火焰原子吸收法测定粗铜中银的应用研究

Determination of Silver in Blister Copper by AAS

本文建立了用硝酸-硫酸预处理除去大量的铜,王水溶解,火焰原子吸收法测定粗铜中银的分析方法。研究了最佳仪器工作条件和样品处理方法。在选择好的实验条件下,测定的精密度达到2%以下。与国家标准分析方法进行对照,结果无显著性差异。

This article establishes aqua fortis-sulphuric acid decompose method which carry out former treatment,the samples were decomposed with aqua regia, flame atom absorbance analyse silver in blister copper.The working parameters of instrument are determined. A method of sample decomposition is established.Under experimental conditions, the relative standard deviation is no more than 2%. The result by this method agreed well with the result of GB standard method.