钴(Ⅱ)-2-(5′-溴-2′-吡啶偶氮)-5-二乙氨基苯酚体系的吸附伏安法  

Adsorption Voltammetry of Cobalt (Ⅱ)-2-(5′-Bromo-2′-pyridylazo)-5-diethylaminophenol System

作　　者：李锡霞 金文睿[2] 任艺兵[2] 

机构地区：[1]山东卫生学校化学组 [2]山东大学化学系,济南250100

出　　处：《分析化学》1991年第3期321-323,共3页Chinese Journal of Analytical Chemistry

摘　　要：本文研究了钴(Ⅱ)-5-Br-PADAP体系的吸附伏安法。方法的线性范围为1×10^(-9)～5×10^(-7)mol/L。,检测下限为4×10^(-10)mol/L。并将此法应用于人发中痕量钴的测定。In NH_3/NH_4Cl medium (pH=11), cobalt complex with 2-(5'-bromo-2'-pyridylazo)-5-diethylaminophenol can produce a sensitive adsorptive reduction peak at -0.72V (vs. SCE) by linear sweep adsorption voltammetry. The adsorptive voltammetric characteristics of the complex have been investigated. The detection limit and the linear range of the method are 4×10^(-10) and 1×10^(-9)～5×10^(-7)mol/L respectively. The method has been applied to the determinaton of cobalt in human hair.

关 键 词：钴 测定 吸附伏安法 5-BR-PADAP 

分 类 号：O614.812[理学—无机化学]