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

被引：1
|
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
收藏
页码：5085 / 5092
页数：8
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