摘要
研究电生亚铜精密库仑滴定粗金锭中的金含量,并讨论在盐酸介质中氯离子对Au(Ⅲ)、Fe(Ⅲ)同Cu(Ⅰ)反应热力学性质的影响,用增加盐酸浓度或者用电生Au(Ⅲ)反滴定Fe(Ⅱ)的方法来消除Fe(Ⅲ)对库仑测定金的干扰作用。
A method of precise coulometric titration of gold in rough gold ingot was studied with electro-generated Cu (Ⅰ). The effects of chloride ion on thermodynamic behaviour of reaction between Au (Ⅲ), Fe (Ⅲ) and Cu (Ⅰ) were discussed. By way of rising the concentration of hydrochloric acid or back titration of Fe (Ⅱ) with electro-generated Au (Ⅲ), the interference of Fe (Ⅲ) on the determination of gold in rough gold ingot can be eliminated.
出处
《贵金属》
CAS
CSCD
北大核心
1992年第1期45-50,共6页
Precious Metals
关键词
金
库仑滴定
金属分析
Gold
Coulometric titration
Metal analysis
