CN101344488A - Analytical method and special reagent for zinc chloride content in acidic galvanizing solution - Google Patents
Analytical method and special reagent for zinc chloride content in acidic galvanizing solution Download PDFInfo
- Publication number
- CN101344488A CN101344488A CN 200810016537 CN200810016537A CN101344488A CN 101344488 A CN101344488 A CN 101344488A CN 200810016537 CN200810016537 CN 200810016537 CN 200810016537 A CN200810016537 A CN 200810016537A CN 101344488 A CN101344488 A CN 101344488A
- Authority
- CN
- China
- Prior art keywords
- solution
- zinc chloride
- special agent
- dihydrogen phosphate
- ammonium fluoride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 title claims abstract description 48
- 235000005074 zinc chloride Nutrition 0.000 title claims abstract description 27
- 239000011592 zinc chloride Substances 0.000 title claims abstract description 27
- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 23
- 238000004458 analytical method Methods 0.000 title claims abstract description 16
- 238000005246 galvanizing Methods 0.000 title abstract description 23
- 230000002378 acidificating effect Effects 0.000 title abstract description 5
- 239000000243 solution Substances 0.000 claims abstract description 54
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000012086 standard solution Substances 0.000 claims abstract description 13
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims abstract description 12
- 235000019796 monopotassium phosphate Nutrition 0.000 claims abstract description 12
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims abstract description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007853 buffer solution Substances 0.000 claims abstract description 6
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 23
- 238000007747 plating Methods 0.000 claims description 20
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 2
- 238000010790 dilution Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 9
- SXYCCJAPZKHOLS-UHFFFAOYSA-N chembl2008674 Chemical compound [O-][N+](=O)C1=CC=C2C(N=NC3=C4C=CC=CC4=CC=C3O)=C(O)C=C(S(O)(=O)=O)C2=C1 SXYCCJAPZKHOLS-UHFFFAOYSA-N 0.000 claims 1
- 238000004448 titration Methods 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 11
- 239000002994 raw material Substances 0.000 abstract description 7
- AMMWFYKTZVIRFN-UHFFFAOYSA-N sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonic acid Chemical compound [Na+].C1=CC=CC2=C(O)C(N=NC3=C4C=CC(=CC4=C(C=C3O)S(O)(=O)=O)[N+]([O-])=O)=CC=C21 AMMWFYKTZVIRFN-UHFFFAOYSA-N 0.000 abstract description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 20
- 235000011164 potassium chloride Nutrition 0.000 description 10
- 239000001103 potassium chloride Substances 0.000 description 10
- 229910017855 NH 4 F Inorganic materials 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Electroplating And Plating Baths Therefor (AREA)
Abstract
一种酸性镀锌溶液中氯化锌含量的分析方法及专用试剂，其分析方法是将被测溶液中加入WH177专用试剂、pH＝10的氨性缓冲溶液和铬黑T，然后用EDTA标准溶液滴定至溶液由红色变为蓝色为终点，最后计算出被测溶液中氯化锌的质量浓度；所说的WH177专用试剂是由氟化铵和磷酸二氢钾按一定比例配制而成。本发明解决了传统分析方法在镀锌溶液存在严重杂质干扰时对镀锌溶液中主要原料的含量测定准确度差的问题，具有实用、快速、准确等特点。An analysis method and special reagent for zinc chloride content in an acidic galvanizing solution. The analysis method is to add WH177 special reagent, ammonia buffer solution of pH=10 and chrome black T to the solution to be tested, and then use EDTA standard solution Titrate until the solution turns from red to blue as the end point, and finally calculate the mass concentration of zinc chloride in the tested solution; the WH177 special reagent is prepared in a certain proportion from ammonium fluoride and potassium dihydrogen phosphate. The invention solves the problem that the traditional analysis method has poor accuracy in determining the content of main raw materials in the galvanizing solution when there is serious impurity interference in the galvanizing solution, and has the characteristics of being practical, fast and accurate.
Description
所属技术领域Technical field
本发明属于化学分析技术领域，具体地说，是一种酸性镀锌溶液中氯化锌含量的分析方法及专用试剂。The invention belongs to the technical field of chemical analysis, in particular to an analysis method and a special reagent for zinc chloride content in an acidic zinc plating solution.
背景技术 Background technique
镀锌是金属表面处理的一种重要方法。传统的镀锌工艺如氰化镀锌、碱性镀锌等，维护相对简单，但都严重污染环境，因而大都被逐步淘汰，取而代之的是一些绿色环保的电镀工艺，其中酸性氯化钾镀锌工艺是绿色环保镀锌的主要工艺，一直倍受人们推崇。这一工艺的实施，需要对镀锌液中ZnCl2、KCl、H3BO4的含量进行分析，以便及时调整镀液中各原料的浓度，方可取得较好的电镀效果。然而由于化工原料的质量参差不齐，经常出现镀液中杂质较多的现象。在严重杂质干扰的情况下，传统的分析方法无法正确分析出镀液中各原料尤其是ZnCl2的准确含量，也就无法对镀锌工艺的正常维护起到指导作用，致使这一绿色镀锌工艺的实施出现了技术上的盲区，从而也使得一些企业不得不放弃采用这一工艺，继而重新采取其他一些高污染的镀锌工艺。Galvanizing is an important method of metal surface treatment. Traditional galvanizing processes such as cyanide galvanizing, alkaline galvanizing, etc. are relatively simple to maintain, but they seriously pollute the environment, so most of them are phased out and replaced by some green and environmentally friendly electroplating processes, among which acid potassium chloride galvanizing The process is the main process of green and environmentally friendly galvanizing, and has been highly praised by people. The implementation of this process needs to analyze the content of ZnCl 2 , KCl, and H 3 BO 4 in the galvanizing bath, so as to adjust the concentration of each raw material in the bath in time to obtain a better electroplating effect. However, due to the uneven quality of chemical raw materials, there are often more impurities in the plating solution. In the case of severe impurity interference, traditional analysis methods cannot correctly analyze the exact content of each raw material in the plating solution, especially ZnCl 2 , and cannot play a guiding role in the normal maintenance of the galvanizing process, resulting in this green galvanizing There are technical blind spots in the implementation of the process, which makes some enterprises have to give up the use of this process, and then re-adopt some other high-pollution galvanizing processes.
发明内容 Contents of the invention
本发明的目的是提供一种可分析酸性镀锌溶液中ZnCl2含量的方法，使用这种方法在镀液存在严重杂质干扰的情况下，可以准确分析出镀液中ZnCl2的含量，从而也可准确分析出镀液中其他原料的含量。The purpose of this invention is to provide a kind of method that can analyze ZnCl2 content in the acidic galvanizing solution, use this method under the situation that there is serious impurity interference in plating solution, can accurately analyze ZnCl2 content in the plating solution, thereby also It can accurately analyze the content of other raw materials in the plating solution.
本发明的另一目的是提供一种用于分析酸性镀锌溶液中ZnCl2含量的专用试剂。Another object of the present invention is to provide a special reagent for analyzing the ZnCl2 content in the acidic zinc plating solution.
为实现上述目的，本发明分析方法的技术方案是在被测溶液中加入WH177专用试剂、PH＝10的氨性缓冲溶液和铬黑T，然后用EDTA标准溶液滴定至溶液由红色变为蓝色为终点，最后计算出被测溶液中氯化锌的质量浓度；所说的WH177专用试剂是由氟化铵和磷酸二氢钾按一定比例配制而成。In order to achieve the above object, the technical scheme of the analysis method of the present invention is to add WH177 special reagent, PH=10 ammonia buffer solution and chrome black T in the tested solution, then titrate with EDTA standard solution until the solution changes from red to blue As the end point, finally calculate the mass concentration of zinc chloride in the tested solution; said WH177 special reagent is prepared by ammonium fluoride and potassium dihydrogen phosphate in a certain proportion.
本发明所说的WH177专用试剂是由氟化铵和磷酸二氢钾按0.5-1.5∶2.5-3.5的质量比例配制而成，较好的比例是1∶3；每毫升被测溶液加入WH177专用试剂的最低量为1g。测定前，被测溶液中应先加入一定量的水稀释，滴加三乙醇胺数滴后，再加入其他试剂。被测溶液中氯化锌的质量浓度可按下式计算：The WH177 special reagent of the present invention is prepared by ammonium fluoride and potassium dihydrogen phosphate according to the mass ratio of 0.5-1.5: 2.5-3.5, the better ratio is 1: 3; The minimum amount of reagent is 1 g. Before the measurement, a certain amount of water should be added to the solution to be tested for dilution, and a few drops of triethanolamine should be added before adding other reagents. The mass concentration of zinc chloride in the tested solution can be calculated as follows:
ρ＝c×v×136.3ρ=c×v×136.3
式中ρ是被测溶液中氯化锌的质量浓度(g/l)，c是EDTA标准溶液的摩尔浓度(mol/l)，v是耗用EDTA标准溶液的毫升数，136.3是氯化锌的分子量。In the formula, ρ is the mass concentration (g/l) of zinc chloride in the tested solution, c is the molar concentration (mol/l) of EDTA standard solution, v is the milliliter number of consumption EDTA standard solution, and 136.3 is zinc chloride molecular weight.
本发明专用试剂WH177技术方案的特征是这种专用试剂中含有氟化铵和磷酸二氢钾，氟化铵和磷酸二氢钾的质量比为0.5-1.5∶2.5-3.5，较好的比例为1∶3。The special reagent WH177 technical scheme of the present invention is characterized in that ammonium fluoride and potassium dihydrogen phosphate are contained in this special reagent, and the mass ratio of ammonium fluoride and potassium dihydrogen phosphate is 0.5-1.5: 2.5-3.5, preferably ratio is 1:3.
本发明特别适合于在电镀锌溶液存在严重杂质干扰的情况下，对其所含的氯化锌、氯化钾等主盐的含量进行分析。一般来说，配置镀锌溶液所用的原料中往往容易含有镁盐、钙盐等杂质，若杂质含量较高，使用传统方法对镀液中的氯化锌含量进行测定时，很难准确地找到反应终点，也就无法准确地进行测定，由此也无法对氯化钾的含量进行准确分析。本发明所使用的专用复合试剂WH177，具有掩蔽、络合杂质元素的作用，对于准确测定镀锌液中氯化锌的含量具有意想不到的效果。本发明中的专用复合试剂，是根据所选化合物的分子结构，经反复试验而得出的结果。根据试验，单独使用氟化铵或单独使用磷酸二氢钾对镀液中杂质的掩蔽效果均不理想，当二者制成复合试剂时，其效果却特别明显。The invention is particularly suitable for analyzing the content of main salts such as zinc chloride and potassium chloride contained in the zinc electroplating solution under the condition of severe impurity interference. Generally speaking, the raw materials used to configure the galvanizing solution often contain impurities such as magnesium salts and calcium salts. If the impurity content is high, it is difficult to accurately find out the zinc chloride content in the plating solution using traditional methods. Reaction end point, just can't accurately measure, thus also can't carry out accurate analysis to the content of potassium chloride. The special composite reagent WH177 used in the present invention has the function of masking and complexing impurity elements, and has an unexpected effect on accurately measuring the content of zinc chloride in the galvanizing solution. The special composite reagent in the present invention is the result obtained through repeated tests according to the molecular structure of the selected compound. According to the test, the masking effect of ammonium fluoride or potassium dihydrogen phosphate alone on the impurities in the plating solution is not ideal, but when the two are made into a composite reagent, the effect is particularly obvious.
本发明解决了传统分析方法在镀锌溶液存在严重杂质干扰的情况下对镀锌溶液中主要原料的含量测定准确度差的问题。使用本发明，即使在严重杂质干扰的情况下，也能准确、快速地测出镀锌液中氯化锌的含量，由此也使镀液中氯化钾含量的准确测定得以实现，具有实用、快速、准确等特点，经试验，在氯化钾镀锌工艺中的镀液维护、调整、控制等各个环节均取得了满意效果，起着非常重要的调控作用。本发明的问世，可使氯化钾镀锌这一绿色环保工艺得以顺利实施，从而不被污染型工艺所取代，因此，本发明也具有较好的社会效益。The invention solves the problem that the traditional analysis method has poor accuracy in determining the content of main raw materials in the galvanizing solution under the condition of severe impurity interference in the galvanizing solution. Using the present invention, even in the case of severe impurity interference, the content of zinc chloride in the galvanizing solution can be accurately and quickly measured, thereby also enabling the accurate determination of the content of potassium chloride in the galvanizing solution to be realized, which has practical , fast, accurate and other characteristics, through the test, in the bath maintenance, adjustment, control and other links in the potassium chloride galvanizing process have achieved satisfactory results, playing a very important role in regulation. The appearance of the present invention can make the potassium chloride galvanizing process, which is a green and environmentally friendly process, be implemented smoothly, so that it will not be replaced by polluting processes. Therefore, the present invention also has better social benefits.
具体实施方式 Detailed ways
实施例1、按质量比1∶3的比例准确称量一定量的NH4F和KH2PO3，混合均匀，制成WH177专用试剂。用分析天平称量ZnCl260g、KCl180g、H3BO420g及MgCl220g配制成1升模拟镀液。取1ml模拟镀液于250ml锥形瓶中，加水75ml稀释，滴加三乙醇胺数滴，再加入WH177专用试剂1g、PH＝10的缓冲溶液10ml、铬黑T少许，以0.05mol/lEDTA标准溶液滴定至溶液由红色变为蓝色为终点，共耗用EDTA标准溶液8.84ml。被测溶液中氯化锌的质量浓度可按下式计算：Example 1. Accurately weigh a certain amount of NH 4 F and KH 2 PO 3 according to the mass ratio of 1:3, and mix them uniformly to prepare the special reagent for WH177. Weigh 60g of ZnCl 2 , 180g of KCl, 20g of H 3 BO 4 and 20g of MgCl 2 with an analytical balance to prepare 1 liter of simulated plating solution. Take 1ml of simulated plating solution in a 250ml Erlenmeyer flask, add 75ml of water to dilute, add a few drops of triethanolamine, then add 1g of WH177 special reagent, 10ml of buffer solution with pH=10, a little chrome black T, and use 0.05mol/l EDTA standard solution Titrate until the solution turns from red to blue as the end point, and consume a total of 8.84ml of EDTA standard solution. The mass concentration of zinc chloride in the tested solution can be calculated as follows:
ρ＝c×v×136.3ρ=c×v×136.3
式中ρ是被测溶液中氯化锌的质量浓度(g/l)，c是EDTA标准溶液的摩尔浓度(mol/l)，v是耗用EDTA标准溶液的毫升数，136.3是氯化锌的分子量。经计算得ZnCl2的质量浓度为60.24g/l。取1ml上述模拟镀液用传统方法进行分析测定，得ZnCl2的质量浓度为106.04g/l。用本发明分析方法所测数值与传统方法所测数值进行比较，可以明显看出本发明的优势所在。其对比结果见下表：In the formula, ρ is the mass concentration (g/l) of zinc chloride in the tested solution, c is the molar concentration (mol/l) of EDTA standard solution, v is the milliliter number of consumption EDTA standard solution, and 136.3 is zinc chloride molecular weight. The mass concentration of ZnCl 2 was calculated to be 60.24g/l. Take 1ml of the above-mentioned simulated plating solution and analyze and measure it by the traditional method, and the mass concentration of ZnCl2 is 106.04g/l. Comparing the values measured by the analysis method of the present invention with the values measured by the traditional method, it can be clearly seen that the advantages of the present invention lie. The comparison results are shown in the table below:
实施例2、按质量比1.5∶3.5的比例准确称量一定量的NH4F和KH2PO3，混合均匀，制成WH177专用试剂。用分析天平准确称量ZnCl270g、KCl190g、H3BO425g及MgCl220g、CaCl210g，配制成1升模拟镀液。取1ml模拟镀液于250ml锥形瓶中，加水75ml稀释，滴加三乙醇胺数滴，再加入WH177专用试剂1.2g、PH＝10的缓冲溶液10ml、铬黑T少许，以0.05mol/lEDTA标准溶液滴定至溶液由红色变为蓝色为终点，共耗用EDTA标准溶液8.91ml。经计算得ZnCl2的质量浓度为60.72g/l。取1ml上述模拟镀液用传统方法进行分析测定，得ZnCl2的质量浓度为128.33g/l。用本发明分析方法与传统分析方法所测结果的对比情况见下表：Example 2. Accurately weigh a certain amount of NH 4 F and KH 2 PO 3 according to the mass ratio of 1.5:3.5, and mix them uniformly to prepare the special reagent for WH177. Accurately weigh 70g of ZnCl 2 , 190g of KCl, 25g of H 3 BO 4 , 20g of MgCl 2 , and 10g of CaCl 2 with an analytical balance, and prepare 1 liter of simulated plating solution. Take 1ml of simulated plating solution in a 250ml Erlenmeyer flask, add 75ml of water to dilute, add a few drops of triethanolamine, then add 1.2g of WH177 special reagent, 10ml of buffer solution with pH=10, a little chrome black T, and use 0.05mol/l EDTA standard The solution was titrated until the solution changed from red to blue as the end point, and a total of 8.91ml of EDTA standard solution was consumed. The mass concentration of ZnCl 2 was calculated to be 60.72g/l. Take 1ml of the above simulated plating solution and analyze and measure it by the traditional method, and the mass concentration of ZnCl2 is 128.33g/l. See the table below with the contrast situation of the measured result of analytical method of the present invention and traditional analytical method:
实施例3、按质量比0.8∶2.8的比例准确称量一定量的NH4F和KH2PO3，混合均匀，制成WH177专用试剂。用分析天平准确称量ZnCl280g、KCl200g、H3BO430g及MgCl220g、CaCl210g、FeSO45g，配制成1升模拟镀液。取1ml模拟镀液于250ml锥形瓶中，加水75ml稀释，滴加三乙醇胺数滴，再加入WH177专用试剂1.2g、PH＝10的缓冲溶液10ml、铬黑T少许，以0.05mol/lEDTA标准溶液滴定至溶液由红色变为蓝色为终点，共耗用EDTA标准溶液11.7ml。经计算得ZnCl2的质量浓度为79.74g/l。取1ml上述模拟镀液用传统方法进行分析测定，得ZnCl2的质量浓度为137.46g/l。用本发明分析方法与传统分析方法所测结果的对比情况见下表：Example 3. Accurately weigh a certain amount of NH 4 F and KH 2 PO 3 according to the mass ratio of 0.8:2.8, and mix them uniformly to prepare the special reagent for WH177. Accurately weigh 80g of ZnCl 2 , 200g of KCl, 30g of H 3 BO 4 , 20g of MgCl 2 , 10g of CaCl 2 and 5g of FeSO 4 with an analytical balance, and prepare 1 liter of simulated plating solution. Take 1ml of simulated plating solution in a 250ml Erlenmeyer flask, add 75ml of water to dilute, add a few drops of triethanolamine, then add 1.2g of WH177 special reagent, 10ml of buffer solution with pH=10, a little chrome black T, and use 0.05mol/l EDTA standard The solution was titrated until the solution changed from red to blue as the end point, and a total of 11.7ml of EDTA standard solution was consumed. The mass concentration of ZnCl 2 was calculated to be 79.74g/l. Take 1ml of the above simulated plating solution and analyze and measure it by the traditional method, and the mass concentration of ZnCl2 is 137.46g/l. See the table below with the contrast situation of the measured result of analytical method of the present invention and traditional analytical method:
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810016537 CN101344488A (en) | 2008-05-31 | 2008-05-31 | Analytical method and special reagent for zinc chloride content in acidic galvanizing solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810016537 CN101344488A (en) | 2008-05-31 | 2008-05-31 | Analytical method and special reagent for zinc chloride content in acidic galvanizing solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101344488A true CN101344488A (en) | 2009-01-14 |
Family
ID=40246526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810016537 Pending CN101344488A (en) | 2008-05-31 | 2008-05-31 | Analytical method and special reagent for zinc chloride content in acidic galvanizing solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101344488A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063671A (en) * | 2011-10-19 | 2013-04-24 | 沈阳理工大学 | Rapid online analysis method for main component in acidic galvanization electroplate liquid |
| CN103913457A (en) * | 2012-12-31 | 2014-07-09 | 北京有色金属与稀土应用研究所 | Method for titration of zinc content in silver-copper-zinc alloy by ethylenediamine tetraacetic acid |
| CN103954730A (en) * | 2014-05-22 | 2014-07-30 | 山东安能输送带橡胶有限公司 | Method for detecting barium and zinc in zinc-barium liquid compound stabilizer |
| CN104749318A (en) * | 2013-12-30 | 2015-07-01 | 北京有色金属与稀土应用研究所 | Method for volumetric method determination of zinc content in silver copper zinc cadmium nickel solder |
| CN105891408A (en) * | 2016-04-01 | 2016-08-24 | 中国科学院青海盐湖研究所 | Method for measuring magnesium and zinc content in alloy at same time and application thereof |
| CN108845073A (en) * | 2018-06-08 | 2018-11-20 | 广州超邦化工有限公司 | Measure the new method of Potassium Chloride Zinc Plating Chlorine in Solution zinc |
| CN112505034A (en) * | 2020-11-23 | 2021-03-16 | 山西北方机械制造有限责任公司 | Non-toxic and environment-friendly chemical analysis method for zinc ions in galvanizing solution |
-
2008
- 2008-05-31 CN CN 200810016537 patent/CN101344488A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063671A (en) * | 2011-10-19 | 2013-04-24 | 沈阳理工大学 | Rapid online analysis method for main component in acidic galvanization electroplate liquid |
| CN103913457A (en) * | 2012-12-31 | 2014-07-09 | 北京有色金属与稀土应用研究所 | Method for titration of zinc content in silver-copper-zinc alloy by ethylenediamine tetraacetic acid |
| CN104749318A (en) * | 2013-12-30 | 2015-07-01 | 北京有色金属与稀土应用研究所 | Method for volumetric method determination of zinc content in silver copper zinc cadmium nickel solder |
| CN103954730A (en) * | 2014-05-22 | 2014-07-30 | 山东安能输送带橡胶有限公司 | Method for detecting barium and zinc in zinc-barium liquid compound stabilizer |
| CN103954730B (en) * | 2014-05-22 | 2015-08-05 | 山东康迪泰克工程橡胶有限公司 | The detection method of barium and zinc in liquid barium zinc compound stabilizer |
| CN105891408A (en) * | 2016-04-01 | 2016-08-24 | 中国科学院青海盐湖研究所 | Method for measuring magnesium and zinc content in alloy at same time and application thereof |
| CN108845073A (en) * | 2018-06-08 | 2018-11-20 | 广州超邦化工有限公司 | Measure the new method of Potassium Chloride Zinc Plating Chlorine in Solution zinc |
| CN112505034A (en) * | 2020-11-23 | 2021-03-16 | 山西北方机械制造有限责任公司 | Non-toxic and environment-friendly chemical analysis method for zinc ions in galvanizing solution |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101344488A (en) | Analytical method and special reagent for zinc chloride content in acidic galvanizing solution | |
| CN103344641B (en) | Method for measuring zinc and nickel contents in zinc-nickel alloy electroplating solution | |
| CN104483311A (en) | Indicator for simultaneous measurement of calcium, barium and magnesium in silicon-calcium-barium-magnesium by adopting EDTA titration method | |
| CN102507556B (en) | Method for measuring vanadium content of silicon ferrovanadium | |
| CN103512879B (en) | The method of calcium, barium, Mg content in Si Si bond surveyed by a kind of complexometric titration connection | |
| CN103439454B (en) | Method for measuring vanadium pentoxide content by potentiometric titration | |
| CN103115920B (en) | The assay method of iron calcium ratio in a kind of iron-calcium core-spun yarn | |
| CN102495060A (en) | Analysis method of chromium content in chromium additive for aluminum alloy | |
| CN105842387A (en) | Method for measuring chloride ions in iron oxide powder through precipitation titration | |
| CN105021545A (en) | Method for measuring contents of bismuth and lead ions in tin lead bismuth alloy electroplating solution | |
| CN104122366A (en) | Method for measuring content of metal magnesium in briquetting nodulizer by using complexometric titration method | |
| CN108845073B (en) | Novel method for determining zinc chloride in potassium chloride galvanizing solution | |
| CN105136785A (en) | Metallurgical lime calcium oxide content determination method | |
| CN110702845A (en) | Titration analysis method for copper and nickel in pyrophosphate-citrate copper-nickel alloy plating solution | |
| CN108181303B (en) | Quickly measure the method for Zn content in alkaline zinc-nickel alloy plating solution | |
| CN102978596B (en) | Measure the method for galvanized sheet surface trivalent chromium coated weight | |
| CN118707027A (en) | Composite hardness analysis reagent | |
| CN106290705A (en) | Utilize the method for manganese amount in volumetric determination ferrous ammonium sulfate carbon manganese ball | |
| CN106093294A (en) | A kind of analysis method of Caddy (Cleary) in acid non-cyanide plating cadmium solution | |
| CN104155406B (en) | The assay method of ferrous ion and zinc chloride content in a kind of Plating Auxiliary of Hot Dip Galvanizing | |
| CN112730733A (en) | Method for detecting content of chloride ions in sea sand | |
| CN106645561B (en) | A kind of method of calcium ions and magnesium ions content in measurement phosphoric acid solution | |
| CN107402205B (en) | method for continuously measuring sodium hydroxide, sodium silicate and sodium carbonate in zincate galvanizing solution | |
| CN104264141A (en) | Normal-temperature thick-film zinc phosphide phosphating solution and experimental method for determining component proportions | |
| CN109085164B (en) | Method for accurately measuring vanadium content in vanadium-chromium hydrogen storage alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090114 |