期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 809, 期 -, 页码 88-95出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2017.12.060
关键词
Fenitrothion; Peptide nanotubes; Organophosphorus (OP) pesticides; Environmental safety; Electrochemical sensor
资金
- General Directorate of Agricultural Research and Policies, Republic of Turkey Ministry of Food, Agriculture, Livestock [TAGEM/12/AR-GE/09]
- Research Fund for the 2211-C Doctoral Program of The Scientific and Technological Research Council of Turkey (TUBITAK)
A novel, simple and sensitive fenitrothion (FT) sensor was developed based on as-synthesized peptide nanotubes (PNTs) on modified pencil graphite electrode (PGE). This modified electrode (PNT/PGE) was characterized by SEM, electrochemical impedance spectroscopy and cyclic voltanunetry techniques. The electrochemical response of the PNT/PGE was linearly proportional to the concentration of FT over the range of 0.114 mu M to 1.712 mu M with a lower detection limit of 0.0196 mu M (S/N = 3). The sensor was also applied for the detection of fenitrothion in tap water. The recoveries for the spiked water samples were between 94.9 and 103.6%. The results mentioned above show that the novel electrochemical sensor is an ideal device for FT determination.
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