交流示波极谱滴定铀的研究

STUDY ON AC OSCILLOPOLAROGRAPHIC TITRATION OF URANIUM

在pH5的六次甲基四胺缓冲溶液中,用标准Zn(Ac)_2溶液反滴法测定U以Zn^(2+)在交流示波极谱曲线dE/dt=f(E)上出现切口直接指示终点。U量分析范围为1.50-22.00mg,方法回收率为99.03％-100.87％。

A simple method for alternating current oscillopolarographic titration of U with zinc ac- etate is described. In a hexamethylene-teeramine buffer solution of pH 5,the sharp Zn incisions were given on AC oscillopolarographic curves dE/dt=f(E) ,and the uranium (1. 50 -22. OOmg) could be titrated indirectly with zinc acetate. The recovery of U is 99. 03 -100.87%.