Voltammetric determination of bisphenol A in food package by a glassy carbon electrode modified with carboxylated multi-walled carbon nanotubes

被引：82
|
作者：
Li, Junhua [1 ]
Kuang, Daizhi [1 ]
Feng, Yonglan [1 ]
Zhang, Fuxing [1 ]
Liu, Mengqin [1 ]
机构：
[1] Hengyang Normal Univ, Hunan Prov Coll, Dept Chem & Mat Sci, Key Lab Funct Organomet Mat, Hengyang 421008, Hunan, Peoples R China
来源：
MICROCHIMICA ACTA | 2011年 / 172卷 / 3-4期
关键词：
Carbon nanotubes; Linear sweep voltammetry; Bisphenol A; Determination; SOLID-PHASE EXTRACTION; SENSITIVE DETERMINATION; LIQUID-CHROMATOGRAPHY; ELECTROCHEMICAL SENSOR; MASS-SPECTROMETRY; WATER SAMPLES; GRAPHITE; POLYMER; FUNCTIONALIZATION; MICROEXTRACTION;
D O I：
10.1007/s00604-010-0512-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A highly sensitive and mercury-free method for determination of bisphenol A (BPA) was established using a glassy carbon electrode that was modified with carboxylated multi-walled carbon nanotubes. A sensitive oxidation peak is found at 550 mV in linear sweep voltammograms at pH 7. Based on this finding, trace levels of bisphenol A can be determined over a concentration range that is linear from 10 nM to 10(4) nM, the correlation coefficient being 0.9983, and the detection limit (S/N=3) being 5.0 nM. The method was successfully applied to the determination of BPA in food package.
引用
收藏
页码：379 / 386
页数：8
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