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试样用硝酸 -硫酸分解 ,试验了酸度、还原剂浓度以及黄铜中常见元素对测定结果的影响 ,砷、锑的回收率分别为 :96 %～ 10 9% ,90 %～ 93% ,砷、锑的检出限分别为 0 .19ng/ m L和 0 .31ng/ m L,砷、锑的线性范围分别为 0 .5～ 2 5 0ng/ m L 和 0 .5～ 5 0 0 ng/ m L。本法用于测定黄铜标准样品中的砷、锑 ,结果与标准值吻合
The sample was decomposed with nitric acid and sulfuric acid to test the influence of the acidity, concentration of reductant and common elements in brass on the determination results. The recoveries of arsenic and antimony were 96% -109%, 90% -93%, arsenic , The detection limits of antimony were 0.19ng / m L and 0.31ng / m L, respectively. The linear ranges of arsenic and antimony were 0.5 ~ 250ng / m L and 0.5 ~ 500ng / m L. This method is used for the determination of arsenic and antimony in brass standard samples. The results are consistent with the standard values