氢化物生成原子荧光法快速测定锑精矿中的砷、汞、硒、铋和锡

Fast Determination of As,Hg,Se,Bi and Sn in Antimony Concentrate by Hydride Generation Atomic Fluorescence Spectrometry

建立了氢化物生成-原子荧光光谱快速测定锑精矿中砷汞硒铋锡的分析方法,并对溶样方法及共存元素的干扰进行了研究。结果发现,用王水溶解样品完全,通过加入酒石酸抑制基体锑的水解,不需通过化学分离,可在不同酸度介质中连续测定锑精矿中的痕量砷、汞、硒、铋和锡,并用于实际样品的测定。方法的检出限分别为:砷0.220μg/L、汞0.002μg/L、硒0.18μg/L、铋0.11μg/L、锡0.50μg/L,回收率为88%～112%。

A method for the determination of As, Hg, Se, Bi and Sn in antimony concentrates by hydride generation atomic fluorescence spectrometry（HG-AFS） was established. The effects of dissolving sample and concomitant ions were studied. The sample can be completely soluble in aqua regia. Trace arsenic, mercury, selenium, bismuth and tin of real samples were determinated without chemical seperation in the medium with different acidities by adding tartaric acid to inhibit the hydrolysis of antimony. The detection limits were 0. 22 μg/L, 0. 002 μg/L, 0. 18 μg/L, 0. 11 μg/L and 0. 50 μg/L for As, Hg, Se, Bi and Sn, respectively. The recoveries of the 5 elements were from 88% to 112%.