The Anti-Fouling Effect of Surfactants and Its Application for Electrochemical Detection of Bisphenol A
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论文类型：期刊论文
发表时间：2018-12-06
发表刊物：JOURNAL OF THE ELECTROCHEMICAL SOCIETY
收录刊物：SCIE
卷号：165
期号：16
页面范围：B814-B823
ISSN号：0013-4651
摘要：In this paper, the application of the surfactants as an anti-fouling and pre-concentrating agent has been investigated for the electrochemical determination of bisphenol A (BPA) on a carbon nanotubes (CNTs) modified glassy carbon electrode. The direct measurement, standing time and stirring time in the BPA solution were studied to repel the oxidation products on electrode surface and reduced electrode fouling to improve the sensitivity of the modified electrode during detection process. After optimization of experimental parameters, the addition of 0.2 g L-1 Tween 20 and a stirring of 30 s both contributed to weaken the fouling effect and increase the sensitivity, in comparison of direct measurement at a bare electrode and a CNTs modified electrode. The oxidation current intensity was proportional to the concentration of BPA with a wide concentration range from 1 to 100 mu mol L-1. The limit of detection was 0.3 mu mol L-1. (C) 2018 The Electrochemical Society.
发表时间：2018-12-06