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The study on the determination of lead and cadmium ions in water sample with situ preparing-bismuth film electrode
Pages: 69-74
Year: Issue:  1
Journal: Journal of Yunan Normal University(Natural Sciences Edition)

Abstract: 采用阳极溶出伏安法,以铋膜电极替代汞膜电极测定水样中痕量铅和镉离子.考察并优化了同位镀铋膜测定铅、镉的条件.实验结果表明:铅和镉在铋膜电极上可得到灵敏的溶出峰,峰高和溶出电位与汞膜电极法相近,使用铋膜电极可避免使用汞膜电极带来的环境污染.当电沉积时间为5min时,铅和镉的检出限分别达1.0×10-7mol/L和5.0×10-8mol/L.同时,由于每次溶出后可方便地将铋膜溶解更新,因此,能保证各次...
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