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本文采用汞膜电极阳极溶出伏安法测定天然水，岩石矿物中痕量铊，对测定方法的精密度， 回收率及干扰离子消除和有机共沉淀分离、富集的条件作了探讨． 在０．０８Ｍ醋酸—０．１Ｍ醋酸钠缓冲溶液（ＰＨ：４．８）和０．０１ＭＥＤＴＡ为底液的溶液中，应用汞膜 电极为工作电极，阳极溶出伏安法测定闽江水中ｐｐｔ级铊，岩矿中１０－６％的铊，其平均回收误差小 于１０％，变动系数也不超过１０％。
The determination of trace thallium in natural water and rock minerals by mercury anodic stripping voltammetry was carried out in this paper. The precision, recovery, interference ion elimination and organic coprecipitation separation and enrichment conditions were discussed. In 0.08M acetate-0.1M sodium acetate buffer solution (pH: 4.8) and 0.01MEDTA as the base solution, the mercury electrode was used as the working electrode. Anodic stripping voltammetry was used to determine the ppt level Thallium, 10-6% thallium in rock ore, the average recovery error of less than 10%, the coefficient of variation of not more than 10%.