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作者于前文报导了一种适用于火焰原子吸收分析的新型氢化物连续发生器的结构、性能及其用于测定地球化学样品中铋的快速方法。本文用该发生器继续试验了于同一底液中测定岩石、矿物中锑及铋的各种最佳条件以及详细地研究了42种共存元素的干扰情况。提出在盐酸—碘化钾—抗坏血酸体系中还原并消除干扰的分析方法,效果较好,锑、铋分析下限均为10~(-4)％。
The authors previously reported the structure, properties, and a rapid method for determining bismuth in geochemical samples that are suitable for use with flame atomic absorption spectrometry. In this paper, the generator was used to test the best conditions for the determination of antimony and bismuth in rocks and minerals in the same bath. The interference of 42 coexisting elements was studied in detail. The analysis method of reducing and eliminating interference in hydrochloric acid - potassium iodide - ascorbic acid system is better, and the lower limit of antimony and bismuth analysis is 10 ~ (-4)%.