MWNT/Nafion composite modified glassy carbon electrode as the voltammetric sensor for sensitive determination of 8-hydroxyquinoline in cosmetic

被引：23

作者：

Guo, Sujuan ^{[1
]}

Wu, Xianli ^{[1
]}

Zhou, Jing ^{[1
]}

Wang, Jing ^{[1
]}

Yang, Baocheng ^{[1
]}

Ye, Baoxian ^{[1
]}

机构：

[1] Zhengzhou Univ, Dept Chem, Zhengzhou 450001, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2011年 / 655卷 / 01期

基金：

中国国家自然科学基金;

关键词：

8-Hydroxyquinoline; Cosmetic; Multiwall carbon nanotube; Voltammetric sensor; PERFORMANCE LIQUID-CHROMATOGRAPHY; NANOTUBES; BIOSENSORS; ROUTE; FILM;

D O I：

10.1016/j.jelechem.2011.02.010

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this paper, a multiwall carbon nanotube/Nafion composite modified glassy carbon electrode (MWNT/Nafion/GCE) was used as a voltammetric sensor to determine 8-hydroxyquinoline (8-HQ) in cosmetic. This voltammetric sensor exhibited strong catalytic effect toward the oxidation of 8-HQ and caused an anodic peak at 0.97 V in HAc-NaAc buffer solution (0.2 M, pH 3.6). Under the optimized condition, the anodic peak current was linear with the concentration of 8-HQ in the range of 2 x 10(-8) M-1.0 x 10(-5) M. The detection limit was 9 x 10(-9) M. The practical application of MWNT/Nafion/GCE was carried out for determining 8-HQ in cosmetic sample with satisfactory results. The electrode reaction mechanism was studied by cyclic voltammetry and UV-vis spectra. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：45 / 49

页数：5

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