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应用方波极谱,催化波测定矿石中微量铟已有报导,但仅限以测定0.Xppm以上样品中铟,而对岩石、土壤中测定0.0Xppm铟尚不多见。虽然用阳极溶出伏安法测定铟有一些文献报导,但却只能用于某些基体较为简单的样品如锌、铝及其合金水质中铟的测定。 本文应用微分脉冲阳极溶出技术,在1.65N.KBr—0.05N-HCl—0.02％NH_2OH.HCl介质中,应用悬汞电极富集2分钟后,Cd~(2+),In~(3+),pb~(2+)的溶出峰分别为-0.64,-0.52,及-0.41伏(V_s Ag/AgCl电
It has been reported that the determination of indium in ore by square wave polarography and catalytic wave has been reported. However, the determination of indium in samples above 0.Xppm is limited to the determination of 0.0Xppm indium in rock and soil. Although some literature reports on the determination of indium by anodic stripping voltammetry, it can only be used for the determination of indium in some relatively simple matrix samples such as zinc, aluminum and their alloys. In this paper, differential pulse anodic dissolution technique was used to detect Cd2 +, In3+ in 1.65N.KBr-0.05N-HCl-0.02% NH2OH.HCl medium for 2 minutes. , pb ~ (2+) dissolution peak were -0.64, -0.52, and -0.41 V (V_s Ag / AgCl electricity