期刊
MICROCHIMICA ACTA
卷 172, 期 3-4, 页码 379-386出版社
SPRINGER WIEN
DOI: 10.1007/s00604-010-0512-0
关键词
Carbon nanotubes; Linear sweep voltammetry; Bisphenol A; Determination
资金
- Key Discipline Construct Program of Hunan Province
- Open Fund Project of Key Laboratory in Hunan Universities [10 K010, 09 K099]
- Department of Science & Technology of Hengyang City [2009KG23, 2009KG50]
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.
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