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研究了用电生的亚铁氰根离子作滴定剂库仑滴定铊(Ⅲ)的可能性和最佳条件。拟定出用电势法或双铂指示电极指示终点测定铊(Ⅲ)的库仑法。该法可以分析含铊量为0.1毫克以上的试样并用于烟尘中铊的测定。有快速、准确、干扰少等优点。
The potential and optimal conditions of coulometric titration of thallium (Ⅲ) with ferrogen ions as titrant were studied. A coulometric method was developed for the determination of thallium (Ⅲ) by the potentiometric method or the double platinum indicator electrode. The method can analyze samples containing more than 0.1 mg of thallium and apply it to the determination of thallium in soot. Fast, accurate, less interference and so on.