【摘要】 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％。更多还原

【Abstract】 A method of anodic-stripping voltammetry is proposed to determine trace thallium in ore and in natural water with mercury film electrode. The pree- cision and recovery of this method, and the elimination of interference ions are studied. At the same time, the conditions of separation and concentration of organic co-precipitation are also dealt with. In 0.08M HAc-0.1M NaAc buffer solution and 0.01M EDTA solution, using mercury film electrode as work electrode, PPT thallium in Min-River water and 10-6 % thallium in ore are determined by anodic-stripping voltamme- try. The average of their errors of recovery is less than 10%, variation coeffi- cient is also less than 10%.更多还原