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我们在多年对金的测试工作中,认为采用TMK吸光度法测定金仍然是主要手段,并对现行分析方法作了部分改进,将热王水溶样改为冷王水浸取,用硫代米氏酮的乙酸丁酯溶液萃取,这样,既改善了劳动条件又提高了工作效率。试剂王水(1+1);盐酸溶液(1+4);活性炭;氯化钠溶液(25%);乙酸缓冲溶液(pH3.8);柠檬酸-六次甲基四胺-EDTA二钠盐混合掩蔽剂;0.01%和0.0004%硫代米氏酮(TMK)溶液;金标
In many years of gold testing work, we think that the determination of gold by TMK absorbance method is still the main means, and the existing analytical methods were partially improved, the hot aqua regia changed to cold aqua regia leaching, Ketone butyl acetate solution extraction, so that not only improves the working conditions and improve work efficiency. Reagent Aqua regia (1 + 1); Hydrochloric acid solution (1 + 4); Activated charcoal; Sodium chloride solution (25%); Acetic acid buffer solution (pH 3.8); Citric acid-hexamethylenetetramine- Salt mixture masking agent; 0.01% and 0.0004% thiomyl ketone (TMK) solution; gold standard