硒的汞膜电极示差脉冲吸附伏安法  

A Study on Differential Pulse Adsorption Voltammetry of Selenium at a Mercury Film Electrode

作　　者：孙长林[1] 王建燕[1] 李学斌[1] 尹华[1] 金文睿[2] 

机构地区：[1]浙江工学院化工系,杭州310014 [2]山东大学化学系

出　　处：《分析化学》1991年第2期139-142,共4页Chinese Journal of Analytical Chemistry

摘　　要：本文研究了在Britton-Robinson溶液(pH=2.1)中,硒(Ⅳ)-邻苯二胺体系的示差脉冲吸附伏安行为,讨论了电极过程。由硒-邻苯二胺体系产生的吸附还原峰可检测低至5.0×10^(10)mol/L的硒。硒浓度在1.0×10^(-9)～1.0×10^(-6)mol/L范围内与其峰电流呈良好的线性关系。本法可用于发样中痕量硒的测定。The differential pulse adsorption voltammetric behaviour of selenium-o-phenylenediamine system has been investigated. A well-derined adsorption reduction peak has been observed in a Britton-Robinson solution (pH=2.1). The detection limit is 5×10^(-10)mol/L for pre-concentration time of 10 min and the linear range is 1×10^(-9)～1×10^(-6)mol/L. The method has been applied to the determination of selenium in hair samples.

关 键 词：硒 吸附伏安法 测定 毛发 

分 类 号：Q581[生物学—生物化学]