Ratiometric electrochemical sensor for bisphenol A detection using a glassy carbon electrode modified with a poly(toluidine blue)/gold nanoparticle composite

被引：2

作者：

Sun, Zhiyuan ^{[1
]}

Xiao, Qin ^{[1
]}

Tang, Jingjing ^{[1
]}

Zhuang, Qianfen ^{[1
]}

Wang, Yong ^{[1
,2
,3
]}

机构：

[1] Nanchang Univ, Coll Chem, Nanchang 330031, Jiangxi, Peoples R China

[2] Nanchang Univ, State Key Lab Food Sci & Technol, Nanchang 330047, Jiangxi, Peoples R China

[3] Nanchang Univ, Jiangxi Prov Key Lab Modern Analyt Sci, Nanchang 330031, Jiangxi, Peoples R China

来源：

ANALYTICAL METHODS | 2021年 / 13卷 / 42期

基金：

中国国家自然科学基金;

关键词：

ELECTROPOLYMERIZED AZINES; SENSITIVE DETECTION; BIOSENSOR;

D O I：

10.1039/d1ay01366a

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A ratiometric electrochemical sensor for bisphenol A (BPA) detection is developed using a glassy carbon electrode modified with a poly(toluidine blue)/gold nanoparticle composite (PTB/AuNP/GCE). The ratiometric signal, namely, the oxidation peak current ratio of BPA to PTB, increases linearly with BPA concentration in the 0.2-5.0 mu M range, with a detection limit of 0.15 mu M. The electrochemical mechanism of BPA is studied at the PTB/AuNP/GCE, and the results show that BPA undergoes an electrooxidation process of two electrons and two protons at the PTB/AuNP/GCE. The proposed sensor has high sensitivity, high stability and good selectivity. The application of BPA in water samples is successfully verified using the proposed ratiometric electrochemical sensor.

引用

页码：5085 / 5092

页数：8

共 39 条

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