摘要
本文发现,在pH4.2的H_2SO_4-NaAc缓冲溶液中,铀(Ⅵ)与邻苯三酚、草酸铵形成的多元络合物在-0.47V(vs·SCE)处产生一个灵敏的络合吸附波。铀浓度在4.2×10^(-9)2.1×10^(-5)mol/L范围内与波高呈良好的线性关系。本文拟定的方法已用于天然水及化探样中微量铀的测定。
It was found that in a supporting electrolyte of 0. 0125 mol/L H2SO4-0. 03mol/L NaAc at pH 4.2, a sensitive adsorptive complex wave of ternary complex of U (Ⅵ) with pyrogallol ammonium oxalate was obtained at -0.47 V(vs. SCE). The wave height is directly proportional to the concentration of U in the range of 4.2×10^(-9)～2.1～10^(-6)mol/L. The wave has the characteristics of adsorption. The method has been used for the determination of trace uranium in natural water and geochemical materials.
出处
《分析试验室》
CAS
CSCD
北大核心
1991年第3期24-26,共3页
Chinese Journal of Analysis Laboratory
关键词
铀
络合吸附波
邻苯三酚
草酸铵
Adsorptive complex wave
Pyrogallol
Uranium determination
