Simultaneous EQCM and fluorescence detection of adsorption/desorption and oxidation for pyridoxol in aqueous KOH on a gold electrode

被引：12

作者：

Cao, ZJ ^{[1
]}

Xie, QJ ^{[1
]}

Li, M ^{[1
]}

Yao, SZ ^{[1
]}

机构：

[1] Hunan Normal Univ, Minist Educ, Key Lab Chem Biol & Tradit Chinese Med Res, Changsha 410081, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2004年 / 568卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

simultaneous EQCM-fluorescence study; pyridoxol oxidation; an electrode; alkaline solution; quantitative analysis;

D O I：

10.1016/j.jelechem.2004.02.008

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A simultaneous EQCM-fluorescence method has been proposed as a novel and informative tool for the study of the adsorption/ desorption and oxidation for vitamin B-6 (pyridoxol) at a polycrystalline An electrode in aqueous KOH. The oxidation of pyridoxol was irreversible and accompanied by a strong electrogenerated fluorescence emission peaking at 443 nm when excited at 360 nm. The adsorption and desorption of the oxidation product were found in the double layer region and were discussed by analyzing the simultaneous fluorescence and EQCM data. In addition, the voltammetrically electrogenerated fluorescence is proposed as a new and sensitive method for assay of pyridoxol with satisfactory results. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：343 / 351

页数：9

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