gram (9); The value of the volume of tetraitic acid di -sodium solution, the unit is milliliter (ml); V, —The value of the volume of the volume of the sodium solution of the sodium acetate in the blank test, the unit is milliliter (ml); The value of the Moore of zinc, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39j. 4.15.2.2 Tetramnium tetharolate standard tituration solution [C (EDTA) \u003d 0.02 mol /L] Calculating. .4 2 g at 800, C 士 50 ° C, burned to constant working reagent zinc oxide, and humiditted with a small amount of water, plus 3m L hydrochloric acid solution ( 2000) Dissolt, migrate 250m L in a capacity bottle, dilute to the scale, shake. Take 35.0 0m L-4 0.00 R Ni, add 70 ml of water, use ammonia aquatic solution (10%) to adjust the solution pH to to to to 7-v8, plus 10 ml ammonia one iron chloride buffer solution (pH-10) and 5 drops of inscription Black T indicating liquid (5 g/L), use the prepared ethyleine tetrazide sodium sodium diharine solution Ding to the solution from purple to pure blue. At the same time, a blank test. The concentration of titanohoetic acid sodium tetrabars \"C (EDTA)], the value is per liter per liter (MOT/L (MOT/L (MOT/L (MOT/L (MOT/L. ) Represents, calculate according to the formula (19) : c (edta) ! X Mu 2V5, 0x '.. (V Yi Biao) m .. \u0026 Amp;# 8943; \u0026 amp;#8943;.. \u0026 Amp;#8943; \u0026 amp;#8943;. · \u0026 Amp;#8943; \u0026 amp;#8943; (19) In the formula: The accurate value of the quality of the zinc oxide, the unit is gram (g); ); VZ — The volume of the volume of ateramnohoethane tethane sodium solution, the unit is milliliter (ml); (ML); The value of the Moore quality of the zinc oxide, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39] 0 level zinc chemical standard titration solution [123 123 ] C (Z N CL,) \u003d 0.1m OL/L 4.16.1 Preparation Called 14 g to grasp zinc, dissolved in 1000m L hydrochloride (1-} -2000), shake uniform. 4.2 calibration Called 1.4 G Place 7D after 7D through magnesium nitrate saturated solution. Among them, add 10 ml ammonia -chlorine hinge buffer solution nails (pH} 10), drip the prepared chloride solution, add 5 drop chrome black T indicator solution (5) at the end of the end, and continue Ding to the solution from blue to purple -red. Do a blank test at the same time. The concentration of zinc chloride standard titration solution \"C (Zncl,)], the value is represented by the Moore per liter (mol/i), calculated by the formula (20): c (znnci,) m X 1 000 (v, one v,) m . 123] In the formula: M the accurate value of the quality of sodium tetrazharotide sodium, the unit is gram (g); VL scratching the volume of the zinc solution, the unit is milliliter (ml) ; VZ — The value of the volume of the zinc solution of a blank test grasping the zinc solution is milliliter (ml); Tittering solution of the standard titration of money (or sulfate) C (m g,) \u003d 0.1 m ol/L, C (mgso,) \u003d 0.1 m ol/l 4.17. 1 21 g grasping magnesium (mgCl, .6h, O) [or 25g magnesium sulfate (mg50, · 7H20)], dissolved in 1000m L hydrochloride (1+2000), put it for 1 month, after 1 month, after 1 month, Filter with glass No. 3. GB/T 601-2002 4. 17.2 calibration Called 1.4 g Sodium tetrazhamine tetrazhamine tetrazhamine after 7D was placed in a hydrloider saturated solution of magnesium nitrate. 10 ml ammonia one -chloride according to the buffer solution armor (P H} 10), drip with the prepared magnesium (or magnesium sulfate) solution, add 5 drops of chromium black T indicator solution at the end of (5 stare at L. ), Continue to tick until the solution changes from blue to purple. Do a blank test at the same time. The concentration of the standard titration solution of magnesium (or magnesium sulfate) (or magnesium sulfate), the value is represented by the Moore per liter (mol/L), calculated according to the formula (21) (V, -vi) m. ‘... ····, · ·. ·, · \u0026 Amp;#8943; (21) In the form: , - The accurate value of the quality of sodium ethyleine tetrazide, the unit is gram (9); V, grabbing The value of the volume of magnesium (or magnesium sulfate) solution, the unit is milliliter (ml); V, — The value of the blank test atmosphere of magnesium (or magnesium sulfate) solution, the unit is milliliter (ml); [[ML); [ 123] The value of the Moore mass of sodium tetrazharium acetate, the unit is gram per Moore (g/mol) [m (edta) \u003d 372.24] o 4. 18 lead. ] C benevolent P B (n O,),] \u003d 0.05m ol/L 4. 18. 1 Preparation Called 17 G nitrate, dissolved at 10 00m L. Nitrate solution (1+20 00) In the middle, shake well. 4.18.2 calibration The amount of 35.00 m L-40.00 m L is equipped with leading nitrite solution, plus 3m L to acetic acid (ice acetic acid) and 5g six methyl amine, plus 70 ML water and 2 drops of dilatephenol orange indicator (2 g/L,), titer \"C (EDTA) \u003d with ethyleine tetrazide Bright yellow. The concentration of the standard titration solution of the leading titration solution {C [PB (NO,)), the value is represented by Moore per liter (mol/L), calculated according to the formula (22): c [pb) (NO,) 2] Two V, C,. '. \u0026 Amp;#8943; \u0026 Amp;#8943;' ...... \u0026 amp;#8943; \u0026 amp;#8943; (22)
123] VL one acetomine tetrazide standard tituration solution value of the volume of tituration solution is milliliter (ml); C, —Thethamine tetrazharium sodium sodium dietary solution is accurate. Mol/L per liter (mol/l); The accurate value of the volume of the V-lead solution, the unit is milliliter (ml), 4. 19. 19 sodium naval titration solution C (n a clm) \u003d 0.1 m ol/l/l Methods 19.1 4.19.1.1 Preparation Called 5.9 G sodium chloride, dissolved in 10 00m L water, and shake well. 4. 19. 1.2 calibration According to the regulations of GB /T 9725-1988. Among them, the amount of sodium scratching sodium scratching is prepared by 35.00m L-40.00M L, plus 40 ml water, 10 ml starch solution (10 g/L), and the electrode of 216 silver electrode, type 217 dual double double The salt bridge saturated sweet mercury electrode is used as a parameter , and the titer [C (AGNO,)) is titled with silver nitric acid. Calculate VA. The concentration of the sodium scratching standard drip solution [C (NACI)], the value is expressed in the Moore per liter (mol/1.), calculated by the formula (23): , , V n C L Iva Seven 1 Little \u003d One-Two 2- v \"............ ..... \u0026 amp;#8943; \u0026 amp;# 8943;. \u0026 Amp;#8943; (23) In the type: VO nitrate standard titer volume value, the unit is milliliter (ml); The accurate value, the unit is the accurate value of the volume of the volume of the Moore per liter (mol/L) V-sodium scratching solution, the unit is milliliter (ml), GB/T 601-2002 4. 19.2 Method 2 Weigh 5.8 4 G ..30G has burned to a constant working reagent atmospheric sodium at a high -temperature furnace of 550 ° C 50 ° C, dissolved in water, moved 1000 people 1000 In the ML capacity bottle, dilute to the scale. The concentration of the standard titration solution of the sodium chemical titration [C (NACI)], the value is represented by the Moore per liter (mol/L) ,,,,, M X 1 000 cllva} ,. u \u003d one-two-diced two-in one-one- v J bamboo '' two '\u0026 amp;#8943; \"\" \"\" ·········· \u0026 amp;#8943; \u0026 amp;#8943; (24) In the form: M-s L's accurate value, unitFor (g); The accurate value of the volume of the V-sodium scratching solution, the unit is milliliter (ml); g/mol) [m (naci) \u003d 5 8.44 2], 4.20 sodium sulfate (or potassium sulfate or sulfate) standard titer solution C (n a SC n) \u003d 0.1 M OL/L, C (KSCN) \u003d 0.1 m OL/L, C (NH, SCN) \u003d 0.1 m ol/L 4.20.1 Preparation Called 8. 2g sodium sulfate (or 9.7 g of pot potassium sulfate or 7.9 g sulfur atmosphere), dissolved in 10 00m L water, shake well. 4.20.2 calibration 4.20.2.1 method 1 Press GB /T 9 725-19888 The regulations are determined. Among them: 0.6 g, dry to constant working reagents in a sulfuric acid dryer silver nitrate, dissolved in 90 mL water, add 10 mL starch solution (10 g/L) and 10 ml nitrate solution (25% ), Use the 216 silver electrode to refer to display electrode, type 217 dual -salt bridge saturated meal mercury electrode as a reference electrode, and use the prepared sodium sulfate (or potassium sulfate or sulfate) solution Drip , and calculate the concentration of VOO sodium sulfate (or potassium sulfate or sulfur sulfuric acid) in GB/T 9725-1988. The value is represented by Moore per liter (MOO), calculated according to the formula (25): one m xv, 1 m0 00., ... 123] In the formula: Two -the accurate value of the quality of silver nitrate, the unit is gram (9); Top — sodium sulfate (or potassium sulfate or sulfuric acid according to) the volume of the solution Value, the unit is milliliter (ml); The value of the Moore quality of M-silver nitrate, the unit is gram per Moore (g/mol) [m (agno,)) \u003d 169.87]. According to the regulations of GB /T 9725-1988. Among them: 35.00m L^ -4 0.00m L nitrate silver standard titration solution Ren C (Agno3) \u003d 0.1 mot/L], add 60 ml water, 10 ml starch solution (10 g/L) and 10 ML nitric acid solution (25 written), with type 216 silver electrode as indicating electrodes, type 217 dual -salt bridge saturated sweet mercury electrode as a reference electrode, and the preparation of sodium sulfenate (or potassium sulfate or sulfur sulfur Pei Sour money) solution dropletDetermine, and calculate VO. The concentration of the standard titration solution of VO. sodium sulfate (or potassium sulfate or sulfuric sulfuric acid) in GB/T 9725-1988. Each liter (mol/l) represents, calculate according to the formula (26): .. \u0026 amp;#8943; \u0026 amp;#8943;, · ... · .......... \u0026 amp #8943; \u0026 amp;#8943; (26) In the type: Volidation of the volume of Vitrine standard titration solution, the unit is milliliter (ml); The accurate value of the concentration of the solution, the unit is Moore per liter (moT/L); VO's accurate value of the volume of the volume of the solution of the solution of the solution of sodium sulfurization (or potassium sulfate or sulfate), the unit is milliliter ), 4.21 silver nitrate standard titration solution C (a g n oo \u003d 0.1 m ol/l gb/t 601-2002 4.21. 1 Preparation Called 17. 5 G nitrate silver, dissolved in 10 00m L water, shake it well. The solution is stored in a brown bottle. 4.21. 2 calibration According to the regulations of GB /T 9725-1988. -600 ° C burned to the constant working benchmark reagent sodium chloride, dissolved in 70 mL water, add 10 mL starch solution (10 g/L.) Electrical electrode, 217 Type double-salt bridge saturated sweet mercury electrode as a reference electrode, dripped with a prepared silver nitrate solution. Press 6.2. 2 in CUB/T 9725-1988 regulations for C. [ . 123] The concentration of silver nitrate standard titration solution [C (AGNO,)], the value is represented by Moore per liter (mol/L), calculated by formula (27): c (AGN Yao) m x 1 000 v .m two ''. '. ..., ... \u0026 amp;#8943; \u0026 amp;#8943; (27, style style Middle: The accurate value of the quality of sodium chloride V. The value of the volume of the silver nitrate solution M-— The value of the Moore mass of sodium chloride 4.22 Sodium nitrite standard titration The solution 4.22. 1 Preparation According to the specified quantity of Table 14, take sodium nitrite, , the unit is gram (9); , the unit is milliliter (ml); , the unit of the unit Moore(g/mol) [m (naci) \u003d 5 8. 442] o Sodium hydroxide and sodium -free carbonate, dissolved in 1 000 mL water, and shake well. Dechat 1 4 The concentration of sodium nitrite standard titration solution [c (n an o,)]/(mol/i) The quality of sodium nitrite,/9 sodium hydroxide Quality/9 Sodium -free Sodium M/9 Xing 0.15 4.22.2 calibration According to the provisions of Table 15, it is said to be dried in an electric oven at 120 ° C to a constant weight The working benchmark reagent has no water to amctoen acid sulfonic acid, plus nitrogen water to dissolve, add 200 ml of water and 20 mL hydrochloric acid, and install the electrode and measuring instrument (see Figure 1) according to the permanent stop dripping method (see Figure 1). About 10 mm in the dropper of the dropper of the sodium nitrite solution that is equipped with are equipped with . Proposal the tip of the dropper, wash the tip of the tip with a small amount of water, wash the liquid and in the human solution, continue to drop slowly, and observe the number of streams to read the number of and pointer. The current increases, and it is no longer the end point of the titration. Pre -use Table 15 The concentration of sodium nitrite standard titration solution EC (n an 02)]/(mol/i) The benchmark reagent reagent water -free alignment The quality of benzene sulfonic acid,/9 The rest of the ammonia water, The concentration of the standard titration solution of sodium nitrite [c (n ano,)], the value is expressed in the Moore per liter (mol/l) per liter (mol/l) , Calculate c (nanoz, one m 瓮 黔 '', two '·············· ; (28) The accurate value of the quality of aminozene sulfonic acid without water, the unit is gram (9); The volume of the volume of sodium nitrite solution, the unit is milliliter (ml); m The value of the Moore quality of aminozene sulfonic acid is not the unit. , GB/T 601 2002 t -. R one -one resistance (its resistance value is similar to the critical damping resistance value of the test flow); Variable resistance, the voltage that adds to the two -electrode L is about young MV) Township R: - resistance (2000 port); E dry battery (L.SV); k switch; [[ 123] g-test stream meter (sensitivity is 10, A factory grid); P platinum electrode FIG. 1 Term Type Installation Demonstration Figure 4.23 Standard acid derivative titration solution c (h ci o ') today 0.lmol/L 4.23. [123 ] 4 23- Preparation Method 1 Taking 8., 1 Holchromes, stirring the bet 5. Essence In ml acetic acid (ice acetic acid)., mix well. Drip 02 ml acetic acid, stir until liquid is uniform. After cooling, dilute to IO0 ml with acetic acid (ice phenolic acid). 4.23.1.2 Method 2: 3) The amount of high atmosphere of 8 7ml is taken, and mixed in the bet 59OML acetic acid (ice acetic acid). Take 01 mij, determine the quality score of the water according to the regulations of g/bt () 66 1 1988, and use the solvent to suck each time. Calculate the average value of the average of the two parallel measurement results [x,). Drinking the calculation amount is drunk and stir well. After cooling, dilute to 10o0rnl with acetic acid (ice acetic acid) and shake well. The amount of crispy (V) in the high -grabbing solution (V), the value is expressed in milliliter (m) L, calculated according to the formula (2) 9 calculate: v \u003d 5 32 o x w l 1 2. 8 ·· · Price · ········· ·· · · · · ··· \u0026 amp;#8943; \u0026 amp;#8943; (29) In the form: The quality score of the water in the high atmosphere solution is represented by%. 4.23.2 calibration Called 0.7 59 59 ℃ 101 ℃ electric oven to dry to constant working benchmark reagent reagent reagent. In the bottle, add 50 ml acetic acid (ice acetic acid), which is warmly dissolved. Add 3 drops of crystalline purple indicator (59/i), and use the preparation of the preparation of high chloride 3) This method controls the quality score of the water in the standard titration solution of high acidic titration solutions. .O5%. GB/T 601-2002 Dripment until the solution changes from purple to blue (slightly purple). Before use, calibration. The concentration of the standard titration solution at the standard at the calibration temperature [C (HC (O,)], the value is represented by Moore per liter (mol/L), according to the formula (30) calculated: m X 1 0 0 0 ck naiv,少\u003d 一VM ......................·\u0026amp;#8943; \u0026amp;#8943;(30)[123 ] Formula: Must be accurate for the quality of m -hydrogen acid hydrogenateReally values, the unit is gram (9); V high -grabbing the volume of the volume of the acid solution, the unit is milliliter (ml); G/Mol Ren M (KHC H, O,) \u003d 204.22], 4.23.3 correction method The temperature when using the standard titration solution of high -grasping acid should be the same as the temperature time time; if The temperature should be different, and the concentration of the standard for high chloroine should be titted to the value of the concentration of the liquid to the concentration of the concentration at the use of the temperature. The value is represented by Moore per liter (mol/L), calculated according to the formula (31): C (H C10,) 1+0.0011 (t not 7t). '\"' 'Two' ......... (3 1) In the formula: C — the accurate value of the concentration of the standard titration solution at the standard acid standard titration solution at the calibration temperature. /L); L — The value of the temperature of the tituration solution at a high acid standard titration solution at the time of use, the unit is the degree of degree Celsius (℃), T -calibrate the temperature of the temperature of the standard titration solution, the unit is the degree of degrees Celsius ( ° C); 0.001 1-The standard titration solution of high acid grabbing is the volume expansion coefficient every time I change. 4.24 Atmospheric Potassium One Drunk Standard Titanium C (KO H) 2. 0.1 M OL /L 19333334.24.1 Preparation Called 8 G potassium hydroxide, placed in polyethylene container, add a small amount of water (about 5m L.) To dissolve, diluted with ethanol (95%) to 10 00m L. Concerned 24 h. Use the plastic tube siphon upper layer of liquid to another polyethylene container. 4.24.2 calibration Called 0.7 5G in 105'c^ 110 ° C as an electric oven to constant The heavy work benchmark reagent reagent dental hydrogen acid potassium is dissolved in 50m L in water without carbon dioxide, add 2 dropphenolicon indicator (10 g/L), and drip it with a prepared potassium hydroxide one ethanol solution to the solution to solution Pink, At the same time, do a blank test at the same time. Calculation before use. Potassium hydroxide concentration of the standard titer of the standard titer [C (KOH)], the value is expressed by Moore per liter [mol/l), press Formula (32) calculation: C (koh) m x 1 000 (V2) m formula: M-benzide hydrogenate quality of hydrogen acid The accurate value, the unit is gram (b)+ v, -The value of the volume of the volume of potassium hydroxide, one drunk solution, the unit is milliliter [ml); V2 -blank test The values \u200b\u200bof the volume of potassium hydroxide one ethanol solution, the unit is milliliter (ml); The value of the Moore mass of m -hydrogenate hydrogenate in M, the unit is gram per Moore (g/mol [ M (khcsh, o,) \u003d 204. (32) 221. GB/T 601-2002 Appendix A (specified appendix) Standard at different temperatures Correct values \u200b\u200bof the volume of the titration solution The volume of the volume of the standard titration solution at different temperatures is calculated according to Table A. 1. Table a. 1 unit is milliliter per liter (m L/ i), [123 123 ] Sulfate solution sulfate solution · (told HMSO,)} '(HZSO,) _ Temperature/℃ Water and 0.05 mol/l Pymatic solution 0. 1 mol/ L; and _ 一 0.2 mol/ L Various water solution one liquid 1 C (HCL) \u003d 0. 5 mol/l hydrochloride solution c (hci) \u003d l mol/i 0. 5 mol/L, Sodium hydroxide solution c (naOh) - 0. 5 mol/i. 1M OT/i, Sodium hydroxide solution c (naOH) \u003d 1 mo l/l carbonated carbonated carbonate Sodium solution · (He Na, Co,) \u003d 1 mol/L Potassium hydroxide 1 Drunk solution c (koh) \u003d 0. 1 mot/ I q heart 0 j nj port ︺ ︺ dagger D bow ﹄﹄ 叼 Ri Dou 1 10 1.38 +1.38 + 1.36 [123 [123 ]+1.33 +1.29 +1.23 10 1.17 10 1.10 +0.99 +0.88 +0.77 +0. 64 +0.50 +0. 34 10 0.18 0.0 0 1 0.18 1 0.38 1 0.58 1 0.80 1 1.03 1 1.26 1 1.51 1 1. 76 1 2.01 1 2.30 1 2. 58 1 2. 86 1 3.04 1. 3. 1. 47 1 3. 78 1 4. 10 + 1.7 + 1.7 + 1. 6 + 1.6 + 1.5 + 1.5 +1.4 +1.3 +1. 1 +1.0 +0.9 +0.7 +0.6 +d.4 +0 2 0.00 one 0.2 one 0.4 1 0.6 1 0.9 1 1 1. 4 1 1. 7 1 2.0 [0 1.0 [0 [0 1.0 [0 [0 [10 1.0 [0 [0 [10 1.0 [0 [0 1 2.0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 1 2.0 [0 123] One 23 1 2.5 1 2.7 1 3.0 1 3.7 + 1.9 + 1.9 + 1. 8 + 1.8 + 1. 7 Upper 1.6 t 1. 5 Bow ︺ + 10.8 10 9.6 + 1. + 1 . + 1. +. +0.8 + 0.6 +0. 4 + 0 2 + 2 +2, 10 10 2. +2 Up 1. 1 1. · 1 + 1. 10 1. 10 1. 1 0.2 [123 ]一0.4 一0.? 一0.9 曰叫 -4. 一1 1 一1.4 一1.7 一2. 0[ 123] One 2 3 1 2.5 1 2.7 1 3.0 1 3.3 1 4.0 1 4.3 + 0.6 +0. 4 t 0 2 0. 0 1 0.2 1 0.5 1 0.7 1 1. 1.0 1 2 1 1.4 1 1. 7 1 2. 0 1 2.3 1 2. 6 1 2.9 1 3.2 [123 [123 ] One 3.5 1 3 8 1 1.4 1 2. 4
10,000 2.2 +2.2 +2.1 + 2 0 +1. 8 + 1. 7 + 1.5 + 1.3 + 1.1 +0. 9 10 0.7 [ 123]+ 0.5 one 0.2 0. 00 1 0.2 1 0 5 1 0 8 1 1.3 1 1.3 One 1.5 1 1.8 one 2.1 1 2.4 1 2.8 1 1 3.4 1 3.7 1.1 Dou 3.6 1 3 4 1 3.2 +3 0 +2.7 10 +2.3 +2.0 +1 8 + 1.6 10 1.3 4-1.1 one 0.8 10 0.6 10 0.3 0.00 1 0.6 1 0.9 [ 123] One 1.2 1 1. 5 1 1.8 1 2.1 1 2.4 1 2.8 1 3.5 1 3.9 One 4.2 + 3.3 Before 3 2 one 3.0 +2.8 +2.6 + 2 4 +2. 2 + 2.0 [ 123]+ 1. 8 + 1.5 + 1.3 + 1. 1 + (). 8 1 0.6 One 0.3 0. 0 One 0.3 1 0.6 1 0.9 1 1.2 1 5 1 1.8 1 1 2, 4 one 2.8 1 3 1 10 8. + 7. Ning 6. 10 5. -4. 1 3. 10 2. + l. 0. 0 one I. 1 2.2 1 3.3 1 4 One Han 1 6. 1 7_ -4 5 1 8, 5 1 9.6 1 10. 6 1 11. 6 1 12. 6 1 13. 7 1 14.8 9-10U1213N-151616171819-20 Muscle condition 23 August 1. 25 Weng 27 Shao is -4. 5.3 -167 0, Gate 30 ship 35 intestines Note1: The value of this table is measured at 20 ° C as the standard temperature. Note 2: The value of the \"Ten\" and \"One\" in the table is 20 C as the boundary.The correction value of the room temperature below 20 ° C is \"+\", and the supplementary values of 20 ° C are all . Note 3: The usage of this table is as 1L of sulfate (AL H2S04)MOL/L] When converted from 25 ° C to 20 ° C, the volume replenishment value is one, 5m L, The volume of 40.00 m 1 when it is converted to 20 ° C is: v, \u003d 40. 001 1 710. -05 0 x 40.0 0 \u003d 3 9.9 4 (-1,) 13
GB/T601, GB/T602 National Standard for the People's Republic of China GB/T 601-2002 instead of GB/T 601-1988 Chemical reagent standard titration solution Preparation CH EM IC Al R EA GE NT- Preparations of Standard Volumetric Solutions 2002-10-15 Release 2003-04-01 Implement National People's Republic National Quality Supervision Inspection and Quarantine General Administration Published 121 GB/T 601-2002 n scoop This standard instead of GB/T 601-1988 \"Preparation of Standard Solutions for Chemical Reagents Titration Analysis (Capacity Analysis)\" Essence The main changes are as follows compared with GB/T 601-1988: The standard name is modified to \"Preparation of Chemical Reaging Standard Titanium,; -Added to the speed of titration ( This version of 3.3); -The accuracy of the weighing (1988 version of 4.1.2.1,4.2.2.2.2.2.1, 4.6.2.1, 4.2.1, 4.12.2.1, 4.1 4 . 2.1, 4.15.2.1, 4.20.2. 1, 4.2 1.2.1, 4.22.2. 1, 4.23.2.2. (1988 version of 3.6; 3.6 of this version); - The \"comparison\" method (1988 version of 3.6,3.7, 4.1.3, 4.2.3, 4.3.3, 4.6.3, 4.9.3,,,,,,,,,,,,,,,,, 4.12.3,4.14.3, 4. 20.3, 4.21.3); - \"Expansion uncertainty of the average extension of the standard titration solution concentration in this standard should not be greater than 0.2 ，可根据需要 报出， 其计算参见附录B,'(本版的3.7、 附录B); — 增加了用二级纯度标准物质或定值标推物质代替工作基准试剂进行Provisions for calibration or direct preparation (3.8 in this version); increased the requirements for storage containers (3. 11 in this version); - Effective bit (1988 edition of 4.1.2.2,4.2.2.2.2, 4.3.2.2, 4.6.2.2, 4. 9. 2. 2, 4.12.2. 2, 4.14.2 .2, 4.20.2 .2, 4.2 1.2. 2, 4.22.2. 23.23.2. 2; This edition 4.1.2, 4.2.2,4.3.2, 4.6.2, 4.9.2.1, 4.1 2.2, 4.2,4.20.2.1, 4.21.2, 4.22.2, 4.23.2) ; -The preparation of the standard titration solution of potassium chromate standard titration solution, potassium iodine standard titration solution and sodium scratching solution adds method 2 (123] working benchmark reagent directly () 4.5.2 of this version of this version 4.5.2 , 4.10.2,4.19.2); - iconic standard titration solution and sodium sulfate standard titration solution add method two (4.9. 2. 2, 4.20 .2. 2); [ 123] - Modified the basic unit of the standard titration solution of sodium sulfate sulfate and the basic unit of the Australian standard titration solution (1988 version of 4.6.1, 4.7; 4.6.1, 4.7); - Modify The calibration method of the standard titration solution of the zinc -based zinc, the standard tituration solution and sodium sulfate standard tituration solution (1988 annual version of 4.16 A.17 A.20; 4.16, 4.17, 4.20 in this version); —The formulation of high -scratchy acid standard titration solution adds method 2 (4.23 of this version); - \"Potassium hydroxide and one ethanol standard titration solution (', 4.24 in this version); —And appendix A adds a supplementary value of sodium carbonate standard titration solution and potassium hydroxide one ethanol standard (1988 edition Appendix A; Appendix A in this edition). Appendix A of this standard is specified as specification Sexual Appendix and Appendix B are data appendix. This standard is proposed by the former National Petroleum and Chemistry Industry Bureau. The Institute of Chemistry Reagents, Chengdu Chemical Reaging Factory. This standard is mainly drafted: Hao Yulin, Liu Dongni, Wang Sufang, Qiang Jinglin, Guan Ruibao, Chen Junyu, Guo Shanpei. This standard was first released in 1965. In 1977 For the first revision, the second revision in 1988. GB/T 601-002 Chemical reagent Standard Titanium Preparation Scope This standard specifies chemical reagent standard titration The preparation and calibration method of the solution. This standard is applicable to the standard titration solution that prepares accurate concentrations to determine the purity of chemical reagentsDegree and impurities can also be selected for in other industries. 2 specification reference file The terms in the following standards have become the terms of this standard through the reference of this standard. For the reference documents of the date of note, all the subsequent modification forms (excluding the content of errors) or the revised version are not applicable to this standard. Use the latest version of these files. The latest version of the reference file that does not note the date is applicable to this standard. GB /T 6 03-2002 Preparation of Preparation and Products used in the test method of chemical reagent test methods GB /T 6 06-1988 chemical reagent water measurement general method (Carl Fei Rate) (EQVI SO6 353-1 : 1982) GB /T 6682-1992 Analysis Laboratory Water Specification and Test Method (Negiso 3696: 1987) GB /T 9 725-1988 Chemical Reagent Power Display Fittings (EQVI SO 6353-1: 1982) 3 General regulations 3.1 In addition to other regulations, the purity of the reagents used should be more than analyzed. Experimental water should comply with the specifications of third-level water in GB/T 6682-1992. 3.2 The concentration of the standard titration solution prepared by this standard is except for high atmosphere acids, all refer to the concentration at 20 ° C. When the standard titration solution calibrates, direct , if the temperature is different, the temperature should be corrected according to Appendix A. Standard titration solution calibration, direct preparation and use analysis Tian flat, anvil code, titer tube, capacity bottle, single -standard line straw, etc. must be regularly corrected. 3.3 In the calibration and use of standard titration solutions, the titration speed should generally be maintained at 6 ml./min-8 ml./min.:123. The value of the benchmark reagent reagent reagent reagent is less than equal. When .5 g, according to the precision. .0 1m g of weighing; when the value is greater than 0.5 g, is accurate. .1 mg weighing. 3.5 The concentration value of the preparation of standard titration solution should be within 5%of the scholars with a specified concentration value. 3.6 When the concentration of the standard titration solution of the standard titration solution, two people must perform experiments and do four parallel parallel each. The comparison of the poor values \u200b\u200bper person is not greater than the critical critical difference [C, C, C, C, The relative value of RSS (4) \"is 2'0.15%, and the relative value of the poor measurement results of the eight parallel determinations of the two must not be greater than the relative value of duplicate critical difference [C.RS5 (8)\". 18%. Take the average value of the two -person eight parallel measurement results as the measurement result. In operational processThe five valid numbers are retained, and the concentration value reports the results to take four effective numbers. 3.7 Expansion uncertainty of the standard titration solution concentration in this standard generally should not be greater. The intestine can be reported as needed. 3.8 The concentration of the standard titration solution of the standard reagent of this standard uses the standard reagent reagent. When the accuracy of the standard titration solution concentration is higher 1) Extremely poor relative value is the ratio of the polar difference to the average value of the concentration of the result, which is represented by \"%\". 2) The definition of duplicate critical polarity [C, R (n)] is seen. When the ratio of \"%\" is expressed in \"123] GB/T 601-2002 , you can use a secondary purity standard material or fixed value standard substance to calibrate or prepare directly, and calculate When the concentration of the quasi -drop solution, the concentration of the standard titration solution is less than equal to the standard titer of the standard titration solution in the calculation formula of the quasi -drop solution. When .02m OT/L, the standard titration solution with high concentrations should be boiled with high concentration and cold before leaving. 3. Except for other regulations, the standard titration solution is preserved at room temperature (150C-250C) generally does not exceed two months. When the solution appears turbidity, precipitation, color changes, etc. 3. The container that stored standard titration solutions should not be raised with the solution, and the thinnest part of the wall thickness should not be less than less. 5 mm 3. The solution used in the 12 standards is represented by (%) the mass scores (%), and only the (%) in the (95%) of the ethanol (95%) are the volume score 4 standard titration solution. 123] 4. 1 Clear Standard Titanus solution of sodium nitrogen Preparation Called 110 g sodium hydroxide, dissolved in 100 mL carbon dioxide water, shake it, injection of polyethylene In the container, it is closed to the solution . According to the provisions of Table 1, the upper layer liquid is taken with the amount of plastic tube, diluted with water -free water to 1 000mi, and shake it well. Table 1 The concentration of the standard titration solution of sodium hydroxide [C (NAOH)] Eight mol/L) Volume V/ML 1 54 0.5 27 [123 ] 0.1 5.4 4.1.2 calibration According to the provisions of Table 2, it is said to be removed from the benchmark reagent of hydrogen acid hydrogen acid hydrogen acid in 105`C --110 ° C to the constant weight. 123] Carbon oxide water dissolves, add 2 dropphenol fingersDemonstration liquid (10 g/IJ, dripped with the prepaid sodium hydroxide solution until the solution is pink, and keeps 30 s. At the same time, take a blank test. Table 2 Standard Titor Drit in Sodium hydroxide concentration [c (naOH)]/(mol/l.) The base reagent The quality of potassium hydrogen acid,/9 The volume of the volume of carbon dioxide [ 123] 1 7.5 80 0.5 3.6 80 0.1 0.75 50 The concentration of the standard titration solution of sodium hydroxide [C (NAOH)], the value is represented by Moore per liter (MOT/ i), pressed (prescribing formula (prescribed) 1) Calculation: c (naOH) m x 1 000 (V, one vs) m In the formula: M -— the accurate value of the quality of m -hydrogenate hydrogenate of m -benzene , The unit is the value of the volume of the volume of the unit of V -sodium hydroxide solution, the unit is milliliter (ml); ml); M the value of the Moore quality of Potassium hydrogenate in m, the unit is G/Mol (G/MOL) lm (khceh, 0,) \u003d 204.22] o 4.2 Standard Titor hydrochloride solution 4.2.1 Preparation Take the hydrochloric acid according to the prescribed in Table 3, note 10 00m L in water, shake it. Concentration [C (HCI)]/(mol/i) volume VML. 1 0.5 9o { 0. 1 {. 4.2.2 calibration According to the provisions of Table 4, it is said that the working benchmark reagent no water carbonate was burned to the constant heavy weight in the 270'c-300'C high-temperature furnace, which was dissolved in 50m L. In the water, add 10 drops of Australphenol green, a custard red indicator, and drip to use the prepared hydrochloric acid solution until the solution changes from green to dark red, boil 2 min, and then tuck to the solution and then dark red. At the same time, do a blank test. Table 4 The concentration of \"C (HCI)]/(m (, L, 'L)) working benchmark reagentless sodium carbonate of hydrochloric acid hydrochloric acid. 1 1.9 0. 5 0.95 0.1 0.2 Concentration kernel C (HCI) of standard titrative solution hydrochloride]. A '(HCI) M X 1 000 (VL one VZ) m In the formula: M-一 一)))))))))))))) The accurate value of the quality of sodium sodium carbonate, the unit is gram (g); v1 -The value of the volume of the hydrochloric acid solution, the unit is milliliter (ml-); V: the value of the volume of the hydrochloric acid solution of the hydrochloric acid solution, the unit is milliliter The value of the quality, the unit is the standard titration solution of Smore (9/ 4.3 Sulfuric acid 4.3. 1 Preparation mollm (harm nayco,) \u003d 52.9 941 Aspen 5 sulfuric acid according to the specified table 5 , Slowly note 1000 ml of water, cool down, shake well. Table 5 The concentration of the standard titration solution of sulfuric acid [合 hzso,)]/(m o l/l) {volume v/ml of sulfuric acid ] 30 [巧 12 I I 1 1 0.5 0.1 4.3.2 calibration According to the provisions of Table 6 Take 2700C^ 300 \u0026 quot; C High -temperature furnace burned to constant working reagent reagent reagentless sodium carbonate, dissolved in 50m L. water, add 10 drops of Australian phenol green, a campaign liquid, prepare preparation for preparation The good sulfate solution is dripped to the solution from green to dark red, boiled 2 min, and then titer to the solution and then dark red. Do a blank test at the same time. Table 6 Sulfuric acid standard, solubble. Concentration [· [sound Hzsoj]/(mol/IJ working reference reagent reagent no water carbonate quality ./ Only 0.5 0.1 01.95 GB/T 601-2002 Standard Titanic solution sulfuric acid. Concentration benevolence (borrow hzso,) 1, value is represented by Moore per liter (mol/l), calculated according to formula (3): · (told HLS04, m x 1 000 (V, a V v, one V ,) M \u0026 amp;#8943; \u0026 amp;#8943; (3) In the formula: - The accurate value of the quality of sodium -free sodium carbonate, the unit is gram (g); - The volume of the sulfuric acid solution, the unit is milliliter (ml); - The value of the volume of the sulfate solution of the blank test, the unit is milliliter (ml); The value of quality, the unit is G/Mol [m (sound na, co,) \u003d 5 2.994], 4-4 sodium carbonate standard titer solution 4.4. 1 Preparation According to the provisions of Table 7, remove sodium -free sodium carbonate, dissolved in 1 000 ml, and shake it well. Wrap 7 The concentration of sodium carbonate standard titration solution [C (C (meteing nayco,)]/(m o l/l) The mass of sodium -free sodium carbonate m/q 4.4.2 calibration Introduction 35. 00 m L, -40.00 m L prepared sodium carbonate solutions, plus water of water with a volume of water, plus 10 drops of citrhenol green one red indicator liquid, and use the corresponding concentration of the corresponding concentration of hydrochloric acid specified in Table 8 The standard titration solution is titled until the solution changes from green to dark red, boiled for 2 min, after cooling , continues to titer until the solution is dark red. Dechat 8 The concentration of the standard titration solution of sodium carbonate [(合 na7c0,)]/(mol/l) The volume V/ml The concentration of the standard titration solution of the hydrochloric acid hydrochloric acid 123] [C (HCI)] eight mol/1) 1 50 1 0.1 20 0.1 The concentration of sodium carbonate standard titration solution [· (told Natco) \", the value is per liter (mol per mol (mol) /L) Means, calculate according to the formula (4): · (told na, co,)- v ·· \u0026 amp;#8943; \u0026 amp;#8943; (4) : V, -The volume of the volume of standard titration solution of hydrochloric acid, the unit is milliliter (ml); C, hydrochloride standards standard The accurate value of the concentration of the ticking solution is the accurate value of the volume of the volume of the sodium carbonate solution per liter (mol/L); · (including K 2CRZ0 7, 1 0.'mol/L 4.5. 1 method 1 4.5. 1. 1 Preparation Called 5g of potassium chromate, dissolved at 10 00m L, dissolved at 10 00m L, In the water, shake well. 4.5. 1.2 calibration The amount of 35.00 m L-40.00 m L is equipped with a well-preserved potassium chromate solution, placed in the iodine bottle, add 2g of potassium iodide and 20m L sulfate soluble GB/T 601- 2002 liquid (20%), shake it, place 10 min in the dark. Add 150 mL water (15`c-20} c), use sodium sulfate sulfate standard titer solution Ren C (NA2S201) \u003d 0.1 mol/L \"titer, add 2 ml starch indicator solution (10 g/L) at the end of the end, and continue to digue until the solution changes from blue to bright green. At the same time, make V. TestExamination The concentration of the standard titration solution of potassium chromate: (sound K, CR20,)], the value is represented by Moore per liter (mol/L), calculated according to the formula (5) ) _ (V, one v) ci v . \"'· One' ··, .................. V -sodium sulfate sulfate standard tither the volume value of the volume, the unit is milliliter (ml); V one -one blank test of the volume of the volume of sodium sulfate sulfate, the unit is milliliter (ml) ; C, the accurate value of the concentration of sodium sulfate sulfate standard titration solution, the unit is Moore per liter (mol/L); The accurate value of the volume of the potassium chromate solution, the unit is milliliter (the unit is milliliter ( ml), 4.5.2 method 2 Called 4.9 0 G 士 ..20G has been dried to a constant working reagent potassium chromium in the electric oven at 120 ° C 2 ° C. Yu Shui, In the 1000 ml capacity bottle, dilute to the scale. The concentration of the standard titration solution of potassium chromate is [· (including K2Cr, 0,)], and the value is per liter of Moore (mol/ mol/ L) Represents, calculate according to the formula (6): one · (sound kz cr2 o,) m x 000 1 claw 4 [123 ] In the formula: The accurate value of the quality of m -chromicopalate, the unit is gram (g); V accurate value of the volume of the potassate solution, the unit is milliliter (ml); [123 ] The value of the Moore quality of the potassium chromate, 4.6 Sodium sulfate sodium sulfate standard titration solution C (na, easy 03) 2. 0.1 m 01/i 4.6.1 with overhead [123 ] The unit is K/MoB [m (K2Cr, O,) 1 49.0311. Called 26 G sodium sulfate (NATSZ O, · 5H20) (or 16g sodium -free sulfate sulfate) , Add 0.2 g sodium without water carbonate, dissolve in 1 000 ml of water, slowly boil for 10 min, cool. Filter after two weeks. 4.6.2 calibration Called 0.18 g in. 120 ° C, 2 ° C, dry to constant work benchmark reagent, potassium chromate, placed in iodine bottle, dissolved in 25m 1_ water, Add 2g of potassium iodide and 20 mL sulfate solution (20%), shake well well , 10 min are placed in the dark.ML starch indicator (10 g/L), continue to tuck to the solution from blue to bright green . Do a blank test at the same time. The concentration of sodium sulfate standard titration solution [C (NA2S, O,)], the value is represented by Moore per liter (mot/L), calculated by formula (7): C (na, s, O,) RRCX 1 000 (V, one V,) m . two. . \u0026 amp;#8943;. two. two. .. ... ·· \u0026 amp;#8943; \u0026 amp;#8943; (7) In the form: The accurate value of the quality of the two -chromicopa acid, the unit is gram (g); v , The volume of sodium sulfate solution, the unit is milliliter (ml); V, —The value of the volume of sodium sulfate solution of the blank test, the unit is milliliter (ml); m -chromium heavy chromium The value of the Moore quality of potassium acid, the unit is K/Mol (g/mol) [m (talked K, CR, O,) \u003d 4 9.0 31], GB/T 601-2002 Australian standard Ding Ding solution [(told br,) one. · 1MO LT 1 Preparation Called 3g of potassium Australian acid and 25 G A vascularized potassium, dissolved in 1000 mi, water, shake well. 2 calibration Obtain 35. 00 ml, -40.00 ml prepared Australian solution, placed in the iodine quantity bottle, 47 price 47 (20%), shake, shake it in the dark, in the dark, in the dark, in the dark Surveillance 5 min. Add 150 mL water (15 ° C, 20 \u0026 quot; C) Add 2 G iodide and 5 ml of hydrochloride , use sodium sulfate standard titration solution [c (na2sioa) \u003d 0.1 mol/1. 1. ] Ding Ding, add 2 ml of starch indicator (10 g/L) at the end of the end, and continue to drop until the solution blue disappears. Do a blank test at the same time. , the concentration of the standard titration solution [· (Costing BRZ)], the value is expressed by the Moore per liter (mol/i.), Calculated by the formula (8) V, one vz) c, v formula: V, one -one sodium sodium sulfate, the volume of the standard titration solution, the unit is milliliter (ml '); v: one The value of the volume of the standard titration solution of sodium sulfate sulfate in the blank test is the accurate value of the concentration of the unit of sulfur sulfate in the standard of sodium sulfate. 1.); The accurate value of the volume of the A -Australian solution, the unit is milliliter (ml), 4.8 Potassium Australian Titanium Discoving Solid · (including K BRO, 1 0.'mol/L 4.8. 1 Preparation Called 3g of potassium Australium, dissolved in 10 00m L water, Shake well. 4.8. 2 calibration A amount of 35.00 m L-40.00 M L prepared the potassium Australization solution, placed in the iodine quantity bottle, add 2g of potassium iodide and 5m L hydrochloric acid solution (20%), shake well, place 5 min in the dark. Add 150 ml of water (15 ° C and 20 \u0026 quot; c), and use sodium sulfate sulfate standard titration solution kernel C (na, s20,) .. 1 MOT/L] Tit Ding, add 2 mL starch indicator solution (10 g/L) at the end of the end, and continue to titer to the blue of the solution. At the same time, do a blank test. Ren '(Guangdong KBRO,)], v The value is represented by Moore per liter (MOT/L), calculated by formula (9): · (sound kbroo_ (v, one v) c, v ··· \u0026 amp;#8943; \u0026 amp;#8943; (9 \" In the form: V, sulfur sulfate standard titer volume value, the unit is milliliter ( ml); V -one blank test sodium sulfate sulfate standard tither volume value, the unit is milliliter (ml); C, the accurate value of the concentration of the standard titration solution of sodium sodium sulfate, The unit is Moore per liter (mol/L); The accurate value of the volume of V-potassium solution solution, the unit is milliliter (ml), 4.9 iodine standard titration solution · (Covenant 1 2,, 1 2, (Cost 1 2, (Cost 1 2, 1 2, One 0.'mol/L 4.9.1 Preparation It is called 13 G iodine and 35 G iodide, dissolved in 100 mL water, diluted to 1 000 ml, shaken well, stored in a brown bottle. [123 123. ] 4.9.2 4.9.2 calibration. The reagent dioxide is placed in the iodine bottle, adding 6m L standard titration solution \"C (naOH) \u003d 1m ol/L to solverse, add 50m L water, add 2 dropphenol 酞 酞 试 试 T liquid (10g /L), use sulfuric acid standard titer solution: · (H2S0,) 1mo L /L] Titrate to the solution colorless, force. /L), dripped with the prepared iodine solution until the solution was light blue.Do a blank test at the same time. 碘标准滴定溶液的浓度〔·(合12)l，数值以摩尔每升(M01/1-)表示，按式(10)计算: m X 1 000 (V, One vz) m . .. \u0026 amp;#8943; \u0026 amp;#8943;, two. ... \u0026 amp;#8943; \u0026 amp;#8943;,. \u0026 amp;#8943; \u0026 amp;#8943; (10) In the: accurate value of the quality of tritenuel dioxide, the unit is gram ( 9); V, the volume of the iodine solution, the unit is milliliter (ml); V2 — the value of the volume of the iodine solution of the blank test, the unit is milliliter (ml); m-. Two 0LYJ Mo. Essence Essence ,one. Essence Momo i7G/ mol) [m (buckle 6yo,) 1 49.460]. 4.9.2.2 Method 2 A amount of 35.00m L-40.00 m L prefined iodine solution 150m L water (15'c^ -20c), use sulfur sulfur sodium sulfate standard titer [c (na, s, 0,) to dick, add 2 mL starch indicator solution at the end of the end (10 g/i), continue to drop until the blue of the solution disappears. At the same time, the iodine test consumed by water at the same time: take 250m L water (150c-200c), add. .05m I_-0.20 m L, prepared the iodine solution liquid and 2ml starch indicator liquid (10 g/L), use sodium sulfate to sulfate standard titration solution [c (na \u0026 quot; sz03) \u003d 0.1 mol/i] titration To the solution blue , the color disappears. The concentration of iodine standard titration solution [. (IZ)], the value is represented by Moore per liter (mol/l), calculated according to the formula (1 \" (v; one recognition) c, v3 one v, .,. , Two .. \u0026 amp;#8943; \u0026 amp;#8943;, \u0026 amp;#8943; (11) 1-2 Type: V, sodium sulfate standard tituration solution volume of the volume of the volume Value, the unit is milliliter (ml); V, —The value of the volume of the standard titration solution of sodium sulfate sodium sulfate, the unit is milliliter (ml); The accurate value, the unit is Moore per liter (mol/L); V iodine solution's volume accurate value, the unit is milliliter (mi,); V, —— iodine solution of the plus people in the blank experiment in the blank experiment The accurate value of the volume,The unit is milliliter (LNL), 4.10 Potassium iodate standard titration solution 4.10.1 method 1 4.10-1 door formulation Called potassium iodate specified in Table 9, dissolved in 10 00m L water, shake well. Table 9 Potassium iodate standard titration. The quality of liquid [· (sound KIO,)]/(mol/L) potassium iodine,/9 0.3 11 0.1 3.6 4.10.1.2 calibration According to the provisions of Table 10, take it, take it, take it, take it, take it, take the provisions of Table 10, take it. The preparation of potassium iodine solution, water, and potassium iodide is placed in the iodine quantity bottle, add 5m L hydrochloric acid solution (20%), shake evenly, and place 5 min in the dark. Add 150 m1_ water (15'c ^-2 0'C), use sodium sulfur sulfate standard titration solution GB/T 601-2002 [c (na, s, 03) two. 1 mol/l] Titan, add 2 ml starch indicator solution (10 g/L) at the end of the end, and continue to drop until the solution blue disappears. Do a blank test at the same time. Table 10 Potassium iodine standard titration solution [· (KIO,) 7/(mol/L) The volume of V/ml of water about potassium iodine solution V/ml of potassium iodate solution, the mass of potassium iodide MFG [123 ] 0.3 11.00^-13.00 20 3 0.1 35.00^-40.00} 1 Potassium iodine standard titer concentration kernels (green KIO) \", the value is expressed by Moore per liter (Moo,), it is expressed, Calculate (12) calculate: · (KIO,) (V, One V2) c, v . \u0026 amp;#8943;. \u0026 amp;#8943;,. .. \u0026 amp;#8943;. two. Essence Essence ···. Two (12) type: V, —The value of the volume of sodium sulfate standard titration solution, the unit is milliliter (ml); V, —— White test sodium sulfate sulfate standard titration solution The volume value, the unit is milliliter (ml); . — The accurate value of the concentration of sodium sulfate standard titration solution is the accurate value of the volume of the unit of Moore per liter (mol/i); -2 Method 2 It is called the potassium iodine iodine that has been dried to the constant weight reagent in Table 11 in Table 11 in Table 11. Dilute to the scale in the capacity bottle. Table 1 1 Potassium iodine standard, fixed, liquid concentration kernel C (harmonious KK \u0026 GT;) 7 eight m al/L)The quality of potassium iodine in the working benchmark/9 0.3 10.70 士 0.50 0.1.1.57 士 0. 15 The concentration of potassium iodine standard titration solution [. (Li KIO) port, the value is represented by Moore per liter (mol/L), calculated according to the formula (13): n · (green ki0) ...... ... \u0026 amp #8943; \u0026 amp;#8943; (13) Make up ﹄﹄ \"3 m x 1 000 vm type: The quality of m -potassium potassium iodate The accurate value, the unit is gram (9); The accurate value of the volume of the pot potassium iodine solution, the unit of the unit of ml (ml) o Moore mass of m -iodate, 4.11 Standard Titoric Solution The unit is G/Mol (G/MOL) LM (including KIO,) \u003d · 667], · (True H2C2O N, One. 'Mol/L 4.11. 1 Preparation Called 6. 49 4.11.2 calibration A amount of 35.0 C oxalic acid (H2C20, · 2H20), dissolved in 1 000 ml water, shake well. ML^-40.00 mL prepares a good oxalic acid solution, add 100 mL sulfate solution (8+92), use potassium permanganate standard drop , liquid [(sound kmn0,) \u003d 0.1 m o light L] Ding Ding, heated to about 650C at the end of the end, continue to titer to pink solution, and keep 30 s. At the same time, a blank test. ] B . The value is represented by Moore per liter (mol/i), and calculated by the formula (14): GB/T 601-2002 · (Township H2C0,) _ (V, One V. ) c v .............................................................................................................................................................................................................................................. \u0026 amp;#8943; \u0026 amp;#8943; (14) In the form: V,-one one-one potassium permanganate standard titration solution volume value, the unit is milliliter (ml); V2-blank test potassium permanganate standard titer volume value, the unit is milliliter (ml); The accurate value of the concentration of CT-potassium permanganate standard titration solution is the accurate value of Moore per liter (mol/L); 123] 4.12 Potassium permanganate standard titration solution · (sound K MNO,)one. .1mo l/l 4.12.1 Preparation Called 3.3 G potassium permanganate, dissolved in 1050m L water, slowly boil 15m in, cool down, place it in the dark for two weeks, and use it to deal with it. No. 4 glass filter pot filter. Stored in a brown bottle. The treatment of a glass filter pot refers to the glass filter in the same concentration of potassium permanganate solution with the same concentration. 5m in 4.12.2 calibration Called 0.2 5 g at 105 ° C for 1 110 ° C electricity The sodium oxalic acid is dry to constant working reagent in the oven, which is dissolved in 100m L sulfate solution (8 1092). Use the prepared potassium permanganate solution. Drip to the solution pink and keep 30 s. Do a blank test at the same time. The concentration of the standard titration solution of potassium permanganate [C (clicid KMN recognition)], the value is represented by Moore per liter (mol/L), calculated according to the formula (15): · (sound kmno,) m X 1 000 (V, one V 2) m \u0026 amp;#8943; (15) In the formula: — the accurate value of the quality of sodium oxalate, the unit is gram (9); - The value of the volume of potassium permanganate solution, the unit is milliliter (ml); 123] The value of the Moore quality of sodium oxalate, the unit is gram per Moore (g/mol [m (converge na, co,) \u003d 66-9991e 4.13 iron sulfate Nh,) 2Fe (so,) 2] \u003d 0.1 mot/l 4.13.1 Preparation Called 40 g sulfate metal -pressed [(nh4), Fe (so,) z · 6H20], dissolved in it 300m L sulfate solution (20), add 700m i water, shake well. 4.13.2 calibration A amount of 35. 00 m L^-40.00 m L prepared a well-preserved sulfate and a sulfuricate. , Add 25m L oxygen -oxygen, use potassium permanganate standard titration Ivaclc (told kmno,) \u003d 0. 1 mot/L] to the solution pink and keep 30 s. 123] The concentration of the standard titration solution of sulfate sulfate hinges {: nhozfe (so0z]}, the value is represented by Moore per liter (mol/l), according to the formula (16) calculated: In the form: [ . 123] v; - C, C benevolent (nh,), Fe (so,) z] \u003d v cl ..... \u0026 amp;#8943; \u0026 amp;#8943;,., ... · ... \u0026 amp;#8943; \u0026 amp;#8943; (16) The value of the unit is milliliter (ml); The accurate value of the concentration of potassium permanganate standard titration solution, the unit is Moore per liter (mol/L); The accurate value, the unit is milliliter (ml) o GB/T 601-2002 4. 14. 14 sulfuric acid decoration (or sulfate iron) standard titration solution c [c e (so,),] a one 0.1m ol/L, C [2 (nh,) zso, · CE (SO,),] 1 0.1 m ol/L 4.14.1 Preparation Called 40 g sulfuric acid [CE (50. ) 2 · 4H20] {or 67g sulfuric acid decoration [2 (nh,), so, · CE (S04) 2 · 4H20]}, add 30 mL water and 28 mL sulfuric acid, plus 300 mL water, heating Solk, add 650 ml of water and shake well. 4.14.2 calibration Get. 25G in 105, C-110 ℃ Electric oven, dry to constant working reagent reagent reagent sodium oxalic acid, dissolved in 75m L water, add 4 ml sulfate solution (20%) and 10 mi hydrochloric acid, heated to 65 '' C -700C, dripped with a well -equipped sulfuric acid bowl (or persimmon iron) solution to solution is light yellow. Plus 0.10 ml 1,10-Filinlin Yiyia Iron Instructions turn the solution into orange-red, and continue to titrate until the solution is light blue. Do a blank test at the same time. The concentration of the standard titration solution of sulfuric acid decoration (or sulfuric acid) (.), The value is expressed by Moore per liter (mol/L) per liter m x 1 00 0 , calculated by formula (17): \"One (V non--v2: Li (17) In the formula: The accurate value of the quality of s sodium sodium, the unit is gram (9); v, -Sulfate Or the value of the volume of the solution of the sulfuric acid decoration, the unit is milliliter (ml); V, —The value of the volume of the volume of the solution of the solution of the sulfate (or sulfate) of the blank test, the unit is milliliter (ml); ~ The value of the Moore quality of sodium oxalate, the unit is gram per Moore (g/mol) [m (convergence natc, o,) \u003d 66.9 99], 4. 15 the standard titration solution of sodium tetharium tetharium. 123] 4. 15. 1 Preparation According to the prescribed quantity of Table 12, take sodium ethyleine tetrazide, add 10 00m L water, heat dissolvedBut, shake well. Boom 1 2 The concentration of tetramidhalcetate sodium dicerium diacerum is the quality of sodium tetramidate,/g 0.1 40 0.05 20 0.02 8 4.5.2 calibration 4. 15.2. 1 Ahyshamine tetrazide Standard Titor Edta (EDTA) \u003d 0. 1 mol/L], [ C (EDTA) \u003d 0.05 mol/L] According to the specified quantity of Table 13, it is referred to as zinc in a high -temperature furnace at 800 ° C at a high temperature furnace of 士 士 50 ° C. Moisturize, add 2 mL hydrochloric acid solution (20%) to dissolve, add 100 mL water, adjust the solution pH to 7-8 with ammonia aquatic solution (10%), add 10 mL ammonia- chloride buffer solution nail (pH -10) and 5 drops of chromium black T indicating liquid (5 g/L), dripped with the preparation of tetramnium tetrazhacetate diaceromicate solution to solution from purple to pure blue. Do a blank test at the same time. Table 13 The concentration of the standard tither tither tither tetharium titanoholytate [C (EDTA)]/(moT/L) working benchmark reagent reagent quality of zinc oxide two /K 2 /k 0.1 0.05 0.15 [123 ] Ethyramine Tetraysidicate Sodium Diathmal Standard Titanium Concentration [C (EDTA)], the value is represented by Moore per liter (MOO), calculated according to the formula (18) : C (EDTA) m x 1 000 (v: one va) m '.'. \". \u0026 amp;#8943; '·\" ... \u0026 amp;#8943; \u0026 amp;#8943; (18 ) GB/T 601--2002 In the formula: The accurate value of the quality of the zinc oxide, the unit is gram (9); V, —Thyshalamine tetrazide sodium sodium dicerite The volume of the solution, the unit is milliliter (ml); V, —The value of the volume of the sodium solution of the tetharolythalmidine diacerum, the unit is milliliter (ml); The value, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39j. 4.15.2.2 Tetramnium tetramlcetate standard titer [C (EDTA) \u003d 0.02 mol/L] [ 123] Calculating. .4 2 g at 800, C -qi 50 ° C to a constant working reagent reagent zinc oxide, humidity with a small amount of water, add 3m L hydrochloric acid solution (2000) to dissolve, move people 250m L, one In the capacity bottle, dilute to the scale and shake well. Take 35.0 0m L-4 0.00 R Ni, add 70 ml of water, adjust the solution pH to 7-V8 with ammonia aquatic solution (10%), plus 10 ml ammonia one iron chloride buffer armor (pH-10) and 5 drops of inscriptions Black T indicating liquid (5 g/L), dripping with a tied tetharium tetharium tetharotic acid diacerotic acid diacerum to the solution from purple to pure blue. At the same time, do a blank test. The concentration of \"C (EDTA)] of ethyleine tetrazide sodium titron is said to be represented by Moore per liter (MOT/L), calculated according to the formula (19) : CC (EDTA ) m x 1 000 (v: one va) m '.'. \". \u0026 Amp;#8943; '·\" ... \u0026 amp;#8943; \u0026 amp;# 8943; (18) GB/T 601-2002 In the formula: The accurate value of the quality of the zinc oxide, the unit is gram (9); The value of the volume of tetraitic acid di -sodium solution, the unit is milliliter (ml); V, —The value of the volume of the volume of the sodium solution of the sodium acetate in the blank test, the unit is milliliter (ml); The value of the Moore of zinc, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39j. 4.15.2.2 Tetramnium tetharolate standard tituration solution [C (EDTA) \u003d 0.02 mol /L] Calculating. .4 2 g at 800, C 士 50 ° C, burned to constant working reagent zinc oxide, and humiditted with a small amount of water, plus 3m L hydrochloric acid solution ( 2000) Dissolt, migrate 250m L in a capacity bottle, dilute to the scale, shake. Take 35.0 0m L-4 0.00 R Ni, add 70 ml of water, use ammonia aquatic solution (10%) to adjust the solution pH to to to to 7-v8, plus 10 ml ammonia one iron chloride buffer solution (pH-10) and 5 drops of inscription Black T indicating liquid (5 g/L), use the prepared ethyleine tetrazide sodium sodium diharine solution Ding to the solution from purple to pure blue. At the same time, a blank test. The concentration of titanohoetic acid sodium tetrabars \"C (EDTA)], the value is per liter per liter (MOT/L (MOT/L (MOT/L (MOT/L (MOT/L. ) Represents, calculate according to the formula (19) : c (edta) ! X Mu 2V5, 0x '.. (V Yi Biao) m .. \u0026 Amp;# 8943; \u0026 amp;#8943;.. \u0026 Amp;#8943; \u0026 amp;#8943;. · \u0026 Amp;#8943; \u0026 amp;#8943; (19) In the formula: The accurate value of the quality of the zinc oxide, the unit is gram (g); ); VZ — The volume of the volume of ateramnohoethane tethane sodium solution, the unit is milliliter (ml); (ML); The value of the Moore quality of the zinc oxide, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39] 0 level zinc chemical standard titration solution [123 123 ] C (Z N CL,) \u003d 0.1m OL/L 4.16.1 Preparation Called 14 g to grasp zinc, dissolved in 1000m L hydrochloride (1-} -2000), shake uniform. 4.2 calibration Called 1.4 G Place 7D after 7D through magnesium nitrate saturated solution. Among them, add 10 ml ammonia -chlorine hinge buffer solution nails (pH} 10), drip the prepared chloride solution, add 5 drop chrome black T indicator solution (5) at the end of the end, and continue Ding to the solution from blue to purple -red. Do a blank test at the same time. The concentration of zinc chloride standard titration solution \"C (Zncl,)], the value is represented by the Moore per liter (mol/i), calculated by the formula (20): c (znnci,) m X 1 000 (v, one v,) m . 123] In the formula: M the accurate value of the quality of sodium tetrazharotide sodium, the unit is gram (g); VL scratching the volume of the zinc solution, the unit is milliliter (ml) ; VZ — The value of the volume of the zinc solution of a blank test grasping the zinc solution is milliliter (ml); Tittering solution of the standard titration of money (or sulfate) C (m g,) \u003d 0.1 m ol/L, C (mgso,) \u003d 0.1 m ol/l 4.17. 1 21 g grasping magnesium (mgCl, .6h, O) [or 25g magnesium sulfate (mg50, · 7H20)], dissolved in 1000m L hydrochloride (1+2000), put it for 1 month, after 1 month, after 1 month, Filter with glass No. 3. GB/T 601-2002 4. 17.2 calibration Called 1.4 g Sodium tetrazhamine tetrazhamine tetrazhamine after 7D was placed in a hydrloider saturated solution of magnesium nitrate. 10 ml ammonia one -chloride according to the buffer solution armor (P H} 10), drip with the prepared magnesium (or magnesium sulfate) solution, add 5 drops of chromium black T indicator solution at the end of (5 stare at L. ), Continue to tick until the solution changes from blue to purple. Do a blank test at the same time. The concentration of the standard titration solution of magnesium (or magnesium sulfate) (or magnesium sulfate), the value is represented by the Moore per liter (mol/L), calculated according to the formula (21) (V, -vi) m. ‘... ····, · ·. ·, · \u0026 Amp;#8943; (21) In the form: , - The accurate value of the quality of sodium ethyleine tetrazide, the unit is gram (9); V, grabbing The value of the volume of magnesium (or magnesium sulfate) solution, the unit is milliliter (ml); V, — The value of the blank test atmosphere of magnesium (or magnesium sulfate) solution, the unit is milliliter (ml); [[ML); [ 123] The value of the Moore mass of sodium tetrazharium acetate, the unit is gram per Moore (g/mol) [m (edta) \u003d 372.24] o 4. 18 lead. ] C benevolent P B (n O,),] \u003d 0.05m ol/L 4. 18. 1 Preparation Called 17 G nitrate, dissolved at 10 00m L. Nitrate solution (1+20 00) In the middle, shake well. 4.18.2 calibration The amount of 35.00 m L-40.00 m L is equipped with leading nitrite solution, plus 3m L to acetic acid (ice acetic acid) and 5g six methyl amine, plus 70 ML water and 2 drops of dilatephenol orange indicator (2 g/L,), titer \"C (EDTA) \u003d with ethyleine tetrazide Bright yellow. The concentration of the standard titration solution of the leading titration solution {C [PB (NO,)), the value is represented by Moore per liter (mol/L), calculated according to the formula (22): c [pb) (NO,) 2] Two V, C,. '. \u0026 Amp;#8943; \u0026 Amp;#8943;' ...... \u0026 amp;#8943; \u0026 amp;#8943; (22)
123] VL one acetomine tetrazide standard tituration solution value of the volume of tituration solution is milliliter (ml); C, —Thethamine tetrazharium sodium sodium dietary solution is accurate. Mol/L per liter (mol/l); The accurate value of the volume of the V-lead solution, the unit is milliliter (ml), 4. 19. 19 sodium naval titration solution C (n a clm) \u003d 0.1 m ol/l/l Methods 19.1 4.19.1.1 Preparation Called 5.9 G sodium chloride, dissolved in 10 00m L water, and shake well. 4. 19. 1.2 calibration According to the regulations of GB /T 9725-1988. Among them, the amount of sodium scratching sodium scratching is prepared by 35.00m L-40.00M L, plus 40 ml water, 10 ml starch solution (10 g/L), and the electrode of 216 silver electrode, type 217 dual double double The salt bridge saturated sweet mercury electrode is used as a parameter , and the titer [C (AGNO,)) is titled with silver nitric acid. Calculate VA. The concentration of the sodium scratching standard drip solution [C (NACI)], the value is expressed in the Moore per liter (mol/1.), calculated by the formula (23): , , V n C L Iva Seven 1 Little \u003d One-Two 2- v \"............ ..... \u0026 amp;#8943; \u0026 amp;# 8943;. \u0026 Amp;#8943; (23) In the type: VO nitrate standard titer volume value, the unit is milliliter (ml); The accurate value, the unit is the accurate value of the volume of the volume of the Moore per liter (mol/L) V-sodium scratching solution, the unit is milliliter (ml), GB/T 601-2002 4. 19.2 Method 2 Weigh 5.8 4 G ..30G has burned to a constant working reagent atmospheric sodium at a high -temperature furnace of 550 ° C 50 ° C, dissolved in water, moved 1000 people 1000 In the ML capacity bottle, dilute to the scale. The concentration of the standard titration solution of the sodium chemical titration [C (NACI)], the value is represented by the Moore per liter (mol/L) ,,,,, M X 1 000 cllva} ,. u \u003d one-two-diced two-in one-one- v J bamboo '' two '\u0026 amp;#8943; \"\" \"\" ·········· \u0026 amp;#8943; \u0026 amp;#8943; (24) In the form: M-s L's accurate value, unitFor (g); The accurate value of the volume of the V-sodium scratching solution, the unit is milliliter (ml); g/mol) [m (naci) \u003d 5 8.44 2], 4.20 sodium sulfate (or potassium sulfate or sulfate) standard titer solution C (n a SC n) \u003d 0.1 M OL/L, C (KSCN) \u003d 0.1 m OL/L, C (NH, SCN) \u003d 0.1 m ol/L 4.20.1 Preparation Called 8. 2g sodium sulfate (or 9.7 g of pot potassium sulfate or 7.9 g sulfur atmosphere), dissolved in 10 00m L water, shake well. 4.20.2 calibration 4.20.2.1 method 1 Press GB /T 9 725-19888 The regulations are determined. Among them: 0.6 g, dry to constant working reagents in a sulfuric acid dryer silver nitrate, dissolved in 90 mL water, add 10 mL starch solution (10 g/L) and 10 ml nitrate solution (25% ), Use the 216 silver electrode to refer to display electrode, type 217 dual -salt bridge saturated meal mercury electrode as a reference electrode, and use the prepared sodium sulfate (or potassium sulfate or sulfate) solution Drip , and calculate the concentration of VOO sodium sulfate (or potassium sulfate or sulfur sulfuric acid) in GB/T 9725-1988. The value is represented by Moore per liter (MOO), calculated according to the formula (25): one m xv, 1 m0 00., ... 123] In the formula: Two -the accurate value of the quality of silver nitrate, the unit is gram (9); Top — sodium sulfate (or potassium sulfate or sulfuric acid according to) the volume of the solution Value, the unit is milliliter (ml); The value of the Moore quality of M-silver nitrate, the unit is gram per Moore (g/mol) [m (agno,)) \u003d 169.87]. According to the regulations of GB /T 9725-1988. Among them: 35.00m L^ -4 0.00m L nitrate silver standard titration solution Ren C (Agno3) \u003d 0.1 mot/L], add 60 ml water, 10 ml starch solution (10 g/L) and 10 ML nitric acid solution (25 written), with type 216 silver electrode as indicating electrodes, type 217 dual -salt bridge saturated sweet mercury electrode as a reference electrode, and the preparation of sodium sulfenate (or potassium sulfate or sulfur sulfur Pei Sour money) solution dropletDetermine, and calculate VO. The concentration of the standard titration solution of VO. sodium sulfate (or potassium sulfate or sulfuric sulfuric acid) in GB/T 9725-1988. Each liter (mol/l) represents, calculate according to the formula (26): .. \u0026 amp;#8943; \u0026 amp;#8943;, · ... · .......... \u0026 amp #8943; \u0026 amp;#8943; (26) In the type: Volidation of the volume of Vitrine standard titration solution, the unit is milliliter (ml); The accurate value of the concentration of the solution, the unit is Moore per liter (moT/L); VO's accurate value of the volume of the volume of the solution of the solution of the solution of sodium sulfurization (or potassium sulfate or sulfate), the unit is milliliter ), 4.21 silver nitrate standard titration solution C (a g n oo \u003d 0.1 m ol/l gb/t 601-2002 4.21. 1 Preparation Called 17. 5 G nitrate silver, dissolved in 10 00m L water, shake it well. The solution is stored in a brown bottle. 4.21. 2 calibration According to the regulations of GB /T 9725-1988. -600 ° C burned to the constant working benchmark reagent sodium chloride, dissolved in 70 mL water, add 10 mL starch solution (10 g/L.) Electrical electrode, 217 Type double-salt bridge saturated sweet mercury electrode as a reference electrode, dripped with a prepared silver nitrate solution. Press 6.2. 2 in CUB/T 9725-1988 regulations for C. [ . 123] The concentration of silver nitrate standard titration solution [C (AGNO,)], the value is represented by Moore per liter (mol/L), calculated by formula (27): c (AGN Yao) m x 1 000 v .m two ''. '. ..., ... \u0026 amp;#8943; \u0026 amp;#8943; (27, style style Middle: The accurate value of the quality of sodium chloride V. The value of the volume of the silver nitrate solution M-— The value of the Moore mass of sodium chloride 4.22 Sodium nitrite standard titration The solution 4.22. 1 Preparation According to the specified quantity of Table 14, take sodium nitrite, , the unit is gram (9); , the unit is milliliter (ml); , the unit of the unit Moore(g/mol) [m (naci) \u003d 5 8. 442] o Sodium hydroxide and sodium -free carbonate, dissolved in 1 000 mL water, and shake well. Dechat 1 4 The concentration of sodium nitrite standard titration solution [c (n an o,)]/(mol/i) The quality of sodium nitrite,/9 sodium hydroxide Quality/9 Sodium -free Sodium M/9 Xing 0.15 4.22.2 calibration According to the provisions of Table 15, it is said to be dried in an electric oven at 120 ° C to a constant weight The working benchmark reagent has no water to amctoen acid sulfonic acid, plus nitrogen water to dissolve, add 200 ml of water and 20 mL hydrochloric acid, and install the electrode and measuring instrument (see Figure 1) according to the permanent stop dripping method (see Figure 1). About 10 mm in the dropper of the dropper of the sodium nitrite solution that is equipped with are equipped with . Proposal the tip of the dropper, wash the tip of the tip with a small amount of water, wash the liquid and in the human solution, continue to drop slowly, and observe the number of streams to read the number of and pointer. The current increases, and it is no longer the end point of the titration. Pre -use Table 15 The concentration of sodium nitrite standard titration solution EC (n an 02)]/(mol/i) The benchmark reagent reagent water -free alignment The quality of benzene sulfonic acid,/9 The rest of the ammonia water, The concentration of the standard titration solution of sodium nitrite [c (n ano,)], the value is expressed in the Moore per liter (mol/l) per liter (mol/l) , Calculate c (nanoz, one m 瓮 黔 '', two '·············· ; (28) The accurate value of the quality of aminozene sulfonic acid without water, the unit is gram (9); The volume of the volume of sodium nitrite solution, the unit is milliliter (ml); m The value of the Moore quality of aminozene sulfonic acid is not the unit. , GB/T 601 2002 t -. R one -one resistance (its resistance value is similar to the critical damping resistance value of the test flow); Variable resistance, the voltage that adds to the two -electrode L is about young MV) Township R: - resistance (2000 port); E dry battery (L.SV); k switch; [[ 123] g-test stream meter (sensitivity is 10, A factory grid); P platinum electrode FIG. 1 Term Type Installation Demonstration Figure 4.23 Standard acid derivative titration solution c (h ci o ') today 0.lmol/L 4.23. [123 ] 4 23- Preparation Method 1 Taking 8., 1 Holchromes, stirring the bet 5. Essence In ml acetic acid (ice acetic acid)., mix well. Drip 02 ml acetic acid, stir until liquid is uniform. After cooling, dilute to IO0 ml with acetic acid (ice phenolic acid). 4.23.1.2 Method 2: 3) The amount of high atmosphere of 8 7ml is taken, and mixed in the bet 59OML acetic acid (ice acetic acid). Take 01 mij, determine the quality score of the water according to the regulations of g/bt () 66 1 1988, and use the solvent to suck each time. Calculate the average value of the average of the two parallel measurement results [x,). Drinking the calculation amount is drunk and stir well. After cooling, dilute to 10o0rnl with acetic acid (ice acetic acid) and shake well. The amount of crispy (V) in the high -grabbing solution (V), the value is expressed in milliliter (m) L, calculated according to the formula (2) 9 calculate: v \u003d 5 32 o x w l 1 2. 8 ·· · Price · ········· ·· · · · · ··· \u0026 amp;#8943; \u0026 amp;#8943; (29) In the form: The quality score of the water in the high atmosphere solution is represented by%. 4.23.2 calibration Called 0.7 59 59 ℃ 101 ℃ electric oven to dry to constant working benchmark reagent reagent reagent. In the bottle, add 50 ml acetic acid (ice acetic acid), which is warmly dissolved. Add 3 drops of crystalline purple indicator (59/i), and use the preparation of the preparation of high chloride 3) This method controls the quality score of the water in the standard titration solution of high acidic titration solutions. .O5%. GB/T 601-2002 Dripment until the solution changes from purple to blue (slightly purple). Before use, calibration. The concentration of the standard titration solution at the standard at the calibration temperature [C (HC (O,)], the value is represented by Moore per liter (mol/L), according to the formula (30) calculated: m X 1 0 0 0 ck naiv,少\u003d 一VM ......................·\u0026amp;#8943; \u0026amp;#8943;(30)[123 ] Formula: Must be accurate for the quality of m -hydrogen acid hydrogenateReally values, the unit is gram (9); V high -grabbing the volume of the volume of the acid solution, the unit is milliliter (ml); G/Mol Ren M (KHC H, O,) \u003d 204.22], 4.23.3 correction method The temperature when using the standard titration solution of high -grasping acid should be the same as the temperature time time; if The temperature should be different, and the concentration of the standard for high chloroine should be titted to the value of the concentration of the liquid to the concentration of the concentration at the use of the temperature. The value is represented by Moore per liter (mol/L), calculated according to the formula (31): C (H C10,) 1+0.0011 (t not 7t). '\"' 'Two' ......... (3 1) In the formula: C — the accurate value of the concentration of the standard titration solution at the standard acid standard titration solution at the calibration temperature. /L); L — The value of the temperature of the tituration solution at a high acid standard titration solution at the time of use, the unit is the degree of degree Celsius (℃), T -calibrate the temperature of the temperature of the standard titration solution, the unit is the degree of degrees Celsius ( ° C); 0.001 1-The standard titration solution of high acid grabbing is the volume expansion coefficient every time I change. 4.24 Atmospheric Potassium One Drunk Standard Titanium C (KO H) 2. 0.1 M OL /L 19333334.24.1 Preparation Called 8 G potassium hydroxide, placed in polyethylene container, add a small amount of water (about 5m L.) To dissolve, diluted with ethanol (95%) to 10 00m L. Concerned 24 h. Use the plastic tube siphon upper layer of liquid to another polyethylene container. 4.24.2 calibration Called 0.7 5G in 105'c^ 110 ° C as an electric oven to constant The heavy work benchmark reagent reagent dental hydrogen acid potassium is dissolved in 50m L in water without carbon dioxide, add 2 dropphenolicon indicator (10 g/L), and drip it with a prepared potassium hydroxide one ethanol solution to the solution to solution Pink, At the same time, do a blank test at the same time. Calculation before use. Potassium hydroxide concentration of the standard titer of the standard titer [C (KOH)], the value is expressed by Moore per liter [mol/l), press Formula (32) calculation: C (koh) m x 1 000 (V2) m formula: M-benzide hydrogenate quality of hydrogen acid The accurate value, the unit is gram (b)+ v, -The value of the volume of the volume of potassium hydroxide, one drunk solution, the unit is milliliter [ml); V2 -blank test The values \u200b\u200bof the volume of potassium hydroxide one ethanol solution, the unit is milliliter (ml); The value of the Moore mass of m -hydrogenate hydrogenate in M, the unit is gram per Moore (g/mol [ M (khcsh, o,) \u003d 204. (32) 221. GB/T 601-2002 Appendix A (specified appendix) Standard at different temperatures Correct values \u200b\u200bof the volume of the titration solution The volume of the volume of the standard titration solution at different temperatures is calculated according to Table A. 1. Table a. 1 unit is milliliter per liter (m L/ i), [123 123 ] Sulfate solution sulfate solution · (told HMSO,)} '(HZSO,) _ Temperature/℃ Water and 0.05 mol/l Pymatic solution 0. 1 mol/ L; and _ 一 0.2 mol/ L Various water solution one liquid 1 C (HCL) \u003d 0. 5 mol/l hydrochloride solution c (hci) \u003d l mol/i 0. 5 mol/L, Sodium hydroxide solution c (naOh) - 0. 5 mol/i. 1M OT/i, Sodium hydroxide solution c (naOH) \u003d 1 mo l/l carbonated carbonated carbonate Sodium solution · (He Na, Co,) \u003d 1 mol/L Potassium hydroxide 1 Drunk solution c (koh) \u003d 0. 1 mot/ I q heart 0 j nj port ︺ ︺ dagger D bow ﹄﹄ 叼 Ri Dou 1 10 1.38 +1.38 + 1.36 [123 [123 ]+1.33 +1.29 +1.23 10 1.17 10 1.10 +0.99 +0.88 +0.77 +0. 64 +0.50 +0. 34 10 0.18 0.0 0 1 0.18 1 0.38 1 0.58 1 0.80 1 1.03 1 1.26 1 1.51 1 1. 76 1 2.01 1 2.30 1 2. 58 1 2. 86 1 3.04 1. 3. 1. 47 1 3. 78 1 4. 10 + 1.7 + 1.7 + 1. 6 + 1.6 + 1.5 + 1.5 +1.4 +1.3 +1. 1 +1.0 +0.9 +0.7 +0.6 +d.4 +0 2 0.00 one 0.2 one 0.4 1 0.6 1 0.9 1 1 1. 4 1 1. 7 1 2.0 [0 1.0 [0 [0 1.0 [0 [0 [10 1.0 [0 [0 [10 1.0 [0 [0 1 2.0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 [0 1.0 [0 1 2.0 [0 123] One 23 1 2.5 1 2.7 1 3.0 1 3.7 + 1.9 + 1.9 + 1. 8 + 1.8 + 1. 7 Upper 1.6 t 1. 5 Bow ︺ + 10.8 10 9.6 + 1. + 1 . + 1. +. +0.8 + 0.6 +0. 4 + 0 2 + 2 +2, 10 10 2. +2 Up 1. 1 1. · 1 + 1. 10 1. 10 1. 1 0.2 [123 ]一0.4 一0.? 一0.9 曰叫 -4. 一1 1 一1.4 一1.7 一2. 0[ 123] One 2 3 1 2.5 1 2.7 1 3.0 1 3.3 1 4.0 1 4.3 + 0.6 +0. 4 t 0 2 0. 0 1 0.2 1 0.5 1 0.7 1 1. 1.0 1 2 1 1.4 1 1. 7 1 2. 0 1 2.3 1 2. 6 1 2.9 1 3.2 [123 [123 ] One 3.5 1 3 8 1 1.4 1 2. 4
10,000 2.2 +2.2 +2.1 + 2 0 +1. 8 + 1. 7 + 1.5 + 1.3 + 1.1 +0. 9 10 0.7 [ 123]+ 0.5 one 0.2 0. 00 1 0.2 1 0 5 1 0 8 1 1.3 1 1.3 One 1.5 1 1.8 one 2.1 1 2.4 1 2.8 1 1 3.4 1 3.7 1.1 Dou 3.6 1 3 4 1 3.2 +3 0 +2.7 10 +2.3 +2.0 +1 8 + 1.6 10 1.3 4-1.1 one 0.8 10 0.6 10 0.3 0.00 1 0.6 1 0.9 [ 123] One 1.2 1 1. 5 1 1.8 1 2.1 1 2.4 1 2.8 1 3.5 1 3.9 One 4.2 + 3.3 Before 3 2 one 3.0 +2.8 +2.6 + 2 4 +2. 2 + 2.0 [ 123]+ 1. 8 + 1.5 + 1.3 + 1. 1 + (). 8 1 0.6 One 0.3 0. 0 One 0.3 1 0.6 1 0.9 1 1.2 1 5 1 1.8 1 1 2, 4 one 2.8 1 3 1 10 8. + 7. Ning 6. 10 5. -4. 1 3. 10 2. + l. 0. 0 one I. 1 2.2 1 3.3 1 4 One Han 1 6. 1 7_ -4 5 1 8, 5 1 9.6 1 10. 6 1 11. 6 1 12. 6 1 13. 7 1 14.8 9-10U1213N-151616171819-20 Muscle condition 23 August 1. 25 Weng 27 Shao is -4. 5.3 -167 0, Gate 30 ship 35 intestines Note1: The value of this table is measured at 20 ° C as the standard temperature. Note 2: The value of the \"Ten\" and \"One\" in the table is 20 C as the boundary.The correction value of the room temperature below 20 ° C is \"+\", and the supplementary values of 20 ° C are all . Note 3: The usage of this table is as 1L of sulfate (AL H2S04)MOL/L] When converted from 25 ° C to 20 ° C, the volume replenishment value is one, 5m L, The volume of 40.00 m 1 when it is converted to 20 ° C is: v, \u003d 40. 001 1 710. -05 0 x 40.0 0 \u003d 3 9.9 4 (-1,) 13
This is the most commonly used information in the general analysis room. Is your analysis room composed? These materials should be available, and it is also easy to find
This is the most commonly used information in the general analysis room. Is your analysis room composed? These materials should be available, and it is also easy to find
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This type of book general chemical bookstores have to buy
This type of book general chemical bookstores have to buy
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GB/T 601-2002
instead of GB/T 601-1988
Chemical reagent
standard titration solution Preparation
CH EM IC Al R EA GE NT-
Preparations of Standard Volumetric Solutions
2002-10-15 Release 2003-04-01 Implement
National People's Republic
National Quality Supervision Inspection and Quarantine General Administration
Published
121
GB/T 601-2002
n scoop
This standard instead of GB/T 601-1988 \"Preparation of Standard Solutions for Chemical Reagents Titration Analysis (Capacity Analysis)\" Essence
The main changes are as follows compared with GB/T 601-1988:
The standard name is modified to \"Preparation of Chemical Reaging Standard Titanium,;
-Added to the speed of titration ( This version of 3.3);
-The accuracy of the weighing (1988 version of 4.1.2.1,4.2.2.2.2.2.1, 4.6.2.1, 4.2.1, 4.12.2.1,
4.1 4 . 2.1, 4.15.2.1, 4.20.2. 1, 4.2 1.2.1, 4.22.2. 1, 4.23.2.2. (1988 version of 3.6; 3.6 of this version);
- The \"comparison\" method (1988 version of 3.6,3.7, 4.1.3, 4.2.3, 4.3.3, 4.6.3, 4.9.3,,,,,,,,,,,,,,,,, 4.12.3,4.14.3,
4. 20.3, 4.21.3);
- \"Expansion uncertainty of the average extension of the standard titration solution concentration in this standard should not be greater than 0.2 ，可根据需要
报出， 其计算参见附录B,'(本版的3.7、 附录B);
— 增加了用二级纯度标准物质或定值标推物质代替工作基准试剂进行Provisions for calibration or direct preparation
(3.8 in this version);
increased the requirements for storage containers (3. 11 in this version);
- Effective bit (1988 edition of 4.1.2.2,4.2.2.2.2, 4.3.2.2,
4.6.2.2, 4. 9. 2. 2, 4.12.2. 2, 4.14.2 .2, 4.20.2 .2, 4.2 1.2. 2, 4.22.2. 23.23.2. 2; This edition
4.1.2, 4.2.2,4.3.2, 4.6.2, 4.9.2.1, 4.1 2.2, 4.2,4.20.2.1, 4.21.2, 4.22.2, 4.23.2) ;
-The preparation of the standard titration solution of potassium chromate standard titration solution, potassium iodine standard titration solution and sodium scratching solution adds method 2 (123] working benchmark reagent directly () 4.5.2 of this version of this version 4.5.2 , 4.10.2,4.19.2);
- iconic standard titration solution and sodium sulfate standard titration solution add method two (4.9. 2. 2, 4.20 .2. 2); [ 123] - Modified the basic unit of the standard titration solution of sodium sulfate sulfate and the basic unit of the Australian standard titration solution (1988 version of 4.6.1,
4.7; 4.6.1, 4.7);
- Modify The calibration method of the standard titration solution of the zinc -based zinc, the standard tituration solution and sodium sulfate standard tituration solution (1988
annual version of 4.16 A.17 A.20; 4.16, 4.17, 4.20 in this version);
—The formulation of high -scratchy acid standard titration solution adds method 2 (4.23 of this version);
- \"Potassium hydroxide and one ethanol standard titration solution (', 4.24 in this version);
—And appendix A adds a supplementary value of sodium carbonate standard titration solution and potassium hydroxide one ethanol standard (1988 edition
Appendix A; Appendix A in this edition).
Appendix A of this standard is specified as specification Sexual Appendix and Appendix B are data appendix.
This standard is proposed by the former National Petroleum and Chemistry Industry Bureau. The Institute of Chemistry Reagents, Chengdu Chemical Reaging Factory.
This standard is mainly drafted: Hao Yulin, Liu Dongni, Wang Sufang, Qiang Jinglin, Guan Ruibao, Chen Junyu, Guo Shanpei.
This standard was first released in 1965. In 1977 For the first revision, the second revision in 1988.
GB/T 601-002
Chemical reagent
Standard Titanium Preparation
Scope
This standard specifies chemical reagent standard titration The preparation and calibration method of the solution.
This standard is applicable to the standard titration solution that prepares accurate concentrations to determine the purity of chemical reagentsDegree and impurities can also be selected for
in other industries.
2 specification reference file
The terms in the following standards have become the terms of this standard through the reference of this standard. For the reference documents of the date of note, all the subsequent
modification forms (excluding the content of errors) or the revised version are not applicable to this standard. Use the latest version of these files. The latest version of the reference file that does not note the date is applicable to this standard.
GB /T 6 03-2002 Preparation of Preparation and Products used in the test method of chemical reagent test methods
GB /T 6 06-1988 chemical reagent water measurement general method (Carl Fei Rate) (EQVI SO6 353-1 : 1982)
GB /T 6682-1992 Analysis Laboratory Water Specification and Test Method (Negiso 3696: 1987)
GB /T 9 725-1988 Chemical Reagent Power Display Fittings (EQVI SO 6353-1: 1982)
3 General regulations
3.1 In addition to other regulations, the purity of the reagents used should be more than analyzed. Experimental water should comply with the specifications of third-level water in GB/T 6682-1992.
3.2 The concentration of the standard titration solution prepared by this standard is except for high atmosphere acids, all refer to the concentration at 20 ° C. When the standard titration solution calibrates, direct
, if the temperature is different, the temperature should be corrected according to Appendix A. Standard titration solution calibration, direct preparation and use analysis Tian
flat, anvil code, titer tube, capacity bottle, single -standard line straw, etc. must be regularly corrected.
3.3 In the calibration and use of standard titration solutions, the titration speed should generally be maintained at 6 ml./min-8 ml./min.:123. The value of the benchmark reagent reagent reagent reagent is less than equal. When .5 g, according to the precision. .0 1m g of weighing; when the value is greater than 0.5 g,
is accurate. .1 mg weighing.
3.5 The concentration value of the preparation of standard titration solution should be within 5%of the scholars with a specified concentration value.
3.6 When the concentration of the standard titration solution of the standard titration solution, two people must perform experiments and do four parallel parallel each. The comparison of the poor
values \u200b\u200bper person is not greater than the critical critical difference [C, C, C, C, The relative value of RSS (4) \"is 2'0.15%, and the relative value of the poor measurement results of the eight parallel determinations of the two must not be
greater than the relative value of duplicate critical difference [C.RS5 (8)\". 18%. Take the average value of the two -person eight parallel measurement results as the measurement result. In
operational processThe five valid numbers are retained, and the concentration value reports the results to take four effective numbers.
3.7 Expansion uncertainty of the standard titration solution concentration in this standard generally should not be greater. The intestine can be reported as needed.
3.8 The concentration of the standard titration solution of the standard reagent of this standard uses the standard reagent reagent. When the accuracy of the standard titration solution concentration is higher
1) Extremely poor relative value is the ratio of the polar difference to the average value of the concentration of the result, which is represented by \"%\".
2) The definition of duplicate critical polarity [C, R (n)] is seen. When the ratio of \"%\" is expressed in \"123] GB/T 601-2002
, you can use a secondary purity standard material or fixed value standard substance to calibrate or prepare directly, and calculate
When the concentration of the quasi -drop solution, the concentration of the standard titration solution is less than equal to the standard titer of the standard titration solution in the calculation formula of the quasi -drop solution. When .02m OT/L, the standard titration solution with high concentrations should be boiled with high concentration and cold
before leaving.
3. Except for other regulations, the standard titration solution is preserved at room temperature (150C-250C) generally does not exceed two months. When the solution appears
turbidity, precipitation, color changes, etc.
3. The container that stored standard titration solutions should not be raised with the solution, and the thinnest part of the wall thickness should not be less than less. 5 mm
3. The solution used in the 12 standards is represented by (%) the mass scores (%), and only the (%) in the (95%) of the ethanol (95%) are the volume score
4 standard titration solution. 123] 4. 1
Clear
Standard Titanus solution of sodium nitrogen
Preparation
Called 110 g sodium hydroxide, dissolved in 100 mL carbon dioxide water, shake it, injection of polyethylene In the container, it is closed to the solution
. According to the provisions of Table 1, the upper layer liquid is taken with the amount of plastic tube, diluted with water -free water to 1 000mi, and shake it well.
Table 1
The concentration of the standard titration solution of sodium hydroxide [C (NAOH)] Eight mol/L) Volume V/ML
1 54
0.5 27 [123 ] 0.1 5.4
4.1.2 calibration
According to the provisions of Table 2, it is said to be removed from the benchmark reagent of hydrogen acid hydrogen acid hydrogen acid in 105`C --110 ° C to the constant weight. 123] Carbon oxide water dissolves, add 2 dropphenol fingersDemonstration liquid (10 g/IJ, dripped with the prepaid sodium hydroxide solution until the solution is pink, and keeps
30 s. At the same time, take a blank test.
Table 2
Standard Titor Drit in Sodium hydroxide
concentration [c (naOH)]/(mol/l.)
The base reagent
The quality of potassium hydrogen acid,/9
The volume of the volume of carbon dioxide [ 123] 1 7.5 80
0.5 3.6 80
0.1 0.75 50
The concentration of the standard titration solution of sodium hydroxide [C (NAOH)], the value is represented by Moore per liter (MOT/ i), pressed (prescribing formula (prescribed) 1) Calculation:
c (naOH)
m x 1 000
(V, one vs) m
In the formula:
M -— the accurate value of the quality of m -hydrogenate hydrogenate of m -benzene , The unit is the value of the volume of the volume of the unit of V -sodium hydroxide solution, the unit is milliliter (ml); ml);
M the value of the Moore quality of Potassium hydrogenate in m, the unit is G/Mol (G/MOL) lm (khceh, 0,) \u003d 204.22] o
4.2 Standard Titor hydrochloride solution
4.2.1 Preparation
Take the hydrochloric acid according to the prescribed in Table 3, note 10 00m L in water, shake it. Concentration [C (HCI)]/(mol/i) volume VML.
1
0.5
9o
{
0. 1 {.
4.2.2 calibration
According to the provisions of Table 4, it is said that the working benchmark reagent no water carbonate was burned to the constant heavy weight in the 270'c-300'C high-temperature furnace, which was dissolved in 50m L.
In the water, add 10 drops of Australphenol green, a custard red indicator, and drip to use the prepared hydrochloric acid solution until the solution changes from green to dark red, boil
2 min, and then tuck to the solution and then dark red. At the same time, do a blank test.
Table 4
The concentration of \"C (HCI)]/(m (, L, 'L)) working benchmark reagentless sodium carbonate of hydrochloric acid hydrochloric acid. 1 1.9
0. 5 0.95
0.1 0.2
Concentration kernel C (HCI) of standard titrative solution hydrochloride]. A '(HCI)
M X 1 000
(VL one VZ) m
In the formula:
M-一 一)))))))))))))) The accurate value of the quality of sodium sodium carbonate, the unit is gram (g);
v1 -The value of the volume of the hydrochloric acid solution, the unit is milliliter (ml-);
V: the value of the volume of the hydrochloric acid solution of the hydrochloric acid solution, the unit is milliliter The value of the quality, the unit is the standard titration solution of Smore (9/
4.3 Sulfuric acid
4.3. 1 Preparation
mollm (harm nayco,) \u003d 52.9 941
Aspen 5 sulfuric acid according to the specified table 5 , Slowly note 1000 ml of water, cool down, shake well.
Table 5
The concentration of the standard titration solution of sulfuric acid [合 hzso,)]/(m o l/l) {volume v/ml of sulfuric acid ] 30 [巧
12
I
I
1
1
0.5 0.1
4.3.2 calibration
According to the provisions of Table 6 Take 2700C^ 300 \u0026 quot; C High -temperature furnace burned to constant working reagent reagent reagentless sodium carbonate, dissolved in 50m L.
water, add 10 drops of Australian phenol green, a campaign liquid, prepare preparation for preparation The good sulfate solution is dripped to the solution from green to dark red, boiled
2 min, and then titer to the solution and then dark red. Do a blank test at the same time.
Table 6
Sulfuric acid standard, solubble. Concentration [· [sound Hzsoj]/(mol/IJ working reference reagent reagent no water carbonate quality ./ Only
0.5 0.1
01.95
GB/T 601-2002
Standard Titanic solution sulfuric acid. Concentration benevolence (borrow hzso,) 1, value is represented by Moore per liter (mol/l), calculated according to formula (3):
· (told HLS04, m x 1 000
(V, a V v, one V ,) M
\u0026 amp;#8943; \u0026 amp;#8943; (3) In the formula:
- The accurate value of the quality of sodium -free sodium carbonate, the unit is gram (g);
- The volume of the sulfuric acid solution, the unit is milliliter (ml);
- The value of the volume of the sulfate solution of the blank test, the unit is milliliter (ml); The value of quality, the unit is G/Mol [m (sound na, co,) \u003d 5 2.994],
4-4 sodium carbonate standard titer solution
4.4. 1 Preparation
According to the provisions of Table 7, remove sodium -free sodium carbonate, dissolved in 1 000 ml, and shake it well.
Wrap 7
The concentration of sodium carbonate standard titration solution [C (C (meteing nayco,)]/(m o l/l) The mass of sodium -free sodium carbonate m/q
4.4.2 calibration
Introduction 35. 00 m L, -40.00 m L prepared sodium carbonate solutions, plus water of water with a volume of water, plus 10 drops of citrhenol green one red
indicator liquid, and use the corresponding concentration of the corresponding concentration of hydrochloric acid specified in Table 8 The standard titration solution is titled until the solution changes from green to dark red, boiled for 2 min, after cooling
, continues to titer until the solution is dark red.
Dechat 8
The concentration of the standard titration solution of sodium carbonate
[(合 na7c0,)]/(mol/l) The volume V/ml
The concentration of the standard titration solution of the hydrochloric acid hydrochloric acid
123] [C (HCI)] eight mol/1)
1 50 1
0.1 20 0.1
The concentration of sodium carbonate standard titration solution [· (told Natco) \", the value is per liter (mol per mol (mol) /L) Means, calculate according to the formula (4):
· (told na, co,)- v ·· \u0026 amp;#8943; \u0026 amp;#8943; (4)
:
V, -The volume of the volume of standard titration solution of hydrochloric acid, the unit is milliliter (ml);
C, hydrochloride standards standard The accurate value of the concentration of the ticking solution is the accurate value of the volume of the volume of the sodium carbonate solution per liter (mol/L);
· (including K 2CRZ0 7, 1 0.'mol/L
4.5. 1 method 1
4.5. 1. 1 Preparation
Called 5g of potassium chromate, dissolved at 10 00m L, dissolved at 10 00m L, In the water, shake well.
4.5. 1.2 calibration
The amount of 35.00 m L-40.00 m L is equipped with a well-preserved potassium chromate solution, placed in the iodine bottle, add 2g of potassium iodide and 20m L sulfate soluble
GB/T 601- 2002
liquid (20%), shake it, place 10 min in the dark. Add 150 mL water (15`c-20} c), use sodium sulfate sulfate standard titer solution
Ren C (NA2S201) \u003d 0.1 mol/L \"titer, add 2 ml starch indicator solution (10 g/L) at the end of the end, and continue to digue until the solution changes from blue to
bright green. At the same time, make V. TestExamination
The concentration of the standard titration solution of potassium chromate: (sound K, CR20,)], the value is represented by Moore per liter (mol/L), calculated according to the formula (5) ) _ (V, one v) ci
v
. \"'· One' ··, ..................
V -sodium sulfate sulfate standard tither the volume value of the volume, the unit is milliliter (ml);
V one -one blank test of the volume of the volume of sodium sulfate sulfate, the unit is milliliter (ml) ;
C, the accurate value of the concentration of sodium sulfate sulfate standard titration solution, the unit is Moore per liter (mol/L);
The accurate value of the volume of the potassium chromate solution, the unit is milliliter (the unit is milliliter ( ml),
4.5.2 method 2
Called 4.9 0 G 士 ..20G has been dried to a constant working reagent potassium chromium in the electric oven at 120 ° C 2 ° C. Yu Shui,
In the 1000 ml capacity bottle, dilute to the scale.
The concentration of the standard titration solution of potassium chromate is [· (including K2Cr, 0,)], and the value is per liter of Moore (mol/ mol/ L) Represents, calculate according to the formula (6):
one · (sound
kz cr2 o,)
m
x
000
1 claw 4 [123 ] In the formula:
The accurate value of the quality of m -chromicopalate, the unit is gram (g);
V accurate value of the volume of the potassate solution, the unit is milliliter (ml); [123 ] The value of the Moore quality of the potassium chromate,
4.6 Sodium sulfate sodium sulfate standard titration solution
C (na, easy 03) 2. 0.1 m 01/i
4.6.1 with overhead [123 ] The unit is K/MoB [m (K2Cr, O,) 1 49.0311.
Called 26 G sodium sulfate (NATSZ O, · 5H20) (or 16g sodium -free sulfate sulfate) , Add 0.2 g sodium without water carbonate, dissolve in
1 000 ml of water, slowly boil for 10 min, cool. Filter after two weeks.
4.6.2 calibration
Called 0.18 g in. 120 ° C, 2 ° C, dry to constant work benchmark reagent, potassium chromate, placed in iodine bottle, dissolved in 25m 1_ water,
Add 2g of potassium iodide and 20 mL sulfate solution (20%), shake well well , 10 min are placed in the dark.ML starch indicator (10 g/L), continue to tuck to the solution from blue to bright green
. Do a blank test at the same time.
The concentration of sodium sulfate standard titration solution [C (NA2S, O,)], the value is represented by Moore per liter (mot/L), calculated by formula (7):
C (na, s, O,)
RRCX 1 000
(V, one V,) m
. two. . \u0026 amp;#8943;. two. two. .. ... ·· \u0026 amp;#8943; \u0026 amp;#8943; (7)
In the form:
The accurate value of the quality of the two -chromicopa acid, the unit is gram (g);
v , The volume of sodium sulfate solution, the unit is milliliter (ml);
V, —The value of the volume of sodium sulfate solution of the blank test, the unit is milliliter (ml);
m -chromium heavy chromium The value of the Moore quality of potassium acid, the unit is K/Mol (g/mol) [m (talked K, CR, O,) \u003d 4 9.0 31],
GB/T 601-2002
Australian standard Ding Ding solution
[(told br,) one. · 1MO LT
1 Preparation
Called 3g of potassium Australian acid and 25 G A vascularized potassium, dissolved in 1000 mi, water, shake well.
2 calibration
Obtain 35. 00 ml, -40.00 ml prepared Australian solution, placed in the iodine quantity bottle,
47 price 47
(20%), shake, shake it in the dark, in the dark, in the dark, in the dark Surveillance 5 min. Add 150 mL water (15 ° C, 20 \u0026 quot; C)
Add 2 G iodide and 5 ml of hydrochloride
, use sodium sulfate standard titration solution
[c (na2sioa) \u003d 0.1 mol/1. 1. ] Ding Ding, add 2 ml of starch indicator (10 g/L) at the end of the end, and continue to drop until the solution blue disappears.
Do a blank test at the same time.
, the concentration of the standard titration solution [· (Costing BRZ)], the value is expressed by the Moore per liter (mol/i.), Calculated by the formula (8) V, one vz) c,
v
formula:
V, one -one sodium sodium sulfate, the volume of the standard titration solution, the unit is milliliter (ml ');
v: one The value of the volume of the standard titration solution of sodium sulfate sulfate in the blank test is the accurate value of the concentration of the unit of sulfur sulfate in the standard of sodium sulfate. 1.);
The accurate value of the volume of the A -Australian solution, the unit is milliliter (ml),
4.8 Potassium Australian Titanium Discoving Solid
· (including K BRO, 1 0.'mol/L
4.8. 1 Preparation
Called 3g of potassium Australium, dissolved in 10 00m L water, Shake well.
4.8. 2 calibration
A amount of 35.00 m L-40.00 M L prepared the potassium Australization solution, placed in the iodine quantity bottle, add 2g of potassium iodide and 5m L hydrochloric acid solution
(20%), shake well, place 5 min in the dark. Add 150 ml of water (15 ° C and 20 \u0026 quot; c), and use sodium sulfate sulfate standard titration solution
kernel C (na, s20,) .. 1 MOT/L] Tit Ding, add 2 mL starch indicator solution (10 g/L) at the end of the end, and continue to titer to the blue of the solution.
At the same time, do a blank test. Ren '(Guangdong KBRO,)],
v
The value is represented by Moore per liter (MOT/L), calculated by formula (9):
· (sound kbroo_ (v, one v) c,
v
··· \u0026 amp;#8943; \u0026 amp;#8943; (9 \"
In the form:
V, sulfur sulfate standard titer volume value, the unit is milliliter ( ml);
V -one blank test sodium sulfate sulfate standard tither volume value, the unit is milliliter (ml);
C, the accurate value of the concentration of the standard titration solution of sodium sodium sulfate, The unit is Moore per liter (mol/L);
The accurate value of the volume of V-potassium solution solution, the unit is milliliter (ml),
4.9 iodine standard titration solution
· (Covenant 1 2,, 1 2, (Cost 1 2, (Cost 1 2, 1 2, One 0.'mol/L
4.9.1 Preparation
It is called 13 G iodine and 35 G iodide, dissolved in 100 mL water, diluted to 1 000 ml, shaken well, stored in a brown bottle. [123 123. ] 4.9.2
4.9.2
calibration. The reagent dioxide is placed in the iodine bottle, adding 6m L
standard titration solution \"C (naOH) \u003d 1m ol/L to solverse, add 50m L water, add 2 dropphenol 酞 酞 试 试 T liquid (10g /L), use sulfuric acid
standard titer solution: · (H2S0,) 1mo L /L] Titrate to the solution colorless, force. /L), dripped with the prepared iodine solution until the solution was light blue.Do a blank test at the same time.
碘标准滴定溶液的浓度〔·(合12)l，数值以摩尔每升(M01/1-)表示，按式(10)计算:
m X 1 000
(V, One vz) m
. .. \u0026 amp;#8943; \u0026 amp;#8943;, two. ... \u0026 amp;#8943; \u0026 amp;#8943;,. \u0026 amp;#8943; \u0026 amp;#8943; (10)
In the:
accurate value of the quality of tritenuel dioxide, the unit is gram ( 9);
V, the volume of the iodine solution, the unit is milliliter (ml);
V2 — the value of the volume of the iodine solution of the blank test, the unit is milliliter (ml);
m-. Two 0LYJ Mo. Essence Essence ,one. Essence Momo i7G/ mol) [m (buckle 6yo,) 1 49.460].
4.9.2.2 Method 2
A amount of 35.00m L-40.00 m L prefined iodine solution 150m L water (15'c^ -20c), use sulfur sulfur
sodium sulfate standard titer [c (na, s, 0,) to dick, add 2 mL starch indicator solution at the end of the end (10 g/i), continue to drop
until the blue of the solution disappears.
At the same time, the iodine test consumed by water at the same time: take 250m L water (150c-200c), add. .05m I_-0.20 m L, prepared the iodine solution
liquid and 2ml starch indicator liquid (10 g/L), use sodium sulfate to sulfate standard titration solution [c (na \u0026 quot; sz03) \u003d 0.1 mol/i] titration To the solution blue
, the color disappears.
The concentration of iodine standard titration solution [. (IZ)], the value is represented by Moore per liter (mol/l), calculated according to the formula (1 \"
(v; one recognition) c,
v3 one v,
.,. , Two .. \u0026 amp;#8943; \u0026 amp;#8943;, \u0026 amp;#8943; (11)
1-2
Type:
V, sodium sulfate standard tituration solution volume of the volume of the volume Value, the unit is milliliter (ml);
V, —The value of the volume of the standard titration solution of sodium sulfate sodium sulfate, the unit is milliliter (ml); The accurate value, the unit is Moore per liter (mol/L);
V iodine solution's volume accurate value, the unit is milliliter (mi,);
V, —— iodine solution of the plus people in the blank experiment in the blank experiment The accurate value of the volume,The unit is milliliter (LNL),
4.10 Potassium iodate standard titration solution
4.10.1 method 1
4.10-1 door formulation
Called potassium iodate specified in Table 9, dissolved in 10 00m L water, shake well.
Table 9
Potassium iodate standard titration. The quality of liquid [· (sound KIO,)]/(mol/L) potassium iodine,/9
0.3 11
0.1 3.6
4.10.1.2 calibration
According to the provisions of Table 10, take it, take it, take it, take it, take it, take the provisions of Table 10, take it. The preparation of potassium iodine solution, water, and potassium iodide is placed in the iodine quantity bottle, add 5m L hydrochloric acid solution (20%), shake
evenly, and place 5 min in the dark. Add 150 m1_ water (15'c ^-2 0'C), use sodium sulfur sulfate standard titration solution
GB/T 601-2002
[c (na, s, 03) two. 1 mol/l] Titan, add 2 ml starch indicator solution (10 g/L) at the end of the end, and continue to drop until the solution blue disappears.
Do a blank test at the same time.
Table 10
Potassium iodine standard titration solution [· (KIO,) 7/(mol/L) The volume of V/ml of water about potassium iodine solution V/ml of potassium iodate solution, the mass of potassium iodide MFG [123 ] 0.3 11.00^-13.00 20 3
0.1 35.00^-40.00} 1
Potassium iodine standard titer concentration kernels (green KIO) \", the value is expressed by Moore per liter (Moo,), it is expressed, Calculate (12) calculate:
· (KIO,) (V, One V2) c,
v
. \u0026 amp;#8943;. \u0026 amp;#8943;,. .. \u0026 amp;#8943;. two. Essence Essence ···. Two (12)
type:
V, —The value of the volume of sodium sulfate standard titration solution, the unit is milliliter (ml);
V, —— White test sodium sulfate sulfate standard titration solution The volume value, the unit is milliliter (ml);
. — The accurate value of the concentration of sodium sulfate standard titration solution is the accurate value of the volume of the unit of Moore per liter (mol/i); -2 Method 2
It is called the potassium iodine iodine that has been dried to the constant weight reagent in Table 11 in Table 11 in Table 11. Dilute to the scale in the capacity bottle.
Table 1 1
Potassium iodine standard, fixed, liquid concentration kernel C (harmonious KK \u0026 GT;) 7 eight m al/L)The quality of potassium iodine in the working benchmark/9
0.3 10.70 士 0.50
0.1.1.57 士 0. 15
The concentration of potassium iodine standard titration solution [. (Li KIO) port, the value is represented by Moore per liter (mol/L), calculated according to the formula (13):
n
· (green ki0) ...... ... \u0026 amp #8943; \u0026 amp;#8943; (13)
Make up ﹄﹄
\"3
m x 1 000
vm
type:
The quality of m -potassium potassium iodate The accurate value, the unit is gram (9);
The accurate value of the volume of the pot potassium iodine solution, the unit of the unit of ml (ml) o
Moore mass of m -iodate,
4.11 Standard Titoric Solution
The unit is G/Mol (G/MOL) LM (including KIO,) \u003d · 667],
· (True H2C2O N, One. 'Mol/L
4.11. 1 Preparation
Called 6. 49
4.11.2 calibration
A amount of 35.0 C
oxalic acid (H2C20, · 2H20), dissolved in 1 000 ml water, shake well.
ML^-40.00 mL prepares a good oxalic acid solution, add 100 mL sulfate solution (8+92), use potassium permanganate standard drop
, liquid [(sound kmn0,) \u003d 0.1 m o light L] Ding Ding, heated to about 650C at the end of the end, continue to titer to pink solution, and keep
30 s. At the same time, a blank test. ] B
. The value is represented by Moore per liter (mol/i), and calculated by the formula (14):
GB/T 601-2002
· (Township H2C0,) _ (V, One V. ) c
v
.............................................................................................................................................................................................................................................. \u0026 amp;#8943; \u0026 amp;#8943; (14)
In the form:
V,-one one-one potassium permanganate standard titration solution volume value, the unit is milliliter (ml);
V2-blank test potassium permanganate standard titer volume value, the unit is milliliter (ml);
The accurate value of the concentration of CT-potassium permanganate standard titration solution is the accurate value of Moore per liter (mol/L); 123] 4.12 Potassium permanganate standard titration solution
· (sound K MNO,)one. .1mo l/l
4.12.1 Preparation
Called 3.3 G potassium permanganate, dissolved in 1050m L water, slowly boil 15m in, cool down, place it in the dark for two weeks, and use it to deal with it.
No. 4 glass filter pot filter. Stored in a brown bottle.
The treatment of a glass filter pot refers to the glass filter in the same concentration of potassium permanganate solution with the same concentration. 5m in
4.12.2 calibration
Called 0.2 5 g at 105 ° C for 1 110 ° C electricity The sodium oxalic acid is dry to constant working reagent in the oven, which is dissolved in 100m L sulfate solution
(8 1092). Use the prepared potassium permanganate solution. Drip to the solution pink and keep
30 s. Do a blank test at the same time.
The concentration of the standard titration solution of potassium permanganate [C (clicid KMN recognition)], the value is represented by Moore per liter (mol/L), calculated according to the formula (15):
· (sound kmno,) m X 1 000
(V, one V 2) m
\u0026 amp;#8943; (15)
In the formula:
— the accurate value of the quality of sodium oxalate, the unit is gram (9);
- The value of the volume of potassium permanganate solution, the unit is milliliter (ml); 123] The value of the Moore quality of sodium oxalate, the unit is gram per Moore (g/mol [m (converge na, co,) \u003d 66-9991e
4.13 iron sulfate Nh,) 2Fe (so,) 2] \u003d 0.1 mot/l
4.13.1 Preparation
Called 40 g sulfate metal -pressed [(nh4), Fe (so,) z · 6H20], dissolved in it 300m L sulfate solution (20), add 700m i
water, shake well.
4.13.2 calibration
A amount of 35. 00 m L^-40.00 m L prepared a well-preserved sulfate and a sulfuricate. , Add 25m L oxygen -oxygen, use potassium permanganate standard titration
Ivaclc (told kmno,) \u003d 0. 1 mot/L] to the solution pink and keep 30 s. 123] The concentration of the standard titration solution of sulfate sulfate hinges {: nhozfe (so0z]}, the value is represented by Moore per liter (mol/l), according to the formula (16)
calculated:
In the form: [
. 123] v; -
C,
C benevolent (nh,), Fe (so,) z] \u003d v cl ..... \u0026 amp;#8943; \u0026 amp;#8943;,., ... · ... \u0026 amp;#8943; \u0026 amp;#8943; (16)
The value of the unit is milliliter (ml);
The accurate value of the concentration of potassium permanganate standard titration solution, the unit is Moore per liter (mol/L); The accurate value, the unit is milliliter (ml) o
GB/T 601-2002
4. 14. 14 sulfuric acid decoration (or sulfate iron) standard titration solution
c [c e (so,),] a one 0.1m ol/L, C [2 (nh,) zso, · CE (SO,),] 1 0.1 m ol/L
4.14.1 Preparation
Called 40 g sulfuric acid [CE (50. ) 2 · 4H20] {or 67g sulfuric acid decoration [2 (nh,), so, · CE (S04) 2 · 4H20]}, add
30 mL water and 28 mL sulfuric acid, plus 300 mL water, heating Solk, add 650 ml of water and shake well.
4.14.2 calibration
Get. 25G in 105, C-110 ℃ Electric oven, dry to constant working reagent reagent reagent sodium oxalic acid, dissolved in 75m L water, add
4 ml sulfate solution (20%) and 10 mi hydrochloric acid, heated to 65 '' C -700C, dripped with a well -equipped sulfuric acid bowl (or persimmon iron) solution to
solution is light yellow. Plus 0.10 ml 1,10-Filinlin Yiyia Iron Instructions turn the solution into orange-red, and continue to titrate until the solution is light blue.
Do a blank test at the same time.
The concentration of the standard titration solution of sulfuric acid decoration (or sulfuric acid) (.), The value is expressed by Moore per liter (mol/L) per liter
m x 1 00 0
, calculated by formula (17):
\"One (V non--v2: Li (17)
In the formula:
The accurate value of the quality of s sodium sodium, the unit is gram (9);
v, -Sulfate Or the value of the volume of the solution of the sulfuric acid decoration, the unit is milliliter (ml);
V, —The value of the volume of the volume of the solution of the solution of the sulfate (or sulfate) of the blank test, the unit is milliliter (ml);
~ The value of the Moore quality of sodium oxalate, the unit is gram per Moore (g/mol) [m (convergence natc, o,) \u003d 66.9 99],
4. 15 the standard titration solution of sodium tetharium tetharium. 123] 4. 15. 1 Preparation
According to the prescribed quantity of Table 12, take sodium ethyleine tetrazide, add 10 00m L water, heat dissolvedBut, shake well.
Boom 1 2
The concentration of tetramidhalcetate sodium dicerium diacerum is the quality of sodium tetramidate,/g
0.1 40
0.05 20
0.02 8
4.5.2 calibration
4. 15.2. 1 Ahyshamine tetrazide Standard Titor Edta (EDTA) \u003d 0. 1 mol/L], [ C (EDTA) \u003d 0.05 mol/L]
According to the specified quantity of Table 13, it is referred to as zinc in a high -temperature furnace at 800 ° C at a high temperature furnace of 士 士 50 ° C. Moisturize, add 2 mL hydrochloric acid solution (20%) to dissolve, add 100 mL water, adjust the solution pH to 7-8 with ammonia aquatic solution (10%), add 10 mL ammonia-
chloride buffer solution nail (pH -10) and 5 drops of chromium black T indicating liquid (5 g/L), dripped with the preparation of tetramnium tetrazhacetate diaceromicate solution to
solution from purple to pure blue. Do a blank test at the same time.
Table 13
The concentration of the standard tither tither tither tetharium titanoholytate [C (EDTA)]/(moT/L) working benchmark reagent reagent quality of zinc oxide two /K 2 /k 0.1 0.05 0.15 [123 ] Ethyramine Tetraysidicate Sodium Diathmal Standard Titanium Concentration [C (EDTA)], the value is represented by Moore per liter (MOO), calculated according to the formula (18)
:
C (EDTA)
m x 1 000
(v: one va) m
'.'. \". \u0026 amp;#8943; '·\" ... \u0026 amp;#8943; \u0026 amp;#8943; (18 )
GB/T 601--2002
In the formula:
The accurate value of the quality of the zinc oxide, the unit is gram (9);
V, —Thyshalamine tetrazide sodium sodium dicerite The volume of the solution, the unit is milliliter (ml);
V, —The value of the volume of the sodium solution of the tetharolythalmidine diacerum, the unit is milliliter (ml); The value, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39j.
4.15.2.2 Tetramnium tetramlcetate standard titer [C (EDTA) \u003d 0.02 mol/L] [ 123] Calculating. .4 2 g at 800, C -qi 50 ° C to a constant working reagent reagent zinc oxide, humidity with a small amount of water, add
3m L hydrochloric acid solution (2000) to dissolve, move people 250m L, one In the capacity bottle, dilute to the scale and shake well. Take 35.0 0m L-4 0.00 R Ni, add
70 ml of water, adjust the solution pH to 7-V8 with ammonia aquatic solution (10%), plus 10 ml ammonia one iron chloride buffer armor (pH-10) and 5 drops of inscriptions
Black T indicating liquid (5 g/L), dripping with a tied tetharium tetharium tetharotic acid diacerotic acid diacerum to the solution from purple to pure blue. At the same time, do a blank
test.
The concentration of \"C (EDTA)] of ethyleine tetrazide sodium titron is said to be represented by Moore per liter (MOT/L), calculated according to the formula (19)
:
CC (EDTA )
m x 1 000
(v: one va) m
'.'. \". \u0026 Amp;#8943; '·\" ... \u0026 amp;#8943; \u0026 amp;# 8943; (18)
GB/T 601-2002
In the formula:
The accurate value of the quality of the zinc oxide, the unit is gram (9); The value of the volume of tetraitic acid di -sodium solution, the unit is milliliter (ml);
V, —The value of the volume of the volume of the sodium solution of the sodium acetate in the blank test, the unit is milliliter (ml); The value of the Moore of zinc, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39j.
4.15.2.2 Tetramnium tetharolate standard tituration solution [C (EDTA) \u003d 0.02 mol /L]
Calculating. .4 2 g at 800, C 士 50 ° C, burned to constant working reagent zinc oxide, and humiditted with a small amount of water, plus
3m L hydrochloric acid solution ( 2000) Dissolt, migrate 250m L in a capacity bottle, dilute to the scale, shake. Take 35.0 0m L-4 0.00 R Ni, add
70 ml of water, use ammonia aquatic solution (10%) to adjust the solution pH to to to to 7-v8, plus 10 ml ammonia one iron chloride buffer solution (pH-10) and 5 drops of inscription
Black T indicating liquid (5 g/L), use the prepared ethyleine tetrazide sodium sodium diharine solution Ding to the solution from purple to pure blue. At the same time, a blank
test.
The concentration of titanohoetic acid sodium tetrabars \"C (EDTA)], the value is per liter per liter (MOT/L (MOT/L (MOT/L (MOT/L (MOT/L. ) Represents, calculate according to the formula (19)
:
c (edta)
! X Mu 2V5, 0x '..
(V Yi Biao) m
.. \u0026 Amp;# 8943; \u0026 amp;#8943;.. \u0026 Amp;#8943; \u0026 amp;#8943;. · \u0026 Amp;#8943; \u0026 amp;#8943; (19)
In the formula:
The accurate value of the quality of the zinc oxide, the unit is gram (g); );
VZ — The volume of the volume of ateramnohoethane tethane sodium solution, the unit is milliliter (ml); (ML);
The value of the Moore quality of the zinc oxide, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39] 0
level zinc chemical standard titration solution [123 123 ] C (Z N CL,) \u003d 0.1m OL/L
4.16.1 Preparation
Called 14 g to grasp zinc, dissolved in 1000m L hydrochloride (1-} -2000), shake uniform.
4.2 calibration
Called 1.4 G Place 7D after 7D through magnesium nitrate saturated solution. Among them, add 10 ml ammonia -chlorine hinge buffer solution nails (pH} 10), drip the prepared chloride solution, add 5
drop chrome black T indicator solution (5) at the end of the end, and continue Ding to the solution from blue to purple -red. Do a blank test at the same time.
The concentration of zinc chloride standard titration solution \"C (Zncl,)], the value is represented by the Moore per liter (mol/i), calculated by the formula (20):
c (znnci,)
m X 1 000
(v, one v,) m
. 123] In the formula:
M the accurate value of the quality of sodium tetrazharotide sodium, the unit is gram (g);
VL scratching the volume of the zinc solution, the unit is milliliter (ml) ;
VZ — The value of the volume of the zinc solution of a blank test grasping the zinc solution is milliliter (ml); Tittering solution of the standard titration of money (or sulfate)
C (m g,) \u003d 0.1 m ol/L, C (mgso,) \u003d 0.1 m ol/l
4.17. 1 21 g grasping magnesium (mgCl, .6h, O) [or 25g magnesium sulfate (mg50, · 7H20)], dissolved in 1000m L hydrochloride
(1+2000), put it for 1 month, after 1 month, after 1 month, Filter with glass No. 3.
GB/T 601-2002
4. 17.2 calibration
Called 1.4 g Sodium tetrazhamine tetrazhamine tetrazhamine after 7D was placed in a hydrloider saturated solution of magnesium nitrate. 10 ml ammonia one -chloride according to the buffer solution armor (P H} 10), drip with the prepared magnesium (or magnesium sulfate) solution, add 5 drops of chromium black T indicator solution at the end of
(5 stare at L. ), Continue to tick until the solution changes from blue to purple. Do a blank test at the same time.
The concentration of the standard titration solution of magnesium (or magnesium sulfate) (or magnesium sulfate), the value is represented by the Moore per liter (mol/L), calculated according to the formula (21) (V, -vi) m. ‘... ····, · ·. ·, · \u0026 Amp;#8943; (21)
In the form:
, - The accurate value of the quality of sodium ethyleine tetrazide, the unit is gram (9);
V, grabbing The value of the volume of magnesium (or magnesium sulfate) solution, the unit is milliliter (ml);
V, — The value of the blank test atmosphere of magnesium (or magnesium sulfate) solution, the unit is milliliter (ml); [[ML); [ 123] The value of the Moore mass of sodium tetrazharium acetate, the unit is gram per Moore (g/mol) [m (edta) \u003d 372.24] o
4. 18 lead. ] C benevolent P B (n O,),] \u003d 0.05m ol/L
4. 18. 1 Preparation
Called 17 G nitrate, dissolved at 10 00m L. Nitrate solution (1+20 00) In the middle, shake well.
4.18.2 calibration
The amount of 35.00 m L-40.00 m L is equipped with leading nitrite solution, plus 3m L to acetic acid (ice acetic acid) and 5g six methyl amine, plus
70 ML water and 2 drops of dilatephenol orange indicator (2 g/L,), titer \"C (EDTA) \u003d
with ethyleine tetrazide Bright yellow.
The concentration of the standard titration solution of the leading titration solution {C [PB (NO,)), the value is represented by Moore per liter (mol/L), calculated according to the formula (22):
c [pb) (NO,) 2] Two V, C,. '. \u0026 Amp;#8943; \u0026 Amp;#8943;' ...... \u0026 amp;#8943; \u0026 amp;#8943; (22)
123] VL one acetomine tetrazide standard tituration solution value of the volume of tituration solution is milliliter (ml);
C, —Thethamine tetrazharium sodium sodium dietary solution is accurate. Mol/L per liter (mol/l);
The accurate value of the volume of the V-lead solution, the unit is milliliter (ml),
4. 19. 19 sodium naval titration solution
C (n a clm) \u003d 0.1 m ol/l/l
Methods 19.1
4.19.1.1 Preparation
Called 5.9 G sodium chloride, dissolved in 10 00m L water, and shake well.
4. 19. 1.2 calibration
According to the regulations of GB /T 9725-1988. Among them, the amount of sodium scratching sodium scratching is prepared by 35.00m L-40.00M L, plus
40 ml water, 10 ml starch solution (10 g/L), and the electrode of 216 silver electrode, type 217 dual double double The salt bridge saturated sweet mercury electrode is used as a parameter
, and the titer [C (AGNO,)) is titled with silver nitric acid.
Calculate VA.
The concentration of the sodium scratching standard drip solution [C (NACI)], the value is expressed in the Moore per liter (mol/1.), calculated by the formula (23):
, , V n
C L Iva Seven 1 Little \u003d One-Two 2-
v
\"............ ..... \u0026 amp;#8943; \u0026 amp;# 8943;. \u0026 Amp;#8943; (23)
In the type:
VO nitrate standard titer volume value, the unit is milliliter (ml); The accurate value, the unit is the accurate value of the volume of the volume of the Moore per liter (mol/L)
V-sodium scratching solution, the unit is milliliter (ml),
GB/T 601-2002
4. 19.2 Method 2
Weigh 5.8 4 G ..30G has burned to a constant working reagent atmospheric sodium at a high -temperature furnace of 550 ° C 50 ° C, dissolved in water, moved
1000 people 1000 In the ML capacity bottle, dilute to the scale.
The concentration of the standard titration solution of the sodium chemical titration [C (NACI)], the value is represented by the Moore per liter (mol/L) ,,,,, M X 1 000
cllva} ,. u \u003d one-two-diced two-in one-one-
v J bamboo
'' two '\u0026 amp;#8943; \"\" \"\" ·········· \u0026 amp;#8943; \u0026 amp;#8943; (24)
In the form:
M-s L's accurate value, unitFor (g);
The accurate value of the volume of the V-sodium scratching solution, the unit is milliliter (ml); g/mol) [m (naci) \u003d 5 8.44 2],
4.20 sodium sulfate (or potassium sulfate or sulfate) standard titer solution
C (n a SC n) \u003d 0.1 M OL/L, C (KSCN) \u003d 0.1 m OL/L, C (NH, SCN) \u003d 0.1 m ol/L
4.20.1 Preparation
Called 8. 2g sodium sulfate (or 9.7 g of pot potassium sulfate or 7.9 g sulfur atmosphere), dissolved in 10 00m L water, shake well.
4.20.2 calibration
4.20.2.1 method 1
Press GB /T 9 725-19888 The regulations are determined. Among them: 0.6 g, dry to constant working reagents in a sulfuric acid dryer
silver nitrate, dissolved in 90 mL water, add 10 mL starch solution (10 g/L) and 10 ml nitrate solution (25% ), Use the 216 silver electrode to refer to
display electrode, type 217 dual -salt bridge saturated meal mercury electrode as a reference electrode, and use the prepared sodium sulfate (or potassium sulfate or sulfate) solution Drip
, and calculate the concentration of VOO
sodium sulfate (or potassium sulfate or sulfur sulfuric acid) in GB/T 9725-1988. The value is represented by Moore per liter (MOO), calculated according to the formula
(25):
one m xv, 1 m0 00., ... 123] In the formula:
Two -the accurate value of the quality of silver nitrate, the unit is gram (9);
Top — sodium sulfate (or potassium sulfate or sulfuric acid according to) the volume of the solution Value, the unit is milliliter (ml);
The value of the Moore quality of M-silver nitrate, the unit is gram per Moore (g/mol) [m (agno,)) \u003d 169.87].
According to the regulations of GB /T 9725-1988. Among them: 35.00m L^ -4 0.00m L nitrate silver standard titration solution
Ren C (Agno3) \u003d 0.1 mot/L], add 60 ml water, 10 ml starch solution (10 g/L) and 10 ML nitric acid solution (25 written), with type 216
silver electrode as indicating electrodes, type 217 dual -salt bridge saturated sweet mercury electrode as a reference electrode, and the preparation of sodium sulfenate (or potassium sulfate or sulfur sulfur Pei
Sour money) solution dropletDetermine, and calculate VO.
The concentration of the standard titration solution of VO.
sodium sulfate (or potassium sulfate or sulfuric sulfuric acid) in GB/T 9725-1988. Each liter (mol/l) represents, calculate according to the formula
(26):
.. \u0026 amp;#8943; \u0026 amp;#8943;, · ... · .......... \u0026 amp #8943; \u0026 amp;#8943; (26)
In the type:
Volidation of the volume of Vitrine standard titration solution, the unit is milliliter (ml); The accurate value of the concentration of the solution, the unit is Moore per liter (moT/L);
VO's accurate value of the volume of the volume of the solution of the solution of the solution of sodium sulfurization (or potassium sulfate or sulfate), the unit is milliliter ),
4.21 silver nitrate standard titration solution
C (a g n oo \u003d 0.1 m ol/l
gb/t 601-2002
4.21. 1 Preparation
Called 17. 5 G nitrate silver, dissolved in 10 00m L water, shake it well. The solution is stored in a brown bottle.
4.21. 2 calibration
According to the regulations of GB /T 9725-1988. -600 ° C burned to the constant
working benchmark reagent sodium chloride, dissolved in 70 mL water, add 10 mL starch solution (10 g/L.) Electrical electrode, 217
Type double-salt bridge saturated sweet mercury electrode as a reference electrode, dripped with a prepared silver nitrate solution. Press 6.2. 2 in CUB/T 9725-1988
regulations for C. [
. 123] The concentration of silver nitrate standard titration solution [C (AGNO,)], the value is represented by Moore per liter (mol/L), calculated by formula (27):
c (AGN Yao)
m x 1 000
v .m
two ''. '. ..., ... \u0026 amp;#8943; \u0026 amp;#8943; (27,
style style Middle:
The accurate value of the quality of sodium chloride
V. The value of the volume of the silver nitrate solution
M-— The value of the Moore mass of sodium chloride
4.22 Sodium nitrite standard titration The solution
4.22. 1 Preparation
According to the specified quantity of Table 14, take sodium nitrite,
, the unit is gram (9);
, the unit is milliliter (ml);
, the unit of the unit Moore(g/mol) [m (naci) \u003d 5 8. 442] o
Sodium hydroxide and sodium -free carbonate, dissolved in 1 000 mL water, and shake well.
Dechat 1 4
The concentration of sodium nitrite standard titration solution
[c (n an o,)]/(mol/i)
The quality of sodium nitrite,/9 sodium hydroxide Quality/9 Sodium -free Sodium M/9
Xing 0.15
4.22.2 calibration
According to the provisions of Table 15, it is said to be dried in an electric oven at 120 ° C to a constant weight The working benchmark reagent has no water to amctoen acid sulfonic acid, plus
nitrogen water to dissolve, add 200 ml of water and 20 mL hydrochloric acid, and install the electrode and measuring instrument (see Figure 1) according to the permanent stop dripping method (see Figure 1). About 10 mm in the dropper of the dropper of the sodium nitrite solution that is equipped with
are equipped with
. Proposal the tip of the dropper, wash the tip of the tip with a small amount of water, wash the liquid and in the human solution, continue to drop slowly, and observe the number of streams to read the number of
and pointer. The current increases, and it is no longer the end point of the titration. Pre -use
Table 15
The concentration of sodium nitrite standard titration solution
EC (n an 02)]/(mol/i)
The benchmark reagent reagent water -free alignment
The quality of benzene sulfonic acid,/9
The rest of the ammonia water,
The concentration of the standard titration solution of sodium nitrite [c (n ano,)], the value is expressed in the Moore per liter (mol/l) per liter (mol/l) , Calculate
c (nanoz, one m 瓮 黔 '', two '·············· ; (28)
The accurate value of the quality of aminozene sulfonic acid without water, the unit is gram (9);
The volume of the volume of sodium nitrite solution, the unit is milliliter (ml);
m The value of the Moore quality of aminozene sulfonic acid is not the unit. ,
GB/T 601 2002
t -.
R one -one resistance (its resistance value is similar to the critical damping resistance value of the test flow); Variable resistance, the voltage that adds to the two -electrode L is about young MV) Township
R: - resistance (2000 port);
E dry battery (L.SV);
k switch; [[
123] g-test stream meter (sensitivity is 10, A factory grid);
P platinum electrode
FIG. 1 Term Type Installation Demonstration Figure
4.23 Standard acid derivative titration solution
c (h ci o ') today 0.lmol/L
4.23. [123 ] 4 23-
Preparation
Method 1
Taking 8., 1 Holchromes, stirring the bet 5. Essence In ml acetic acid (ice acetic acid)., mix well. Drip 02 ml acetic acid, stir until
liquid is uniform. After cooling, dilute to IO0 ml with acetic acid (ice phenolic acid).
4.23.1.2 Method 2: 3)
The amount of high atmosphere of 8 7ml is taken, and mixed in the bet 59OML acetic acid (ice acetic acid). Take 01 mij, determine the quality score of the water according to the regulations of g/bt () 66 1
1988, and use the solvent to suck each time. Calculate the average value of the average of the two parallel measurement results [x,). Drinking the calculation amount is drunk and stir well. After cooling, dilute to
10o0rnl with acetic acid (ice acetic acid) and shake well.
The amount of crispy (V) in the high -grabbing solution (V), the value is expressed in milliliter (m) L, calculated according to the formula (2) 9 calculate:
v \u003d 5 32 o x w l 1 2. 8 ·· · Price · ········· ·· · · · · ··· \u0026 amp;#8943; \u0026 amp;#8943; (29)
In the form:
The quality score of the water in the high atmosphere solution is represented by%.
4.23.2 calibration
Called 0.7 59 59 ℃ 101 ℃ electric oven to dry to constant working benchmark reagent reagent reagent. In the bottle, add 50 ml acetic acid (ice acetic acid), which is warmly dissolved. Add 3 drops of crystalline purple indicator (59/i), and use the preparation of the preparation of high chloride
3) This method controls the quality score of the water in the standard titration solution of high acidic titration solutions. .O5%.
GB/T 601-2002
Dripment until the solution changes from purple to blue (slightly purple). Before use, calibration.
The concentration of the standard titration solution at the standard at the calibration temperature [C (HC (O,)], the value is represented by Moore per liter (mol/L), according to the formula (30)
calculated:
m X 1 0 0 0 ck naiv,少\u003d 一VM ......................·\u0026amp;#8943; \u0026amp;#8943;(30)[123 ] Formula:
Must be accurate for the quality of m -hydrogen acid hydrogenateReally values, the unit is gram (9);
V high -grabbing the volume of the volume of the acid solution, the unit is milliliter (ml); G/Mol Ren M (KHC H, O,) \u003d 204.22],
4.23.3 correction method
The temperature when using the standard titration solution of high -grasping acid should be the same as the temperature time time; if The temperature should be different, and the concentration of the standard for high chloroine should be titted to the value of the concentration of the liquid to the concentration of the concentration at the use of the temperature. The value is represented by Moore per liter (mol/L), calculated according to the formula (31):
C (H C10,) 1+0.0011 (t not 7t). '\"' 'Two' ......... (3 1)
In the formula:
C — the accurate value of the concentration of the standard titration solution at the standard acid standard titration solution at the calibration temperature. /L);
L — The value of the temperature of the tituration solution at a high acid standard titration solution at the time of use, the unit is the degree of degree Celsius (℃),
T -calibrate the temperature of the temperature of the standard titration solution, the unit is the degree of degrees Celsius ( ° C);
0.001 1-The standard titration solution of high acid grabbing is the volume expansion coefficient every time I change.
4.24 Atmospheric Potassium One Drunk Standard Titanium
C (KO H) 2. 0.1 M OL /L 19333334.24.1 Preparation
Called 8 G potassium hydroxide, placed in polyethylene container, add a small amount of water (about 5m L.) To dissolve, diluted with ethanol (95%) to 10 00m L.
Concerned 24 h. Use the plastic tube siphon upper layer of liquid to another polyethylene container.
4.24.2 calibration
Called 0.7 5G in 105'c^ 110 ° C as an electric oven to constant The heavy work benchmark reagent reagent dental hydrogen acid potassium is dissolved in 50m L
in water without carbon dioxide, add 2 dropphenolicon indicator (10 g/L), and drip it with a prepared potassium hydroxide one ethanol solution to the solution to solution Pink,
At the same time, do a blank test at the same time. Calculation before use.
Potassium hydroxide concentration of the standard titer of the standard titer [C (KOH)], the value is expressed by Moore per liter [mol/l), press Formula (32) calculation:
C (koh)
m x 1 000
(V2) m
formula:
M-benzide hydrogenate quality of hydrogen acid The accurate value, the unit is gram (b)+
v, -The value of the volume of the volume of potassium hydroxide, one drunk solution, the unit is milliliter [ml);
V2 -blank test The values \u200b\u200bof the volume of potassium hydroxide one ethanol solution, the unit is milliliter (ml);
The value of the Moore mass of m -hydrogenate hydrogenate in M, the unit is gram per Moore (g/mol [ M (khcsh, o,) \u003d 204.
(32)
221.
GB/T 601-2002
Appendix A
(specified appendix)
Standard at different temperatures Correct values \u200b\u200bof the volume of the titration solution
The volume of the volume of the standard titration solution at different temperatures is calculated according to Table A. 1.
Table a. 1 unit is milliliter per liter (m L/ i), [123 123 ] Sulfate solution sulfate solution
· (told HMSO,)} '(HZSO,) _
Temperature/℃
Water and
0.05 mol/l
Pymatic solution
0. 1 mol/ L;
and _ 一
0.2 mol/ L
Various water solution one
liquid 1
C (HCL) \u003d
0. 5 mol/l
hydrochloride solution
c (hci) \u003d
l mol/i
0. 5 mol/L,
Sodium hydroxide solution
c (naOh) -
0. 5 mol/i.
1M OT/i,
Sodium hydroxide solution
c (naOH) \u003d
1 mo l/l
carbonated carbonated carbonate Sodium solution
· (He Na, Co,)
\u003d 1 mol/L
Potassium hydroxide 1
Drunk solution
c (koh) \u003d
0. 1 mot/ I
q heart 0 j nj port ︺ ︺ dagger D bow ﹄﹄ 叼
Ri Dou
1
10 1.38
+1.38
+ 1.36 [123 [123 ]+1.33
+1.29
+1.23
10 1.17
10 1.10
+0.99
+0.88
+0.77
+0. 64
+0.50
+0. 34
10 0.18
0.0 0
1 0.18
1 0.38
1 0.58
1 0.80
1 1.03
1 1.26
1 1.51
1 1. 76
1 2.01
1 2.30
1 2. 58
1 2. 86
1 3.04
1. 3. 1. 47
1 3. 78
1 4. 10
+ 1.7
+ 1.7
+ 1. 6
+ 1.6
+ 1.5
+ 1.5
+1.4
+1.3
+1. 1
+1.0
+0.9
+0.7
+0.6
+d.4
+0 2
0.00
one 0.2
one 0.4
1 0.6
1 0.9
1
1 1. 4
1 1. 7
1 2.0 [0
1.0 [0 [0
1.0 [0 [0 [10
1.0 [0 [0 [10
1.0 [0 [0
1 2.0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0
1 2.0 [0 123] One 23
1 2.5
1 2.7
1 3.0
1 3.7
+ 1.9
+ 1.9
+ 1. 8
+ 1.8
+ 1. 7
Upper 1.6
t 1. 5
Bow ︺
+ 10.8
10 9.6
+ 1.
+ 1 .
+ 1.
+.
+0.8
+ 0.6
+0. 4
+ 0 2
+ 2
+2,
10
10 2.
+2
Up 1.
1 1.
· 1
+ 1.
10 1.
10 1.
1 0.2 [123
]一0.4
一0.?
一0.9
曰叫
-4.
一1 1
一1.4
一1.7
一2. 0[ 123] One 2 3
1 2.5
1 2.7
1 3.0
1 3.3
1 4.0
1 4.3
+ 0.6
+0. 4
t 0 2
0. 0
1 0.2
1 0.5
1 0.7
1 1. 1.0
1 2
1 1.4
1 1. 7
1 2. 0
1 2.3
1 2. 6
1 2.9
1 3.2 [123 [123 ] One 3.5
1 3 8
1
1.4
1 2. 4
10,000 2.2
+2.2
+2.1
+ 2 0
+1. 8
+ 1. 7
+ 1.5
+ 1.3
+ 1.1
+0. 9
10 0.7 [ 123]+ 0.5
one 0.2
0. 00
1 0.2
1 0 5
1 0 8
1 1.3 1 1.3
One 1.5
1 1.8
one 2.1
1 2.4
1 2.8
1
1 3.4
1 3.7
1.1
Dou 3.6
1 3 4
1 3.2
+3 0
+2.7
10
+2.3
+2.0
+1 8
+ 1.6
10 1.3
4-1.1
one 0.8
10 0.6
10 0.3
0.00
1 0.6
1 0.9 [ 123] One 1.2
1 1. 5
1 1.8
1 2.1
1 2.4
1 2.8
1 3.5
1 3.9
One 4.2
+ 3.3
Before 3 2
one 3.0
+2.8
+2.6
+ 2 4
+2. 2
+ 2.0 [ 123]+ 1. 8
+ 1.5
+ 1.3
+ 1. 1
+ (). 8
1 0.6
One 0.3
0. 0
One 0.3
1 0.6
1 0.9
1 1.2
1 5
1 1.8
1
1 2, 4
one 2.8
1 3 1
10 8.
+ 7.
Ning 6.
10 5.
-4.
1 3.
10 2.
+ l.
0. 0
one I.
1 2.2
1 3.3
1 4
One Han
1 6.
1 7_
-4 5
1 8, 5
1 9.6
1 10. 6
1 11. 6
1 12. 6
1 13. 7
1 14.8
9-10U1213N-151616171819-20 Muscle condition 23 August 1. 25 Weng 27 Shao is
-4. 5.3 -167
0, Gate
30 ship 35 intestines
Note1: The value of this table is measured at 20 ° C as the standard temperature.
Note 2: The value of the \"Ten\" and \"One\" in the table is 20 C as the boundary.The correction value of the room temperature below 20 ° C is \"+\", and the supplementary values of 20 ° C are all
.
Note 3: The usage of this table is as 1L of sulfate (AL H2S04)MOL/L] When converted from 25 ° C to 20 ° C, the volume replenishment value is one, 5m L,
The volume of 40.00 m 1 when it is converted to 20 ° C is:
v, \u003d 40. 001 1 710. -05 0 x 40.0 0 \u003d 3 9.9 4 (-1,)
13
GB/T 601-2002
instead of GB/T 601-1988
Chemical reagent
standard titration solution Preparation
CH EM IC Al R EA GE NT-
Preparations of Standard Volumetric Solutions
2002-10-15 Release 2003-04-01 Implement
National People's Republic
National Quality Supervision Inspection and Quarantine General Administration
Published
121
GB/T 601-2002
n scoop
This standard instead of GB/T 601-1988 \"Preparation of Standard Solutions for Chemical Reagents Titration Analysis (Capacity Analysis)\" Essence
The main changes are as follows compared with GB/T 601-1988:
The standard name is modified to \"Preparation of Chemical Reaging Standard Titanium,;
-Added to the speed of titration ( This version of 3.3);
-The accuracy of the weighing (1988 version of 4.1.2.1,4.2.2.2.2.2.1, 4.6.2.1, 4.2.1, 4.12.2.1,
4.1 4 . 2.1, 4.15.2.1, 4.20.2. 1, 4.2 1.2.1, 4.22.2. 1, 4.23.2.2. (1988 version of 3.6; 3.6 of this version);
- The \"comparison\" method (1988 version of 3.6,3.7, 4.1.3, 4.2.3, 4.3.3, 4.6.3, 4.9.3,,,,,,,,,,,,,,,,, 4.12.3,4.14.3,
4. 20.3, 4.21.3);
- \"Expansion uncertainty of the average extension of the standard titration solution concentration in this standard should not be greater than 0.2 ，可根据需要
报出， 其计算参见附录B,'(本版的3.7、 附录B);
— 增加了用二级纯度标准物质或定值标推物质代替工作基准试剂进行Provisions for calibration or direct preparation
(3.8 in this version);
increased the requirements for storage containers (3. 11 in this version);
- Effective bit (1988 edition of 4.1.2.2,4.2.2.2.2, 4.3.2.2,
4.6.2.2, 4. 9. 2. 2, 4.12.2. 2, 4.14.2 .2, 4.20.2 .2, 4.2 1.2. 2, 4.22.2. 23.23.2. 2; This edition
4.1.2, 4.2.2,4.3.2, 4.6.2, 4.9.2.1, 4.1 2.2, 4.2,4.20.2.1, 4.21.2, 4.22.2, 4.23.2) ;
-The preparation of the standard titration solution of potassium chromate standard titration solution, potassium iodine standard titration solution and sodium scratching solution adds method 2 (123] working benchmark reagent directly () 4.5.2 of this version of this version 4.5.2 , 4.10.2,4.19.2);
- iconic standard titration solution and sodium sulfate standard titration solution add method two (4.9. 2. 2, 4.20 .2. 2); [ 123] - Modified the basic unit of the standard titration solution of sodium sulfate sulfate and the basic unit of the Australian standard titration solution (1988 version of 4.6.1,
4.7; 4.6.1, 4.7);
- Modify The calibration method of the standard titration solution of the zinc -based zinc, the standard tituration solution and sodium sulfate standard tituration solution (1988
annual version of 4.16 A.17 A.20; 4.16, 4.17, 4.20 in this version);
—The formulation of high -scratchy acid standard titration solution adds method 2 (4.23 of this version);
- \"Potassium hydroxide and one ethanol standard titration solution (', 4.24 in this version);
—And appendix A adds a supplementary value of sodium carbonate standard titration solution and potassium hydroxide one ethanol standard (1988 edition
Appendix A; Appendix A in this edition).
Appendix A of this standard is specified as specification Sexual Appendix and Appendix B are data appendix.
This standard is proposed by the former National Petroleum and Chemistry Industry Bureau. The Institute of Chemistry Reagents, Chengdu Chemical Reaging Factory.
This standard is mainly drafted: Hao Yulin, Liu Dongni, Wang Sufang, Qiang Jinglin, Guan Ruibao, Chen Junyu, Guo Shanpei.
This standard was first released in 1965. In 1977 For the first revision, the second revision in 1988.
GB/T 601-002
Chemical reagent
Standard Titanium Preparation
Scope
This standard specifies chemical reagent standard titration The preparation and calibration method of the solution.
This standard is applicable to the standard titration solution that prepares accurate concentrations to determine the purity of chemical reagentsDegree and impurities can also be selected for
in other industries.
2 specification reference file
The terms in the following standards have become the terms of this standard through the reference of this standard. For the reference documents of the date of note, all the subsequent
modification forms (excluding the content of errors) or the revised version are not applicable to this standard. Use the latest version of these files. The latest version of the reference file that does not note the date is applicable to this standard.
GB /T 6 03-2002 Preparation of Preparation and Products used in the test method of chemical reagent test methods
GB /T 6 06-1988 chemical reagent water measurement general method (Carl Fei Rate) (EQVI SO6 353-1 : 1982)
GB /T 6682-1992 Analysis Laboratory Water Specification and Test Method (Negiso 3696: 1987)
GB /T 9 725-1988 Chemical Reagent Power Display Fittings (EQVI SO 6353-1: 1982)
3 General regulations
3.1 In addition to other regulations, the purity of the reagents used should be more than analyzed. Experimental water should comply with the specifications of third-level water in GB/T 6682-1992.
3.2 The concentration of the standard titration solution prepared by this standard is except for high atmosphere acids, all refer to the concentration at 20 ° C. When the standard titration solution calibrates, direct
, if the temperature is different, the temperature should be corrected according to Appendix A. Standard titration solution calibration, direct preparation and use analysis Tian
flat, anvil code, titer tube, capacity bottle, single -standard line straw, etc. must be regularly corrected.
3.3 In the calibration and use of standard titration solutions, the titration speed should generally be maintained at 6 ml./min-8 ml./min.:123. The value of the benchmark reagent reagent reagent reagent is less than equal. When .5 g, according to the precision. .0 1m g of weighing; when the value is greater than 0.5 g,
is accurate. .1 mg weighing.
3.5 The concentration value of the preparation of standard titration solution should be within 5%of the scholars with a specified concentration value.
3.6 When the concentration of the standard titration solution of the standard titration solution, two people must perform experiments and do four parallel parallel each. The comparison of the poor
values \u200b\u200bper person is not greater than the critical critical difference [C, C, C, C, The relative value of RSS (4) \"is 2'0.15%, and the relative value of the poor measurement results of the eight parallel determinations of the two must not be
greater than the relative value of duplicate critical difference [C.RS5 (8)\". 18%. Take the average value of the two -person eight parallel measurement results as the measurement result. In
operational processThe five valid numbers are retained, and the concentration value reports the results to take four effective numbers.
3.7 Expansion uncertainty of the standard titration solution concentration in this standard generally should not be greater. The intestine can be reported as needed.
3.8 The concentration of the standard titration solution of the standard reagent of this standard uses the standard reagent reagent. When the accuracy of the standard titration solution concentration is higher
1) Extremely poor relative value is the ratio of the polar difference to the average value of the concentration of the result, which is represented by \"%\".
2) The definition of duplicate critical polarity [C, R (n)] is seen. When the ratio of \"%\" is expressed in \"123] GB/T 601-2002
, you can use a secondary purity standard material or fixed value standard substance to calibrate or prepare directly, and calculate
When the concentration of the quasi -drop solution, the concentration of the standard titration solution is less than equal to the standard titer of the standard titration solution in the calculation formula of the quasi -drop solution. When .02m OT/L, the standard titration solution with high concentrations should be boiled with high concentration and cold
before leaving.
3. Except for other regulations, the standard titration solution is preserved at room temperature (150C-250C) generally does not exceed two months. When the solution appears
turbidity, precipitation, color changes, etc.
3. The container that stored standard titration solutions should not be raised with the solution, and the thinnest part of the wall thickness should not be less than less. 5 mm
3. The solution used in the 12 standards is represented by (%) the mass scores (%), and only the (%) in the (95%) of the ethanol (95%) are the volume score
4 standard titration solution. 123] 4. 1
Clear
Standard Titanus solution of sodium nitrogen
Preparation
Called 110 g sodium hydroxide, dissolved in 100 mL carbon dioxide water, shake it, injection of polyethylene In the container, it is closed to the solution
. According to the provisions of Table 1, the upper layer liquid is taken with the amount of plastic tube, diluted with water -free water to 1 000mi, and shake it well.
Table 1
The concentration of the standard titration solution of sodium hydroxide [C (NAOH)] Eight mol/L) Volume V/ML
1 54
0.5 27 [123 ] 0.1 5.4
4.1.2 calibration
According to the provisions of Table 2, it is said to be removed from the benchmark reagent of hydrogen acid hydrogen acid hydrogen acid in 105`C --110 ° C to the constant weight. 123] Carbon oxide water dissolves, add 2 dropphenol fingersDemonstration liquid (10 g/IJ, dripped with the prepaid sodium hydroxide solution until the solution is pink, and keeps
30 s. At the same time, take a blank test.
Table 2
Standard Titor Drit in Sodium hydroxide
concentration [c (naOH)]/(mol/l.)
The base reagent
The quality of potassium hydrogen acid,/9
The volume of the volume of carbon dioxide [ 123] 1 7.5 80
0.5 3.6 80
0.1 0.75 50
The concentration of the standard titration solution of sodium hydroxide [C (NAOH)], the value is represented by Moore per liter (MOT/ i), pressed (prescribing formula (prescribed) 1) Calculation:
c (naOH)
m x 1 000
(V, one vs) m
In the formula:
M -— the accurate value of the quality of m -hydrogenate hydrogenate of m -benzene , The unit is the value of the volume of the volume of the unit of V -sodium hydroxide solution, the unit is milliliter (ml); ml);
M the value of the Moore quality of Potassium hydrogenate in m, the unit is G/Mol (G/MOL) lm (khceh, 0,) \u003d 204.22] o
4.2 Standard Titor hydrochloride solution
4.2.1 Preparation
Take the hydrochloric acid according to the prescribed in Table 3, note 10 00m L in water, shake it. Concentration [C (HCI)]/(mol/i) volume VML.
1
0.5
9o
{
0. 1 {.
4.2.2 calibration
According to the provisions of Table 4, it is said that the working benchmark reagent no water carbonate was burned to the constant heavy weight in the 270'c-300'C high-temperature furnace, which was dissolved in 50m L.
In the water, add 10 drops of Australphenol green, a custard red indicator, and drip to use the prepared hydrochloric acid solution until the solution changes from green to dark red, boil
2 min, and then tuck to the solution and then dark red. At the same time, do a blank test.
Table 4
The concentration of \"C (HCI)]/(m (, L, 'L)) working benchmark reagentless sodium carbonate of hydrochloric acid hydrochloric acid. 1 1.9
0. 5 0.95
0.1 0.2
Concentration kernel C (HCI) of standard titrative solution hydrochloride]. A '(HCI)
M X 1 000
(VL one VZ) m
In the formula:
M-一 一)))))))))))))) The accurate value of the quality of sodium sodium carbonate, the unit is gram (g);
v1 -The value of the volume of the hydrochloric acid solution, the unit is milliliter (ml-);
V: the value of the volume of the hydrochloric acid solution of the hydrochloric acid solution, the unit is milliliter The value of the quality, the unit is the standard titration solution of Smore (9/
4.3 Sulfuric acid
4.3. 1 Preparation
mollm (harm nayco,) \u003d 52.9 941
Aspen 5 sulfuric acid according to the specified table 5 , Slowly note 1000 ml of water, cool down, shake well.
Table 5
The concentration of the standard titration solution of sulfuric acid [合 hzso,)]/(m o l/l) {volume v/ml of sulfuric acid ] 30 [巧
12
I
I
1
1
0.5 0.1
4.3.2 calibration
According to the provisions of Table 6 Take 2700C^ 300 \u0026 quot; C High -temperature furnace burned to constant working reagent reagent reagentless sodium carbonate, dissolved in 50m L.
water, add 10 drops of Australian phenol green, a campaign liquid, prepare preparation for preparation The good sulfate solution is dripped to the solution from green to dark red, boiled
2 min, and then titer to the solution and then dark red. Do a blank test at the same time.
Table 6
Sulfuric acid standard, solubble. Concentration [· [sound Hzsoj]/(mol/IJ working reference reagent reagent no water carbonate quality ./ Only
0.5 0.1
01.95
GB/T 601-2002
Standard Titanic solution sulfuric acid. Concentration benevolence (borrow hzso,) 1, value is represented by Moore per liter (mol/l), calculated according to formula (3):
· (told HLS04, m x 1 000
(V, a V v, one V ,) M
\u0026 amp;#8943; \u0026 amp;#8943; (3) In the formula:
- The accurate value of the quality of sodium -free sodium carbonate, the unit is gram (g);
- The volume of the sulfuric acid solution, the unit is milliliter (ml);
- The value of the volume of the sulfate solution of the blank test, the unit is milliliter (ml); The value of quality, the unit is G/Mol [m (sound na, co,) \u003d 5 2.994],
4-4 sodium carbonate standard titer solution
4.4. 1 Preparation
According to the provisions of Table 7, remove sodium -free sodium carbonate, dissolved in 1 000 ml, and shake it well.
Wrap 7
The concentration of sodium carbonate standard titration solution [C (C (meteing nayco,)]/(m o l/l) The mass of sodium -free sodium carbonate m/q
4.4.2 calibration
Introduction 35. 00 m L, -40.00 m L prepared sodium carbonate solutions, plus water of water with a volume of water, plus 10 drops of citrhenol green one red
indicator liquid, and use the corresponding concentration of the corresponding concentration of hydrochloric acid specified in Table 8 The standard titration solution is titled until the solution changes from green to dark red, boiled for 2 min, after cooling
, continues to titer until the solution is dark red.
Dechat 8
The concentration of the standard titration solution of sodium carbonate
[(合 na7c0,)]/(mol/l) The volume V/ml
The concentration of the standard titration solution of the hydrochloric acid hydrochloric acid
123] [C (HCI)] eight mol/1)
1 50 1
0.1 20 0.1
The concentration of sodium carbonate standard titration solution [· (told Natco) \", the value is per liter (mol per mol (mol) /L) Means, calculate according to the formula (4):
· (told na, co,)- v ·· \u0026 amp;#8943; \u0026 amp;#8943; (4)
:
V, -The volume of the volume of standard titration solution of hydrochloric acid, the unit is milliliter (ml);
C, hydrochloride standards standard The accurate value of the concentration of the ticking solution is the accurate value of the volume of the volume of the sodium carbonate solution per liter (mol/L);
· (including K 2CRZ0 7, 1 0.'mol/L
4.5. 1 method 1
4.5. 1. 1 Preparation
Called 5g of potassium chromate, dissolved at 10 00m L, dissolved at 10 00m L, In the water, shake well.
4.5. 1.2 calibration
The amount of 35.00 m L-40.00 m L is equipped with a well-preserved potassium chromate solution, placed in the iodine bottle, add 2g of potassium iodide and 20m L sulfate soluble
GB/T 601- 2002
liquid (20%), shake it, place 10 min in the dark. Add 150 mL water (15`c-20} c), use sodium sulfate sulfate standard titer solution
Ren C (NA2S201) \u003d 0.1 mol/L \"titer, add 2 ml starch indicator solution (10 g/L) at the end of the end, and continue to digue until the solution changes from blue to
bright green. At the same time, make V. TestExamination
The concentration of the standard titration solution of potassium chromate: (sound K, CR20,)], the value is represented by Moore per liter (mol/L), calculated according to the formula (5) ) _ (V, one v) ci
v
. \"'· One' ··, ..................
V -sodium sulfate sulfate standard tither the volume value of the volume, the unit is milliliter (ml);
V one -one blank test of the volume of the volume of sodium sulfate sulfate, the unit is milliliter (ml) ;
C, the accurate value of the concentration of sodium sulfate sulfate standard titration solution, the unit is Moore per liter (mol/L);
The accurate value of the volume of the potassium chromate solution, the unit is milliliter (the unit is milliliter ( ml),
4.5.2 method 2
Called 4.9 0 G 士 ..20G has been dried to a constant working reagent potassium chromium in the electric oven at 120 ° C 2 ° C. Yu Shui,
In the 1000 ml capacity bottle, dilute to the scale.
The concentration of the standard titration solution of potassium chromate is [· (including K2Cr, 0,)], and the value is per liter of Moore (mol/ mol/ L) Represents, calculate according to the formula (6):
one · (sound
kz cr2 o,)
m
x
000
1 claw 4 [123 ] In the formula:
The accurate value of the quality of m -chromicopalate, the unit is gram (g);
V accurate value of the volume of the potassate solution, the unit is milliliter (ml); [123 ] The value of the Moore quality of the potassium chromate,
4.6 Sodium sulfate sodium sulfate standard titration solution
C (na, easy 03) 2. 0.1 m 01/i
4.6.1 with overhead [123 ] The unit is K/MoB [m (K2Cr, O,) 1 49.0311.
Called 26 G sodium sulfate (NATSZ O, · 5H20) (or 16g sodium -free sulfate sulfate) , Add 0.2 g sodium without water carbonate, dissolve in
1 000 ml of water, slowly boil for 10 min, cool. Filter after two weeks.
4.6.2 calibration
Called 0.18 g in. 120 ° C, 2 ° C, dry to constant work benchmark reagent, potassium chromate, placed in iodine bottle, dissolved in 25m 1_ water,
Add 2g of potassium iodide and 20 mL sulfate solution (20%), shake well well , 10 min are placed in the dark.ML starch indicator (10 g/L), continue to tuck to the solution from blue to bright green
. Do a blank test at the same time.
The concentration of sodium sulfate standard titration solution [C (NA2S, O,)], the value is represented by Moore per liter (mot/L), calculated by formula (7):
C (na, s, O,)
RRCX 1 000
(V, one V,) m
. two. . \u0026 amp;#8943;. two. two. .. ... ·· \u0026 amp;#8943; \u0026 amp;#8943; (7)
In the form:
The accurate value of the quality of the two -chromicopa acid, the unit is gram (g);
v , The volume of sodium sulfate solution, the unit is milliliter (ml);
V, —The value of the volume of sodium sulfate solution of the blank test, the unit is milliliter (ml);
m -chromium heavy chromium The value of the Moore quality of potassium acid, the unit is K/Mol (g/mol) [m (talked K, CR, O,) \u003d 4 9.0 31],
GB/T 601-2002
Australian standard Ding Ding solution
[(told br,) one. · 1MO LT
1 Preparation
Called 3g of potassium Australian acid and 25 G A vascularized potassium, dissolved in 1000 mi, water, shake well.
2 calibration
Obtain 35. 00 ml, -40.00 ml prepared Australian solution, placed in the iodine quantity bottle,
47 price 47
(20%), shake, shake it in the dark, in the dark, in the dark, in the dark Surveillance 5 min. Add 150 mL water (15 ° C, 20 \u0026 quot; C)
Add 2 G iodide and 5 ml of hydrochloride
, use sodium sulfate standard titration solution
[c (na2sioa) \u003d 0.1 mol/1. 1. ] Ding Ding, add 2 ml of starch indicator (10 g/L) at the end of the end, and continue to drop until the solution blue disappears.
Do a blank test at the same time.
, the concentration of the standard titration solution [· (Costing BRZ)], the value is expressed by the Moore per liter (mol/i.), Calculated by the formula (8) V, one vz) c,
v
formula:
V, one -one sodium sodium sulfate, the volume of the standard titration solution, the unit is milliliter (ml ');
v: one The value of the volume of the standard titration solution of sodium sulfate sulfate in the blank test is the accurate value of the concentration of the unit of sulfur sulfate in the standard of sodium sulfate. 1.);
The accurate value of the volume of the A -Australian solution, the unit is milliliter (ml),
4.8 Potassium Australian Titanium Discoving Solid
· (including K BRO, 1 0.'mol/L
4.8. 1 Preparation
Called 3g of potassium Australium, dissolved in 10 00m L water, Shake well.
4.8. 2 calibration
A amount of 35.00 m L-40.00 M L prepared the potassium Australization solution, placed in the iodine quantity bottle, add 2g of potassium iodide and 5m L hydrochloric acid solution
(20%), shake well, place 5 min in the dark. Add 150 ml of water (15 ° C and 20 \u0026 quot; c), and use sodium sulfate sulfate standard titration solution
kernel C (na, s20,) .. 1 MOT/L] Tit Ding, add 2 mL starch indicator solution (10 g/L) at the end of the end, and continue to titer to the blue of the solution.
At the same time, do a blank test. Ren '(Guangdong KBRO,)],
v
The value is represented by Moore per liter (MOT/L), calculated by formula (9):
· (sound kbroo_ (v, one v) c,
v
··· \u0026 amp;#8943; \u0026 amp;#8943; (9 \"
In the form:
V, sulfur sulfate standard titer volume value, the unit is milliliter ( ml);
V -one blank test sodium sulfate sulfate standard tither volume value, the unit is milliliter (ml);
C, the accurate value of the concentration of the standard titration solution of sodium sodium sulfate, The unit is Moore per liter (mol/L);
The accurate value of the volume of V-potassium solution solution, the unit is milliliter (ml),
4.9 iodine standard titration solution
· (Covenant 1 2,, 1 2, (Cost 1 2, (Cost 1 2, 1 2, One 0.'mol/L
4.9.1 Preparation
It is called 13 G iodine and 35 G iodide, dissolved in 100 mL water, diluted to 1 000 ml, shaken well, stored in a brown bottle. [123 123. ] 4.9.2
4.9.2
calibration. The reagent dioxide is placed in the iodine bottle, adding 6m L
standard titration solution \"C (naOH) \u003d 1m ol/L to solverse, add 50m L water, add 2 dropphenol 酞 酞 试 试 T liquid (10g /L), use sulfuric acid
standard titer solution: · (H2S0,) 1mo L /L] Titrate to the solution colorless, force. /L), dripped with the prepared iodine solution until the solution was light blue.Do a blank test at the same time.
碘标准滴定溶液的浓度〔·(合12)l，数值以摩尔每升(M01/1-)表示，按式(10)计算:
m X 1 000
(V, One vz) m
. .. \u0026 amp;#8943; \u0026 amp;#8943;, two. ... \u0026 amp;#8943; \u0026 amp;#8943;,. \u0026 amp;#8943; \u0026 amp;#8943; (10)
In the:
accurate value of the quality of tritenuel dioxide, the unit is gram ( 9);
V, the volume of the iodine solution, the unit is milliliter (ml);
V2 — the value of the volume of the iodine solution of the blank test, the unit is milliliter (ml);
m-. Two 0LYJ Mo. Essence Essence ,one. Essence Momo i7G/ mol) [m (buckle 6yo,) 1 49.460].
4.9.2.2 Method 2
A amount of 35.00m L-40.00 m L prefined iodine solution 150m L water (15'c^ -20c), use sulfur sulfur
sodium sulfate standard titer [c (na, s, 0,) to dick, add 2 mL starch indicator solution at the end of the end (10 g/i), continue to drop
until the blue of the solution disappears.
At the same time, the iodine test consumed by water at the same time: take 250m L water (150c-200c), add. .05m I_-0.20 m L, prepared the iodine solution
liquid and 2ml starch indicator liquid (10 g/L), use sodium sulfate to sulfate standard titration solution [c (na \u0026 quot; sz03) \u003d 0.1 mol/i] titration To the solution blue
, the color disappears.
The concentration of iodine standard titration solution [. (IZ)], the value is represented by Moore per liter (mol/l), calculated according to the formula (1 \"
(v; one recognition) c,
v3 one v,
.,. , Two .. \u0026 amp;#8943; \u0026 amp;#8943;, \u0026 amp;#8943; (11)
1-2
Type:
V, sodium sulfate standard tituration solution volume of the volume of the volume Value, the unit is milliliter (ml);
V, —The value of the volume of the standard titration solution of sodium sulfate sodium sulfate, the unit is milliliter (ml); The accurate value, the unit is Moore per liter (mol/L);
V iodine solution's volume accurate value, the unit is milliliter (mi,);
V, —— iodine solution of the plus people in the blank experiment in the blank experiment The accurate value of the volume,The unit is milliliter (LNL),
4.10 Potassium iodate standard titration solution
4.10.1 method 1
4.10-1 door formulation
Called potassium iodate specified in Table 9, dissolved in 10 00m L water, shake well.
Table 9
Potassium iodate standard titration. The quality of liquid [· (sound KIO,)]/(mol/L) potassium iodine,/9
0.3 11
0.1 3.6
4.10.1.2 calibration
According to the provisions of Table 10, take it, take it, take it, take it, take it, take the provisions of Table 10, take it. The preparation of potassium iodine solution, water, and potassium iodide is placed in the iodine quantity bottle, add 5m L hydrochloric acid solution (20%), shake
evenly, and place 5 min in the dark. Add 150 m1_ water (15'c ^-2 0'C), use sodium sulfur sulfate standard titration solution
GB/T 601-2002
[c (na, s, 03) two. 1 mol/l] Titan, add 2 ml starch indicator solution (10 g/L) at the end of the end, and continue to drop until the solution blue disappears.
Do a blank test at the same time.
Table 10
Potassium iodine standard titration solution [· (KIO,) 7/(mol/L) The volume of V/ml of water about potassium iodine solution V/ml of potassium iodate solution, the mass of potassium iodide MFG [123 ] 0.3 11.00^-13.00 20 3
0.1 35.00^-40.00} 1
Potassium iodine standard titer concentration kernels (green KIO) \", the value is expressed by Moore per liter (Moo,), it is expressed, Calculate (12) calculate:
· (KIO,) (V, One V2) c,
v
. \u0026 amp;#8943;. \u0026 amp;#8943;,. .. \u0026 amp;#8943;. two. Essence Essence ···. Two (12)
type:
V, —The value of the volume of sodium sulfate standard titration solution, the unit is milliliter (ml);
V, —— White test sodium sulfate sulfate standard titration solution The volume value, the unit is milliliter (ml);
. — The accurate value of the concentration of sodium sulfate standard titration solution is the accurate value of the volume of the unit of Moore per liter (mol/i); -2 Method 2
It is called the potassium iodine iodine that has been dried to the constant weight reagent in Table 11 in Table 11 in Table 11. Dilute to the scale in the capacity bottle.
Table 1 1
Potassium iodine standard, fixed, liquid concentration kernel C (harmonious KK \u0026 GT;) 7 eight m al/L)The quality of potassium iodine in the working benchmark/9
0.3 10.70 士 0.50
0.1.1.57 士 0. 15
The concentration of potassium iodine standard titration solution [. (Li KIO) port, the value is represented by Moore per liter (mol/L), calculated according to the formula (13):
n
· (green ki0) ...... ... \u0026 amp #8943; \u0026 amp;#8943; (13)
Make up ﹄﹄
\"3
m x 1 000
vm
type:
The quality of m -potassium potassium iodate The accurate value, the unit is gram (9);
The accurate value of the volume of the pot potassium iodine solution, the unit of the unit of ml (ml) o
Moore mass of m -iodate,
4.11 Standard Titoric Solution
The unit is G/Mol (G/MOL) LM (including KIO,) \u003d · 667],
· (True H2C2O N, One. 'Mol/L
4.11. 1 Preparation
Called 6. 49
4.11.2 calibration
A amount of 35.0 C
oxalic acid (H2C20, · 2H20), dissolved in 1 000 ml water, shake well.
ML^-40.00 mL prepares a good oxalic acid solution, add 100 mL sulfate solution (8+92), use potassium permanganate standard drop
, liquid [(sound kmn0,) \u003d 0.1 m o light L] Ding Ding, heated to about 650C at the end of the end, continue to titer to pink solution, and keep
30 s. At the same time, a blank test. ] B
. The value is represented by Moore per liter (mol/i), and calculated by the formula (14):
GB/T 601-2002
· (Township H2C0,) _ (V, One V. ) c
v
.............................................................................................................................................................................................................................................. \u0026 amp;#8943; \u0026 amp;#8943; (14)
In the form:
V,-one one-one potassium permanganate standard titration solution volume value, the unit is milliliter (ml);
V2-blank test potassium permanganate standard titer volume value, the unit is milliliter (ml);
The accurate value of the concentration of CT-potassium permanganate standard titration solution is the accurate value of Moore per liter (mol/L); 123] 4.12 Potassium permanganate standard titration solution
· (sound K MNO,)one. .1mo l/l
4.12.1 Preparation
Called 3.3 G potassium permanganate, dissolved in 1050m L water, slowly boil 15m in, cool down, place it in the dark for two weeks, and use it to deal with it.
No. 4 glass filter pot filter. Stored in a brown bottle.
The treatment of a glass filter pot refers to the glass filter in the same concentration of potassium permanganate solution with the same concentration. 5m in
4.12.2 calibration
Called 0.2 5 g at 105 ° C for 1 110 ° C electricity The sodium oxalic acid is dry to constant working reagent in the oven, which is dissolved in 100m L sulfate solution
(8 1092). Use the prepared potassium permanganate solution. Drip to the solution pink and keep
30 s. Do a blank test at the same time.
The concentration of the standard titration solution of potassium permanganate [C (clicid KMN recognition)], the value is represented by Moore per liter (mol/L), calculated according to the formula (15):
· (sound kmno,) m X 1 000
(V, one V 2) m
\u0026 amp;#8943; (15)
In the formula:
— the accurate value of the quality of sodium oxalate, the unit is gram (9);
- The value of the volume of potassium permanganate solution, the unit is milliliter (ml); 123] The value of the Moore quality of sodium oxalate, the unit is gram per Moore (g/mol [m (converge na, co,) \u003d 66-9991e
4.13 iron sulfate Nh,) 2Fe (so,) 2] \u003d 0.1 mot/l
4.13.1 Preparation
Called 40 g sulfate metal -pressed [(nh4), Fe (so,) z · 6H20], dissolved in it 300m L sulfate solution (20), add 700m i
water, shake well.
4.13.2 calibration
A amount of 35. 00 m L^-40.00 m L prepared a well-preserved sulfate and a sulfuricate. , Add 25m L oxygen -oxygen, use potassium permanganate standard titration
Ivaclc (told kmno,) \u003d 0. 1 mot/L] to the solution pink and keep 30 s. 123] The concentration of the standard titration solution of sulfate sulfate hinges {: nhozfe (so0z]}, the value is represented by Moore per liter (mol/l), according to the formula (16)
calculated:
In the form: [
. 123] v; -
C,
C benevolent (nh,), Fe (so,) z] \u003d v cl ..... \u0026 amp;#8943; \u0026 amp;#8943;,., ... · ... \u0026 amp;#8943; \u0026 amp;#8943; (16)
The value of the unit is milliliter (ml);
The accurate value of the concentration of potassium permanganate standard titration solution, the unit is Moore per liter (mol/L); The accurate value, the unit is milliliter (ml) o
GB/T 601-2002
4. 14. 14 sulfuric acid decoration (or sulfate iron) standard titration solution
c [c e (so,),] a one 0.1m ol/L, C [2 (nh,) zso, · CE (SO,),] 1 0.1 m ol/L
4.14.1 Preparation
Called 40 g sulfuric acid [CE (50. ) 2 · 4H20] {or 67g sulfuric acid decoration [2 (nh,), so, · CE (S04) 2 · 4H20]}, add
30 mL water and 28 mL sulfuric acid, plus 300 mL water, heating Solk, add 650 ml of water and shake well.
4.14.2 calibration
Get. 25G in 105, C-110 ℃ Electric oven, dry to constant working reagent reagent reagent sodium oxalic acid, dissolved in 75m L water, add
4 ml sulfate solution (20%) and 10 mi hydrochloric acid, heated to 65 '' C -700C, dripped with a well -equipped sulfuric acid bowl (or persimmon iron) solution to
solution is light yellow. Plus 0.10 ml 1,10-Filinlin Yiyia Iron Instructions turn the solution into orange-red, and continue to titrate until the solution is light blue.
Do a blank test at the same time.
The concentration of the standard titration solution of sulfuric acid decoration (or sulfuric acid) (.), The value is expressed by Moore per liter (mol/L) per liter
m x 1 00 0
, calculated by formula (17):
\"One (V non--v2: Li (17)
In the formula:
The accurate value of the quality of s sodium sodium, the unit is gram (9);
v, -Sulfate Or the value of the volume of the solution of the sulfuric acid decoration, the unit is milliliter (ml);
V, —The value of the volume of the volume of the solution of the solution of the sulfate (or sulfate) of the blank test, the unit is milliliter (ml);
~ The value of the Moore quality of sodium oxalate, the unit is gram per Moore (g/mol) [m (convergence natc, o,) \u003d 66.9 99],
4. 15 the standard titration solution of sodium tetharium tetharium. 123] 4. 15. 1 Preparation
According to the prescribed quantity of Table 12, take sodium ethyleine tetrazide, add 10 00m L water, heat dissolvedBut, shake well.
Boom 1 2
The concentration of tetramidhalcetate sodium dicerium diacerum is the quality of sodium tetramidate,/g
0.1 40
0.05 20
0.02 8
4.5.2 calibration
4. 15.2. 1 Ahyshamine tetrazide Standard Titor Edta (EDTA) \u003d 0. 1 mol/L], [ C (EDTA) \u003d 0.05 mol/L]
According to the specified quantity of Table 13, it is referred to as zinc in a high -temperature furnace at 800 ° C at a high temperature furnace of 士 士 50 ° C. Moisturize, add 2 mL hydrochloric acid solution (20%) to dissolve, add 100 mL water, adjust the solution pH to 7-8 with ammonia aquatic solution (10%), add 10 mL ammonia-
chloride buffer solution nail (pH -10) and 5 drops of chromium black T indicating liquid (5 g/L), dripped with the preparation of tetramnium tetrazhacetate diaceromicate solution to
solution from purple to pure blue. Do a blank test at the same time.
Table 13
The concentration of the standard tither tither tither tetharium titanoholytate [C (EDTA)]/(moT/L) working benchmark reagent reagent quality of zinc oxide two /K 2 /k 0.1 0.05 0.15 [123 ] Ethyramine Tetraysidicate Sodium Diathmal Standard Titanium Concentration [C (EDTA)], the value is represented by Moore per liter (MOO), calculated according to the formula (18)
:
C (EDTA)
m x 1 000
(v: one va) m
'.'. \". \u0026 amp;#8943; '·\" ... \u0026 amp;#8943; \u0026 amp;#8943; (18 )
GB/T 601--2002
In the formula:
The accurate value of the quality of the zinc oxide, the unit is gram (9);
V, —Thyshalamine tetrazide sodium sodium dicerite The volume of the solution, the unit is milliliter (ml);
V, —The value of the volume of the sodium solution of the tetharolythalmidine diacerum, the unit is milliliter (ml); The value, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39j.
4.15.2.2 Tetramnium tetramlcetate standard titer [C (EDTA) \u003d 0.02 mol/L] [ 123] Calculating. .4 2 g at 800, C -qi 50 ° C to a constant working reagent reagent zinc oxide, humidity with a small amount of water, add
3m L hydrochloric acid solution (2000) to dissolve, move people 250m L, one In the capacity bottle, dilute to the scale and shake well. Take 35.0 0m L-4 0.00 R Ni, add
70 ml of water, adjust the solution pH to 7-V8 with ammonia aquatic solution (10%), plus 10 ml ammonia one iron chloride buffer armor (pH-10) and 5 drops of inscriptions
Black T indicating liquid (5 g/L), dripping with a tied tetharium tetharium tetharotic acid diacerotic acid diacerum to the solution from purple to pure blue. At the same time, do a blank
test.
The concentration of \"C (EDTA)] of ethyleine tetrazide sodium titron is said to be represented by Moore per liter (MOT/L), calculated according to the formula (19)
:
CC (EDTA )
m x 1 000
(v: one va) m
'.'. \". \u0026 Amp;#8943; '·\" ... \u0026 amp;#8943; \u0026 amp;# 8943; (18)
GB/T 601-2002
In the formula:
The accurate value of the quality of the zinc oxide, the unit is gram (9); The value of the volume of tetraitic acid di -sodium solution, the unit is milliliter (ml);
V, —The value of the volume of the volume of the sodium solution of the sodium acetate in the blank test, the unit is milliliter (ml); The value of the Moore of zinc, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39j.
4.15.2.2 Tetramnium tetharolate standard tituration solution [C (EDTA) \u003d 0.02 mol /L]
Calculating. .4 2 g at 800, C 士 50 ° C, burned to constant working reagent zinc oxide, and humiditted with a small amount of water, plus
3m L hydrochloric acid solution ( 2000) Dissolt, migrate 250m L in a capacity bottle, dilute to the scale, shake. Take 35.0 0m L-4 0.00 R Ni, add
70 ml of water, use ammonia aquatic solution (10%) to adjust the solution pH to to to to 7-v8, plus 10 ml ammonia one iron chloride buffer solution (pH-10) and 5 drops of inscription
Black T indicating liquid (5 g/L), use the prepared ethyleine tetrazide sodium sodium diharine solution Ding to the solution from purple to pure blue. At the same time, a blank
test.
The concentration of titanohoetic acid sodium tetrabars \"C (EDTA)], the value is per liter per liter (MOT/L (MOT/L (MOT/L (MOT/L (MOT/L. ) Represents, calculate according to the formula (19)
:
c (edta)
! X Mu 2V5, 0x '..
(V Yi Biao) m
.. \u0026 Amp;# 8943; \u0026 amp;#8943;.. \u0026 Amp;#8943; \u0026 amp;#8943;. · \u0026 Amp;#8943; \u0026 amp;#8943; (19)
In the formula:
The accurate value of the quality of the zinc oxide, the unit is gram (g); );
VZ — The volume of the volume of ateramnohoethane tethane sodium solution, the unit is milliliter (ml); (ML);
The value of the Moore quality of the zinc oxide, the unit is gram per Moore (g/mol) [m (zno) \u003d 81.39] 0
level zinc chemical standard titration solution [123 123 ] C (Z N CL,) \u003d 0.1m OL/L
4.16.1 Preparation
Called 14 g to grasp zinc, dissolved in 1000m L hydrochloride (1-} -2000), shake uniform.
4.2 calibration
Called 1.4 G Place 7D after 7D through magnesium nitrate saturated solution. Among them, add 10 ml ammonia -chlorine hinge buffer solution nails (pH} 10), drip the prepared chloride solution, add 5
drop chrome black T indicator solution (5) at the end of the end, and continue Ding to the solution from blue to purple -red. Do a blank test at the same time.
The concentration of zinc chloride standard titration solution \"C (Zncl,)], the value is represented by the Moore per liter (mol/i), calculated by the formula (20):
c (znnci,)
m X 1 000
(v, one v,) m
. 123] In the formula:
M the accurate value of the quality of sodium tetrazharotide sodium, the unit is gram (g);
VL scratching the volume of the zinc solution, the unit is milliliter (ml) ;
VZ — The value of the volume of the zinc solution of a blank test grasping the zinc solution is milliliter (ml); Tittering solution of the standard titration of money (or sulfate)
C (m g,) \u003d 0.1 m ol/L, C (mgso,) \u003d 0.1 m ol/l
4.17. 1 21 g grasping magnesium (mgCl, .6h, O) [or 25g magnesium sulfate (mg50, · 7H20)], dissolved in 1000m L hydrochloride
(1+2000), put it for 1 month, after 1 month, after 1 month, Filter with glass No. 3.
GB/T 601-2002
4. 17.2 calibration
Called 1.4 g Sodium tetrazhamine tetrazhamine tetrazhamine after 7D was placed in a hydrloider saturated solution of magnesium nitrate. 10 ml ammonia one -chloride according to the buffer solution armor (P H} 10), drip with the prepared magnesium (or magnesium sulfate) solution, add 5 drops of chromium black T indicator solution at the end of
(5 stare at L. ), Continue to tick until the solution changes from blue to purple. Do a blank test at the same time.
The concentration of the standard titration solution of magnesium (or magnesium sulfate) (or magnesium sulfate), the value is represented by the Moore per liter (mol/L), calculated according to the formula (21) (V, -vi) m. ‘... ····, · ·. ·, · \u0026 Amp;#8943; (21)
In the form:
, - The accurate value of the quality of sodium ethyleine tetrazide, the unit is gram (9);
V, grabbing The value of the volume of magnesium (or magnesium sulfate) solution, the unit is milliliter (ml);
V, — The value of the blank test atmosphere of magnesium (or magnesium sulfate) solution, the unit is milliliter (ml); [[ML); [ 123] The value of the Moore mass of sodium tetrazharium acetate, the unit is gram per Moore (g/mol) [m (edta) \u003d 372.24] o
4. 18 lead. ] C benevolent P B (n O,),] \u003d 0.05m ol/L
4. 18. 1 Preparation
Called 17 G nitrate, dissolved at 10 00m L. Nitrate solution (1+20 00) In the middle, shake well.
4.18.2 calibration
The amount of 35.00 m L-40.00 m L is equipped with leading nitrite solution, plus 3m L to acetic acid (ice acetic acid) and 5g six methyl amine, plus
70 ML water and 2 drops of dilatephenol orange indicator (2 g/L,), titer \"C (EDTA) \u003d
with ethyleine tetrazide Bright yellow.
The concentration of the standard titration solution of the leading titration solution {C [PB (NO,)), the value is represented by Moore per liter (mol/L), calculated according to the formula (22):
c [pb) (NO,) 2] Two V, C,. '. \u0026 Amp;#8943; \u0026 Amp;#8943;' ...... \u0026 amp;#8943; \u0026 amp;#8943; (22)
123] VL one acetomine tetrazide standard tituration solution value of the volume of tituration solution is milliliter (ml);
C, —Thethamine tetrazharium sodium sodium dietary solution is accurate. Mol/L per liter (mol/l);
The accurate value of the volume of the V-lead solution, the unit is milliliter (ml),
4. 19. 19 sodium naval titration solution
C (n a clm) \u003d 0.1 m ol/l/l
Methods 19.1
4.19.1.1 Preparation
Called 5.9 G sodium chloride, dissolved in 10 00m L water, and shake well.
4. 19. 1.2 calibration
According to the regulations of GB /T 9725-1988. Among them, the amount of sodium scratching sodium scratching is prepared by 35.00m L-40.00M L, plus
40 ml water, 10 ml starch solution (10 g/L), and the electrode of 216 silver electrode, type 217 dual double double The salt bridge saturated sweet mercury electrode is used as a parameter
, and the titer [C (AGNO,)) is titled with silver nitric acid.
Calculate VA.
The concentration of the sodium scratching standard drip solution [C (NACI)], the value is expressed in the Moore per liter (mol/1.), calculated by the formula (23):
, , V n
C L Iva Seven 1 Little \u003d One-Two 2-
v
\"............ ..... \u0026 amp;#8943; \u0026 amp;# 8943;. \u0026 Amp;#8943; (23)
In the type:
VO nitrate standard titer volume value, the unit is milliliter (ml); The accurate value, the unit is the accurate value of the volume of the volume of the Moore per liter (mol/L)
V-sodium scratching solution, the unit is milliliter (ml),
GB/T 601-2002
4. 19.2 Method 2
Weigh 5.8 4 G ..30G has burned to a constant working reagent atmospheric sodium at a high -temperature furnace of 550 ° C 50 ° C, dissolved in water, moved
1000 people 1000 In the ML capacity bottle, dilute to the scale.
The concentration of the standard titration solution of the sodium chemical titration [C (NACI)], the value is represented by the Moore per liter (mol/L) ,,,,, M X 1 000
cllva} ,. u \u003d one-two-diced two-in one-one-
v J bamboo
'' two '\u0026 amp;#8943; \"\" \"\" ·········· \u0026 amp;#8943; \u0026 amp;#8943; (24)
In the form:
M-s L's accurate value, unitFor (g);
The accurate value of the volume of the V-sodium scratching solution, the unit is milliliter (ml); g/mol) [m (naci) \u003d 5 8.44 2],
4.20 sodium sulfate (or potassium sulfate or sulfate) standard titer solution
C (n a SC n) \u003d 0.1 M OL/L, C (KSCN) \u003d 0.1 m OL/L, C (NH, SCN) \u003d 0.1 m ol/L
4.20.1 Preparation
Called 8. 2g sodium sulfate (or 9.7 g of pot potassium sulfate or 7.9 g sulfur atmosphere), dissolved in 10 00m L water, shake well.
4.20.2 calibration
4.20.2.1 method 1
Press GB /T 9 725-19888 The regulations are determined. Among them: 0.6 g, dry to constant working reagents in a sulfuric acid dryer
silver nitrate, dissolved in 90 mL water, add 10 mL starch solution (10 g/L) and 10 ml nitrate solution (25% ), Use the 216 silver electrode to refer to
display electrode, type 217 dual -salt bridge saturated meal mercury electrode as a reference electrode, and use the prepared sodium sulfate (or potassium sulfate or sulfate) solution Drip
, and calculate the concentration of VOO
sodium sulfate (or potassium sulfate or sulfur sulfuric acid) in GB/T 9725-1988. The value is represented by Moore per liter (MOO), calculated according to the formula
(25):
one m xv, 1 m0 00., ... 123] In the formula:
Two -the accurate value of the quality of silver nitrate, the unit is gram (9);
Top — sodium sulfate (or potassium sulfate or sulfuric acid according to) the volume of the solution Value, the unit is milliliter (ml);
The value of the Moore quality of M-silver nitrate, the unit is gram per Moore (g/mol) [m (agno,)) \u003d 169.87].
According to the regulations of GB /T 9725-1988. Among them: 35.00m L^ -4 0.00m L nitrate silver standard titration solution
Ren C (Agno3) \u003d 0.1 mot/L], add 60 ml water, 10 ml starch solution (10 g/L) and 10 ML nitric acid solution (25 written), with type 216
silver electrode as indicating electrodes, type 217 dual -salt bridge saturated sweet mercury electrode as a reference electrode, and the preparation of sodium sulfenate (or potassium sulfate or sulfur sulfur Pei
Sour money) solution dropletDetermine, and calculate VO.
The concentration of the standard titration solution of VO.
sodium sulfate (or potassium sulfate or sulfuric sulfuric acid) in GB/T 9725-1988. Each liter (mol/l) represents, calculate according to the formula
(26):
.. \u0026 amp;#8943; \u0026 amp;#8943;, · ... · .......... \u0026 amp #8943; \u0026 amp;#8943; (26)
In the type:
Volidation of the volume of Vitrine standard titration solution, the unit is milliliter (ml); The accurate value of the concentration of the solution, the unit is Moore per liter (moT/L);
VO's accurate value of the volume of the volume of the solution of the solution of the solution of sodium sulfurization (or potassium sulfate or sulfate), the unit is milliliter ),
4.21 silver nitrate standard titration solution
C (a g n oo \u003d 0.1 m ol/l
gb/t 601-2002
4.21. 1 Preparation
Called 17. 5 G nitrate silver, dissolved in 10 00m L water, shake it well. The solution is stored in a brown bottle.
4.21. 2 calibration
According to the regulations of GB /T 9725-1988. -600 ° C burned to the constant
working benchmark reagent sodium chloride, dissolved in 70 mL water, add 10 mL starch solution (10 g/L.) Electrical electrode, 217
Type double-salt bridge saturated sweet mercury electrode as a reference electrode, dripped with a prepared silver nitrate solution. Press 6.2. 2 in CUB/T 9725-1988
regulations for C. [
. 123] The concentration of silver nitrate standard titration solution [C (AGNO,)], the value is represented by Moore per liter (mol/L), calculated by formula (27):
c (AGN Yao)
m x 1 000
v .m
two ''. '. ..., ... \u0026 amp;#8943; \u0026 amp;#8943; (27,
style style Middle:
The accurate value of the quality of sodium chloride
V. The value of the volume of the silver nitrate solution
M-— The value of the Moore mass of sodium chloride
4.22 Sodium nitrite standard titration The solution
4.22. 1 Preparation
According to the specified quantity of Table 14, take sodium nitrite,
, the unit is gram (9);
, the unit is milliliter (ml);
, the unit of the unit Moore(g/mol) [m (naci) \u003d 5 8. 442] o
Sodium hydroxide and sodium -free carbonate, dissolved in 1 000 mL water, and shake well.
Dechat 1 4
The concentration of sodium nitrite standard titration solution
[c (n an o,)]/(mol/i)
The quality of sodium nitrite,/9 sodium hydroxide Quality/9 Sodium -free Sodium M/9
Xing 0.15
4.22.2 calibration
According to the provisions of Table 15, it is said to be dried in an electric oven at 120 ° C to a constant weight The working benchmark reagent has no water to amctoen acid sulfonic acid, plus
nitrogen water to dissolve, add 200 ml of water and 20 mL hydrochloric acid, and install the electrode and measuring instrument (see Figure 1) according to the permanent stop dripping method (see Figure 1). About 10 mm in the dropper of the dropper of the sodium nitrite solution that is equipped with
are equipped with
. Proposal the tip of the dropper, wash the tip of the tip with a small amount of water, wash the liquid and in the human solution, continue to drop slowly, and observe the number of streams to read the number of
and pointer. The current increases, and it is no longer the end point of the titration. Pre -use
Table 15
The concentration of sodium nitrite standard titration solution
EC (n an 02)]/(mol/i)
The benchmark reagent reagent water -free alignment
The quality of benzene sulfonic acid,/9
The rest of the ammonia water,
The concentration of the standard titration solution of sodium nitrite [c (n ano,)], the value is expressed in the Moore per liter (mol/l) per liter (mol/l) , Calculate
c (nanoz, one m 瓮 黔 '', two '·············· ; (28)
The accurate value of the quality of aminozene sulfonic acid without water, the unit is gram (9);
The volume of the volume of sodium nitrite solution, the unit is milliliter (ml);
m The value of the Moore quality of aminozene sulfonic acid is not the unit. ,
GB/T 601 2002
t -.
R one -one resistance (its resistance value is similar to the critical damping resistance value of the test flow); Variable resistance, the voltage that adds to the two -electrode L is about young MV) Township
R: - resistance (2000 port);
E dry battery (L.SV);
k switch; [[
123] g-test stream meter (sensitivity is 10, A factory grid);
P platinum electrode
FIG. 1 Term Type Installation Demonstration Figure
4.23 Standard acid derivative titration solution
c (h ci o ') today 0.lmol/L
4.23. [123 ] 4 23-
Preparation
Method 1
Taking 8., 1 Holchromes, stirring the bet 5. Essence In ml acetic acid (ice acetic acid)., mix well. Drip 02 ml acetic acid, stir until
liquid is uniform. After cooling, dilute to IO0 ml with acetic acid (ice phenolic acid).
4.23.1.2 Method 2: 3)
The amount of high atmosphere of 8 7ml is taken, and mixed in the bet 59OML acetic acid (ice acetic acid). Take 01 mij, determine the quality score of the water according to the regulations of g/bt () 66 1
1988, and use the solvent to suck each time. Calculate the average value of the average of the two parallel measurement results [x,). Drinking the calculation amount is drunk and stir well. After cooling, dilute to
10o0rnl with acetic acid (ice acetic acid) and shake well.
The amount of crispy (V) in the high -grabbing solution (V), the value is expressed in milliliter (m) L, calculated according to the formula (2) 9 calculate:
v \u003d 5 32 o x w l 1 2. 8 ·· · Price · ········· ·· · · · · ··· \u0026 amp;#8943; \u0026 amp;#8943; (29)
In the form:
The quality score of the water in the high atmosphere solution is represented by%.
4.23.2 calibration
Called 0.7 59 59 ℃ 101 ℃ electric oven to dry to constant working benchmark reagent reagent reagent. In the bottle, add 50 ml acetic acid (ice acetic acid), which is warmly dissolved. Add 3 drops of crystalline purple indicator (59/i), and use the preparation of the preparation of high chloride
3) This method controls the quality score of the water in the standard titration solution of high acidic titration solutions. .O5%.
GB/T 601-2002
Dripment until the solution changes from purple to blue (slightly purple). Before use, calibration.
The concentration of the standard titration solution at the standard at the calibration temperature [C (HC (O,)], the value is represented by Moore per liter (mol/L), according to the formula (30)
calculated:
m X 1 0 0 0 ck naiv,少\u003d 一VM ......................·\u0026amp;#8943; \u0026amp;#8943;(30)[123 ] Formula:
Must be accurate for the quality of m -hydrogen acid hydrogenateReally values, the unit is gram (9);
V high -grabbing the volume of the volume of the acid solution, the unit is milliliter (ml); G/Mol Ren M (KHC H, O,) \u003d 204.22],
4.23.3 correction method
The temperature when using the standard titration solution of high -grasping acid should be the same as the temperature time time; if The temperature should be different, and the concentration of the standard for high chloroine should be titted to the value of the concentration of the liquid to the concentration of the concentration at the use of the temperature. The value is represented by Moore per liter (mol/L), calculated according to the formula (31):
C (H C10,) 1+0.0011 (t not 7t). '\"' 'Two' ......... (3 1)
In the formula:
C — the accurate value of the concentration of the standard titration solution at the standard acid standard titration solution at the calibration temperature. /L);
L — The value of the temperature of the tituration solution at a high acid standard titration solution at the time of use, the unit is the degree of degree Celsius (℃),
T -calibrate the temperature of the temperature of the standard titration solution, the unit is the degree of degrees Celsius ( ° C);
0.001 1-The standard titration solution of high acid grabbing is the volume expansion coefficient every time I change.
4.24 Atmospheric Potassium One Drunk Standard Titanium
C (KO H) 2. 0.1 M OL /L 19333334.24.1 Preparation
Called 8 G potassium hydroxide, placed in polyethylene container, add a small amount of water (about 5m L.) To dissolve, diluted with ethanol (95%) to 10 00m L.
Concerned 24 h. Use the plastic tube siphon upper layer of liquid to another polyethylene container.
4.24.2 calibration
Called 0.7 5G in 105'c^ 110 ° C as an electric oven to constant The heavy work benchmark reagent reagent dental hydrogen acid potassium is dissolved in 50m L
in water without carbon dioxide, add 2 dropphenolicon indicator (10 g/L), and drip it with a prepared potassium hydroxide one ethanol solution to the solution to solution Pink,
At the same time, do a blank test at the same time. Calculation before use.
Potassium hydroxide concentration of the standard titer of the standard titer [C (KOH)], the value is expressed by Moore per liter [mol/l), press Formula (32) calculation:
C (koh)
m x 1 000
(V2) m
formula:
M-benzide hydrogenate quality of hydrogen acid The accurate value, the unit is gram (b)+
v, -The value of the volume of the volume of potassium hydroxide, one drunk solution, the unit is milliliter [ml);
V2 -blank test The values \u200b\u200bof the volume of potassium hydroxide one ethanol solution, the unit is milliliter (ml);
The value of the Moore mass of m -hydrogenate hydrogenate in M, the unit is gram per Moore (g/mol [ M (khcsh, o,) \u003d 204.
(32)
221.
GB/T 601-2002
Appendix A
(specified appendix)
Standard at different temperatures Correct values \u200b\u200bof the volume of the titration solution
The volume of the volume of the standard titration solution at different temperatures is calculated according to Table A. 1.
Table a. 1 unit is milliliter per liter (m L/ i), [123 123 ] Sulfate solution sulfate solution
· (told HMSO,)} '(HZSO,) _
Temperature/℃
Water and
0.05 mol/l
Pymatic solution
0. 1 mol/ L;
and _ 一
0.2 mol/ L
Various water solution one
liquid 1
C (HCL) \u003d
0. 5 mol/l
hydrochloride solution
c (hci) \u003d
l mol/i
0. 5 mol/L,
Sodium hydroxide solution
c (naOh) -
0. 5 mol/i.
1M OT/i,
Sodium hydroxide solution
c (naOH) \u003d
1 mo l/l
carbonated carbonated carbonate Sodium solution
· (He Na, Co,)
\u003d 1 mol/L
Potassium hydroxide 1
Drunk solution
c (koh) \u003d
0. 1 mot/ I
q heart 0 j nj port ︺ ︺ dagger D bow ﹄﹄ 叼
Ri Dou
1
10 1.38
+1.38
+ 1.36 [123 [123 ]+1.33
+1.29
+1.23
10 1.17
10 1.10
+0.99
+0.88
+0.77
+0. 64
+0.50
+0. 34
10 0.18
0.0 0
1 0.18
1 0.38
1 0.58
1 0.80
1 1.03
1 1.26
1 1.51
1 1. 76
1 2.01
1 2.30
1 2. 58
1 2. 86
1 3.04
1. 3. 1. 47
1 3. 78
1 4. 10
+ 1.7
+ 1.7
+ 1. 6
+ 1.6
+ 1.5
+ 1.5
+1.4
+1.3
+1. 1
+1.0
+0.9
+0.7
+0.6
+d.4
+0 2
0.00
one 0.2
one 0.4
1 0.6
1 0.9
1
1 1. 4
1 1. 7
1 2.0 [0
1.0 [0 [0
1.0 [0 [0 [10
1.0 [0 [0 [10
1.0 [0 [0
1 2.0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0 [0
1.0 [0
1 2.0 [0 123] One 23
1 2.5
1 2.7
1 3.0
1 3.7
+ 1.9
+ 1.9
+ 1. 8
+ 1.8
+ 1. 7
Upper 1.6
t 1. 5
Bow ︺
+ 10.8
10 9.6
+ 1.
+ 1 .
+ 1.
+.
+0.8
+ 0.6
+0. 4
+ 0 2
+ 2
+2,
10
10 2.
+2
Up 1.
1 1.
· 1
+ 1.
10 1.
10 1.
1 0.2 [123
]一0.4
一0.?
一0.9
曰叫
-4.
一1 1
一1.4
一1.7
一2. 0[ 123] One 2 3
1 2.5
1 2.7
1 3.0
1 3.3
1 4.0
1 4.3
+ 0.6
+0. 4
t 0 2
0. 0
1 0.2
1 0.5
1 0.7
1 1. 1.0
1 2
1 1.4
1 1. 7
1 2. 0
1 2.3
1 2. 6
1 2.9
1 3.2 [123 [123 ] One 3.5
1 3 8
1
1.4
1 2. 4
10,000 2.2
+2.2
+2.1
+ 2 0
+1. 8
+ 1. 7
+ 1.5
+ 1.3
+ 1.1
+0. 9
10 0.7 [ 123]+ 0.5
one 0.2
0. 00
1 0.2
1 0 5
1 0 8
1 1.3 1 1.3
One 1.5
1 1.8
one 2.1
1 2.4
1 2.8
1
1 3.4
1 3.7
1.1
Dou 3.6
1 3 4
1 3.2
+3 0
+2.7
10
+2.3
+2.0
+1 8
+ 1.6
10 1.3
4-1.1
one 0.8
10 0.6
10 0.3
0.00
1 0.6
1 0.9 [ 123] One 1.2
1 1. 5
1 1.8
1 2.1
1 2.4
1 2.8
1 3.5
1 3.9
One 4.2
+ 3.3
Before 3 2
one 3.0
+2.8
+2.6
+ 2 4
+2. 2
+ 2.0 [ 123]+ 1. 8
+ 1.5
+ 1.3
+ 1. 1
+ (). 8
1 0.6
One 0.3
0. 0
One 0.3
1 0.6
1 0.9
1 1.2
1 5
1 1.8
1
1 2, 4
one 2.8
1 3 1
10 8.
+ 7.
Ning 6.
10 5.
-4.
1 3.
10 2.
+ l.
0. 0
one I.
1 2.2
1 3.3
1 4
One Han
1 6.
1 7_
-4 5
1 8, 5
1 9.6
1 10. 6
1 11. 6
1 12. 6
1 13. 7
1 14.8
9-10U1213N-151616171819-20 Muscle condition 23 August 1. 25 Weng 27 Shao is
-4. 5.3 -167
0, Gate
30 ship 35 intestines
Note1: The value of this table is measured at 20 ° C as the standard temperature.
Note 2: The value of the \"Ten\" and \"One\" in the table is 20 C as the boundary.The correction value of the room temperature below 20 ° C is \"+\", and the supplementary values of 20 ° C are all
.
Note 3: The usage of this table is as 1L of sulfate (AL H2S04)MOL/L] When converted from 25 ° C to 20 ° C, the volume replenishment value is one, 5m L,
The volume of 40.00 m 1 when it is converted to 20 ° C is:
v, \u003d 40. 001 1 710. -05 0 x 40.0 0 \u003d 3 9.9 4 (-1,)
13
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2026-06-21
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