Electrochemical determination of estrogenic compound bisphenol F in food packaging using carboxyl functionalized multi-walled carbon nanotubes modified glassy carbon electrode

•A simple rapid electrochemical detection method was developed for EDCs-BPF.•The new electrochemical sensor showed an excellent electrocatalytic activity to BPF.•The peak current of BPF was remarkably enhanced by MWCNT-COOH modified GCE.•The sensor showed high sensitivity, well reproducibility and a...

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Bibliographic Details
Published in:Food chemistry 2014-08, Vol.157, p.464-469
Main Authors: Wang, Xin, Yang, Lijun, Jin, Xudong, Zhang, Lei
Format: Article
Language:English
Subjects:
Benzhydryl Compounds - chemistry
Biological and medical sciences
Bisphenol F
Carbon - chemistry
Carboxyl functionalized multi-walled carbon nanotubes
Cyclic voltammetry
Differential pulse voltammetry
Electrochemical determination
Electrochemistry
Electrodes
Estrogens - chemistry
Food Packaging
Food toxicology
Medical sciences
Nanotubes, Carbon - chemistry
Oxidation-Reduction
Phenols - chemistry
Toxicology
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Summary:•A simple rapid electrochemical detection method was developed for EDCs-BPF.•The new electrochemical sensor showed an excellent electrocatalytic activity to BPF.•The peak current of BPF was remarkably enhanced by MWCNT-COOH modified GCE.•The sensor showed high sensitivity, well reproducibility and anti-jamming ability.•The method was satisfactorily employed to analyse BPF in food packaging materials. A simple and highly sensitive electroanalytical method for the determination of bisphenol F (BPF) was developed, which was carried out on multi-walled carbon nanotubes-COOH (MWCNT-COOH) modified glassy carbon electrode (GCE) using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The results showed that MWCNT-COOH remarkably enhanced the oxidation of BPF, which improved the anodic peak current of BPF significantly. The mechanism was oxidation of BPF lose electrons on the electrode surface via adsorption-controlled process, electrode reaction is the two electrons/two protons process. Under the optimised conditions, the oxidation peak current was proportional to BPF concentration the range from 0.12 to 6.01μgmL−1. The detection limit was 0.11μgmL−1 (S/N=3), and the relative standard deviation (R.S.D.) was 3.5% (n=9). Moreover, the MWCNT-COOH/GCE electrode showed good reproducibility, stability and anti-interference. Therefore, the proposed method was successfully applied to determine BPF in food packing and the results were satisfactory.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2014.02.079