| 连续滴定法测定钢帘线镀层中铜和锌 |
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| 引用本文： | 王京平,陈芳. 连续滴定法测定钢帘线镀层中铜和锌[J]. 冶金分析, 2005, 25(3): 61-63 |
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| 作者姓名： | 王京平 陈芳 |
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| 作者单位： | 1. 盐城师范学院化学系,江苏盐城,224002
2. 江苏兴达钢帘线股份有限公司,江苏兴化,225721 |
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| 基金项目： | 江苏省教育厅自然科学研究计划项目(04KJB150153). |
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| 摘 要： | 研究了以亚甲蓝-PAN-6S作混合指示剂,EDTA滴定法测定钢帘线镀层中的铜和锌.在pH 5.4的六次甲基四胺-盐酸缓冲介质中,以亚甲蓝-PAN-6S试剂作络合滴定指示剂,以EDTA为滴定剂进行了铜和锌的连续滴定,终点颜色变化敏锐,准确度高,铜锌比例在1∶10～10∶1范围之间相互无影响.方法可用于钢帘线镀层中铜、锌的测定,结果满意.
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| 关 键 词： | 钢帘线镀层 亚甲蓝-PAN-6S 铜 锌 络合滴定 连续测定 |
| 文章编号： | 1000-7571(2005)03-0061-03 |
| 修稿时间： | 2004-06-11 |
Determination of copper and zinc in the coating of steel wire cord by continuous titration with EDTA |
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| WANG Jing-Ping,CHEN Fang. Determination of copper and zinc in the coating of steel wire cord by continuous titration with EDTA[J]. Metallurgical Analysis, 2005, 25(3): 61-63 |
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| Authors: | WANG Jing-Ping CHEN Fang |
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| Affiliation: | WANG Jing-ping~ |
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| Abstract: | A continuous titration method for the determination of copper and zinc in the coating of steel wire cord by EDTA with methyl blue-1-(2-pyridylazo)-2-naphthol-6-sulphonic acid as the mixed indicator was studied.In the medium of hexamethylene-tetramine-hydrochloric acid at pH 5.4,the titration end points for both copper and zinc are sharp.The determination of copper and zinc do not interfere with each other when the amounts of them are in the proportion of 1:10-10:1.The method has been used for the determination of copper and zinc in the coating of steel wire cord with satisfactory results. |
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| Keywords: | coating of steel wire cord methylene blue-1-(2-pyridylazo)-2-naphthol-6-sulphonic acid copper zinc complexometric titration continuous determination |
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