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本文研究了硫代苯甲酰苯胺(TBA)——乙酸丁酯体系萃取火焰原子吸收光谱法测定矿石中微量银的分析方法,结果表明:在2mol/L硝酸介质中以0.01mol/L TBA—乙酸丁酯能定量萃取0～6μg/ml银、用有机相直接喷雾测定,标准曲线相关系数为0.9998。本法的准确度和精确度均能满足矿石中微量银测定的要求。
In this paper, a method for the determination of trace silver in ore by flame atomic absorption spectrometry (TGA) -butyl acetate extraction system was studied. The results showed that the optimal conditions were as follows: 0.01 mol / L TBA- Butyl acetate can quantitatively extract 0 ~ 6μg / ml silver, and the direct curve of the organic phase was used for the determination. The correlation coefficient of the standard curve was 0.9998. The accuracy and accuracy of this law can meet the requirements of trace silver determination in ores.