容量法测定高含量金样品的研究  

Sutdy on Determination of Gold Concentration by Volumetric Analysis

作　　者：魏永春[1] 李冲[1] 王延金[1] 

机构地区：[1]北京理工大学珠海学院化工与材料学院,广东珠海519085

出　　处：《广州化工》2011年第2期97-98,共2页GuangZhou Chemical Industry

摘　　要：采用双氧水盐酸法溶金-容量法直接测定金箔中的含金量,确定了金箔样品处理的方法,在0.5g金箔样品中加入8倍理论量的双氧水和6倍理论量的浓盐酸,当反应温度为80℃时,金箔溶解完全。与王水法比较,双氧水盐酸法溶金具有安全性好、污染小、易操作等优点。所建立的容量分析方法精密度、准确度符合常量分析的要求。The gold content of gold foil was determined directly by dissolving gold with hydrogen peroxide and hydrochloric - volumetric analysis method, optimal parameters to dissolve the sample was obtained when the dosages of hydrogen peroxide and hydrochloric acid were respectively 8 and 6 times of theoretical dosage, the reaction temperature was 80℃, the dissolution of gold was 100 % after gold was added into the solution of H202 and HCl. This method of dissolving gold had such advantages as better security, less pollution, and easier operation in comparison with aqua regia method. The precision and reliability of the methods were fit for the analysis on macro - elements.

关 键 词：双氧水 盐酸 金箔 含金量 

分 类 号：TQ172.12[化学工程—水泥工业]