A non-enzymatic electrochemical sensor for voltammetric detection of fenitrothion pesticide

Abstract

The excessive use of organophosphorus pesticides (OPPs) results in severe environmental damage and problems with food safety. A sensitive and selective electrochemical sensor for fenitrothion (FNT) detection is crucial for environmental protection and public health. Nonenzymatic electrochemical sensor based on EDTA/poly(vanillin)/GCE was fabricated for detection of FNT. The electrochemical properties of the sensor were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). SWV results demonstrate that manufactured electrodes can be employed for sensing of harmful FNT pollutants from a wide linear range of 1.0–200 μM, LOD of 0.94 μM and a remarkable sensitivity of 0.6994 μAμM −1 , a recovery in the range of 83.10–114.36 % vegetable samples. Furthermore, even in the presence of multiple potential coexisting substances, including cationic, anionic, and organic compounds, the sensor's anti-interference ability allows for the precise detection of FNT. For the quantification of FNT, the produced sensor offers remarkable repeatability and reproducibility. This could spur innovation for remarkably accurate and dependable FNT monitoring in environmental monitoring for real-time applications. Our research, in our opinion, produced a new avenue for the development of sensors for precise and dependable electrocatalytic detecting systems that offer vegetable safety and quality for real-time environmental quality control applications.