| 选择性螯合滴定法测定镍含量 |
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| 引用本文： | 王献科,李玉萍.选择性螯合滴定法测定镍含量[J].电镀与涂饰,1995,14(3):25-28. |
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| 作者姓名： | 王献科 李玉萍 |
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| 作者单位： | 兰州市东岗镇钢厂 |
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| 摘 要： | 选择性螯合滴定法测定镍是采用过量ＥＤＴＡ螯合镍离子及其它金属离子，然后用ＳＣＮ＾－，Ｃ５Ｈ５Ｎ选择分解Ｎｉ－ＥＤＴＡ，释放出ＥＤＴＡ，用Ｐｂ（ＮＯ３）２标准溶液滴定，从而计算镍的含量。以ＸＯ－ＭＴＢ－ＣＰＢ为混合指示剂，终点变化敏锐。本法操作简便，结果准确，可用于测定电镀液和镍基合金镀层中的镍。
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| 关 键 词： | 镀镍 螯合滴定 电镀 镀液 |
Selective Chelatometric Determination of Nickel |
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| WANG Xianke,LI Yuping.Selective Chelatometric Determination of Nickel[J].Electroplating & Finishing,1995,14(3):25-28. |
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| Authors: | WANG Xianke LI Yuping |
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| Affiliation: | WANG Xianke;LI Yuping |
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| Abstract: | A simple and rapid selective chelatometric determination method is based on initial complexation of Ni2+ and other metal ions with excessive amount of EDTA and subsequent decomposition of Ni-EDTA with thiocyanate(SCN-) and pyridine (C5H5N).The liberated EDTA is titrated with Pb(NO3)2 standard,solution. A sensitive and clear end point is obtained by using XO-MTB-CPB as mixture indicator. The method may be used for determination of Nib+ in Ni-alloy plating bath and Ni-alloy deposit. |
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| Keywords: | chemical analysis nickel plating chelatometry |
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