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Rapid determination of nickel content in nickel plating baths by square wave vlotammetry
Author(s): 
Pages: 39-40,42
Year: Issue:  4
Journal: ELECTROPLATING & FINISHING

Keyword:  方波伏安法;
Abstract: 由于利用传统方法测定镀镍液中的镍含量时共存离子的干扰不易消除,在此采用方波伏安法进行测定.阐述了该方法的原理,探讨了试验条件、共存离子对测量结果的影响.结果发现,在pH=10.0的NH3*H2O-NH4Cl缓冲液中以三乙醇胺为掩蔽剂,镍(Ⅱ)于-1.12 V(vs SCE)出现极谱峰,在镍(Ⅱ)浓度为2~20 g/L范围内峰电流与镍(Ⅱ)浓度成线性关,镍(Ⅱ)检出限为0.5 mg/L.该方法简单、快速、准确度和灵敏度高,适用于微量镍的测定.
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