毛细管电泳-钴钛菁碳糊修饰电极电化学催化氧化测定羟胺和巯基类化合物  

Determination of Hydroxylamines and Thiols Based on Catalytic Oxidation by Cobalt Phthalocyanine Carbon Paste Chemically Modified Electrode With Capillary Electrophoresis- Electrochemical Detection

作　　者：叶建农[1] 赵学伟[1] 方禹之[1] 

机构地区：[1]华东师范大学化学系,上海200062

出　　处：《分析化学》1997年第3期322-325,共4页Chinese Journal of Analytical Chemistry

摘　　要：本文利用自制的毛细管电泳－电化学安培检测装置，以钴钛菁碳糊修饰电极为工作。电极，在中性磷酸体系缓冲溶液中，对四种羟胺和巯基类化合物的混合物进行了分离和测定，检测下限羟胺类化合物为５．０×１０－６ｍｏｌ／Ｌ巯基类化合物为１．０×１０－５ｍｏｌ／Ｌ。对实际尿样中的半胱氨酸进行检测，结果满意。In this work, hydroxylamines and thiols were separated and detected by CE-EC method at a Co-phthalocyanine carbon paste chemically modified electrode in neutral phos- phate buffer. Detection limit for hydroxylamines and thilos is 5.0×10-8 mol/L and 1.0× 10-5 mol/L, respectively. Cysteine content in urine sample has also been successfully deter- mined.

关 键 词：CE 电化学检测 羟胺类 巯基类 半胱氨酸 

分 类 号：O613.61[理学—无机化学] Q517.03[理学—化学]