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伏安法快速测定镍镀液中Cr(Ⅵ)离子的浓度
Authors
周绍民
许家园
Publication date
1 January 1994
Publisher
Abstract
根据镍镀液中Cr(VI)离子与过量fE-(2+)离子的定量反应,通过测定剩余fE-(2+)离子在铂电极上的电化学氧化电流,从而求得Cr(VI)离子的浓度.实验结果表明,镍镀液常用的添加剂和常见的金属杂质不干扰Cr(VI)离子的浓度测定.此法可检测镍镀液中Cr(VI)离子的浓度下限为4Mg/l(低于工艺允许量10Mg/l),操作简便快速.适用于电镀生产的现场监控
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Last time updated on 16/06/2016