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本文利用少量粒状活性碳的微型吸附柱动态吸附物料中微量金,拟定硫代米蚩酮(TMK)水相比色金的方法,可用于测定冶金尾矿和地质物料中ppb级的金.一、主要试剂与仪器金标液:按常法配制每毫升含金1mg的储备液.分取部分用5%王水逐级稀释成每毫升含金20μg的金标液.再用乙酸—乙酸钠缓冲液(pH3.3)配成每毫升含金2μg和100ng的工作液A和B;混合掩蔽剂:1%EDTA—20%尿素—5%柠檬酸铵—7.5%吐温-85;0.1%Fe(Ⅲ)—10%KCl的5%盐酸溶
In this paper, a small amount of granular activated carbon micro adsorption column dynamic adsorption of trace gold in the material, the preparation of thiomonium chloride (TMK) water compared gold color method can be used for the determination of metallurgical tailings and geological materials ppb gold. , The main reagents and equipment Gold standard solution: Preparation of 1mg per milliliter of gold stock solution according to the usual method.Different parts were diluted stepwise with 5% aqua regia to 20μg gold / ml gold standard solution.And then acetic acid - sodium acetate The buffer solution (pH3.3) was dosed with 2μg and 100ng working solution A and B per ml; mixed masking agent: 1% EDTA-20% urea- 5% ammonium citrate- 7.5% Tween-85; 0.1% 5% hydrochloric acid solution of Fe (III) -10% KCl