Chemical oxidation of p-hydroxyphenylpyruvic acid in aqueous solution by capillary electrophoresis with an electrochemiluminescence detection system

被引：39

作者：

Chen, GN ^{[1
]}

Chi, YW

Wu, XP

Duan, JP

Li, NB

机构：

[1] Fuzhou Univ, Dept Chem, Fujian 350002, Peoples R China

[2] Fuzhou Univ, Analyt & Testing Ctr, Fujian 350002, Peoples R China

来源：

ANALYTICAL CHEMISTRY | 2003年 / 75卷 / 23期

关键词：

D O I：

10.1021/ac034451o

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A system of capillary electrophoresis with electrochemiluminescence detection (CE-ECL) together with UV spectroscopic and electrochemical methods were used to study the chemical oxidation of p-hydroxyphenylpyruvic acid (pHPP) by dissolved oxygen in aqueous solution. The pHPP was observed to be readily oxidized by dissolved oxygen in alkaline solution and yielded a compound that strongly enhanced the electrochemiluminescence of Ru(bpy)(2)(3+). This compound was separated and detected by a new CE-ECL system and revealed to be oxalate by being compared with an authentic sample of oxalate. The chemical oxidation mechanism of pHPP by dissolved oxygen was discussed in this paper.

引用

页码：6602 / 6607

页数：6

共 23 条

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