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本文研究了砷(Ⅲ)在硫酸-盐酸-溴化钾-硒(Ⅳ)体系中的极谱行为。砷(Ⅲ)在-0.53V(vs.SCE)出现灵敏的导数极谱波,检测下限达0.001μg/ml。硒(Ⅵ)的存在是获得高灵敏度砷(Ⅲ)波的关键。研究表明,该波具有吸附性质。本文还探讨了巯基棉富集分离矿石溶液中微量砷的条件,在硫酸介质中,用一次加入巯基棉的方法,有效地从有大量基体元素的矿石溶液中富集分离砷。本文经实际应用,效果很好。
In this paper, the polarographic behavior of arsenic (Ⅲ) in sulfuric acid-hydrochloric acid-potassium bromide-selenium (Ⅳ) system was studied. Arsenic (Ⅲ) at -0.53V (vs.SCE) sensitive derivative polarographic wave, the detection limit of 0.001μg / ml. The existence of selenium (Ⅵ) is the key to obtain high sensitivity arsenic (Ⅲ) wave. Studies have shown that the wave has adsorption properties. In this paper, the conditions for the enrichment and separation of trace arsenic in ore solution by sulfhydryl cotton are also discussed. In the sulfuric acid medium, the arsenic is effectively separated and enriched from the ore solution with a large amount of matrix elements by one-time addition of thiol cotton. This article by the practical application, the effect is very good.