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本文在我们过去工作的基础上,进一步试验了化探样品中多种痕量元素分组分离的条件,选用高氯酸—过氧化氢溶液洗提钼、磷、钨和钒;氢溴酸溶液洗提铋、镉,铅和锂;硫酸—过氧化氢溶液洗提铀;不同浓度的盐酸洗提钴、镍、铜,锰、锌和稀土;最后用草酸铵溶液洗提钍。试用于水系沉积物样品中十四个痕量元素分析,检出限、精密度和准确度都较好。
On the basis of our past work, this paper further tests the separation conditions of various trace elements in geochemical exploration samples, using the perchloric acid-hydrogen peroxide solution to elute molybdenum, phosphorus, tungsten and vanadium; Mentioning bismuth, cadmium, lead and lithium; stripping uranium with sulfuric acid-hydrogen peroxide solution; washing cobalt, nickel, copper, manganese, zinc and rare earth with different concentrations of hydrochloric acid; finally, stripping thorium with ammonium oxalate solution. Fourteen trace elements tested in aqueous sediment samples showed good detection limits, precision and accuracy.