【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。更多还原

【Abstract】 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 H2O2 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.更多还原