摘要
本文研究了含氨介质中铬(Ⅲ、Ⅵ)-α,α’-联吡啶-亚硝酸钠体系的电化学行为。建立了测定痕最铬的方法。测定铬的范围为0.004～0.028μg/mL和0.04～0.23μg/mL,检测下限为2.0×10^(-3)μg/mL,用以测定生物样品中良量铬,变异系数为0.8%。
The electrochemical behavior of chromium(Ⅲ Ⅵ)-α,α-dipy-NaNO_2-NH_3·H_2O-NH_4Cl hasbeen studied. The method for determination of trace chromium has been established. The linearrange is 0.004-0. 028μg/ml and 0.04-0.28μg/ml, respectively, the detection limit is 1. 0×10^(-4)μg/ml. This method was applied to the determination of trace chromium in biological samples,the coefficient variation was 9.8%.
出处
《分析测试学报》
CAS
CSCD
1993年第5期81-84,共4页
Journal of Instrumental Analysis
关键词
催化极谱
铬
Catalytic polarography
Chromium
