摘要
本文利用Co(DMG)_2(NH_3)和Ni(DMG)_2(NH_3)混配化合物的吸附特性,用三阶导数卷积吸附伏安法研究了悬汞电极上几种饮料中微量Co和Ni的同时测定方法。Co、Ni的检测限分别为0.03和0.05μg/L。
Simultaneous determination of cobalt and nickel in beverages by the third derivative convolution voltammetry at a hanging mercury drop electrode has been investigated. The high sensitivity for these ions results from the adsorptive accumulation of the complexes of cobalt and nickel with dimethylglyoxime and ammonia on the mercury drop. The detection limits for Co and Ni are 0.03 and 0. 05μg/L respectively.
出处
《分析试验室》
CAS
CSCD
北大核心
1993年第4期38-40,共3页
Chinese Journal of Analysis Laboratory
关键词
钴
镍
测定
伏安法
饮料
Cobalt and nickel determination
voltammetry
beverage