2-(3'-Chlorobiphenyl-3-yl)-4,6-diphenyl-1,3,5-triazine
CAS Number:
1443049-83-9
Molecular Formula:
C27H18ClN3
Rapid hydrolysis and electrochemical detection of trace carbofuran at a disposable heated screen-printed carbon electrode
Literature Information
Publication Date
2008-09-04
DOI
10.1039/B806750C
Impact Factor
4.616
Authors
Hang Wei, Jian-Jun Sun, Yan-Min Wang, Xiao Li, Guo-Nan Chen
View Original
Abstract
A disposable heated screen-printed carbon electrode (HSPCE) is successfully fabricated. It demonstrates rapid responses to electrical heating and is easily elevated above the water boiling point by a high frequency alternating current. The temperature rise at the HSPCE was found to be strongly dependent on the square of the heating current and the electrode width. Carbofuran (CAF) could be rapidly hydrolyzed to carbofuran phenol at the HSPCE with raised temperature, and then determined at the same electrode at room temperature by differential potential voltammetry (DPV). The factors influencing the detection were examined, including pH, hydrolytic temperature and heating time. Under the optimum conditions, the detection linear range of CAF was from 4.0 × 10−7 to 4.0 × 10−4 mol L−1 and the detection limit was 5.0 × 10−8 mol L−1 (S/N = 3). This method was successfully applied to the analysis of CAF residues in real samples (spiked water, soil and vegetables), and satisfactory recoveries were obtained.
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