アノーデック・ストリッピング・ボルタンメトリー(ASV)による微量元素の定量

概要

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The most currently used electrode for ASV is mercury electrode (hanging mercury drop electrode, mercury covered electrode, Pt : Hg rotating electrode, etc.). Using of these mercury electrodes, the quantitative sensitibity is very high and the determination of trace metal ions is possible. But the environmental pollutions by trace heavy-metal were indicated, and the analytical methode (using other solid electrodes in the place of mercury) of a few heavy-metals to be the source of these environmental pollutions was desirable. Supporting electrolytes for the simultaneous determination of copper, cadmium, lead, zinc were suited to HCI, KCI, NaBr, NaF, (NH_4 )_2SO_4,NH_4CI. When zinc-lead or zinc-copper contained in sample solution, intermetallic compound of zinc-lead or zinc-copper were formed and the results can be satisfactorily explained to the lower measurement value than the real value by its interference effect of intermetallic compound.
岡山理科大学の論文