Sensitive electrochemical detection of fenitrothion pesticide based on self-assembled peptide-nanotubes modified disposable pencil graphite electrode


BOLAT G. , ABACI S. , VURAL T. , BOZDOGAN B., DENKBAŞ E. B.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, cilt.809, ss.88-95, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 809
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.jelechem.2017.12.060
  • Dergi Adı: JOURNAL OF ELECTROANALYTICAL CHEMISTRY
  • Sayfa Sayıları: ss.88-95

Özet

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.