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本文报道了Nafion汞膜修饰电极及其用于阳极溶出伏安法测定未处理尿样,水样及土样中痕量铋的研究。样品中常共存的Pb(Ⅱ)、Sb(Ⅲ )等19种阳离子及尿样中共存的有机物在实验条件下不干扰。本法不仅选择性好,而且灵敏度也较高。线性范围为2×10~(-10)～1×10~(-7)mol/L。回收率为94～105％。
In this paper, the Nafion Hg film modified electrode and its application in the determination of trace amounts of bismuth in untreated urine samples, water samples and soil samples by anodic stripping voltammetry have been reported. 19 kinds of cations, such as Pb (Ⅱ) and Sb (Ⅲ) which often coexist in the sample and the coexisting organic matters in the urine sample did not interfere under the experimental conditions. This law is not only selective, but also high sensitivity. The linear range was 2 × 10 ~ (-10) ~ 1 × 10 ~ (-7) mol / L. The recovery rate is 94 ~ 105%.