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EDTA络合滴定测定铜合金中铝的方法具有操作简单、准确、快速和易于掌握等优点。但是,当试样中含有锡时却干扰铝的测定,使铝的分析结果偏高。为了消除锡对铝的干扰,通常都是采用在溶样中使锡生成偏锡酸沉淀而分离的方法,其效果虽然很好,但
EDTA complexometric titration of copper in the determination of aluminum is simple, accurate, fast and easy to master and so on. However, the presence of tin in the sample interferes with the determination of aluminum and results in a higher aluminum analysis. In order to eliminate the interference of tin on aluminum, it usually adopts the method of separating and forming tin by stannous acid in the sample solution. Although the effect is good,