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目前矿石中金的分析方法,国内外均有大量资料报导,用甲基异丁基甲酮萃取原子吸收法测定金是国内外广泛采用的一种方法,但操作繁琐,大量铁、铜存在时,结果重现性差。也有资料报导用乙酸丁酯萃取原子吸收法测定金,但方法要求在盐酸介质中萃取,在萃取前必须经过繁琐手续赶除硝酸。本方法采用二苯硫脲在王水介质中能与金形成稳定的络合
At present, the analysis methods of gold in ore are widely reported both at home and abroad. Determination of gold by methyl isobutyl ketone extraction atomic absorption spectrometry is a widely used method at home and abroad. However, the operation is cumbersome. When a large amount of iron and copper exist, the result Poor reproducibility. There are also data reported by the butyl acetate extraction atomic absorption method for the determination of gold, but the method requires extraction in hydrochloric acid medium, before the extraction must go through cumbersome procedures to get rid of nitric acid. This method uses diphenylthiourea in aqua regia medium to form a stable complex with gold