Sensitive electrochemical detection of fenitrothion pesticide based on self-assembled peptide-nanotubes modified disposable pencil graphite electrode
| Autor: | Betül Bozdoğan, Gulcin Bolat, Tayfun Vural, Serdar Abaci, Emir Baki Denkbaş |
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| Rok vydání: | 2018 |
| Předmět: |
Detection limit
Pencil graphite electrode General Chemical Engineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Analytical Chemistry Fenitrothion Electrochemical gas sensor Dielectric spectroscopy chemistry.chemical_compound chemistry Tap water Electrode Electrochemistry Cyclic voltammetry 0210 nano-technology Nuclear chemistry |
| Zdroj: | Journal of Electroanalytical Chemistry. 809:88-95 |
| ISSN: | 1572-6657 |
| DOI: | 10.1016/j.jelechem.2017.12.060 |
| Popis: | A novel, simple and sensitive fenitrothion (FT) s ensor 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 voltammetry techniques. The electrochemical response of the PNT/PGE was linearly proportional to the concentration of FT over the range of 0.114 μM to 1.712 μM with a lower detection limit of 0.0196 μM (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. |
| Databáze: | OpenAIRE |
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