Voltammetric Nanosensor for Cyfluthrin based on Graphene and Poly (3-methyl) Thiophene

Poly (3-methyl) thiophene /graphene based electrochemical sensor is developed to study the electrochemical behavior of cyfluthrin with cyclic voltammetry and differential pulse voltammetry. In comparison to bare glassy carbon electrode (GCE), enhanced peak currents and reduced peak potentials are observed for the nanocomposite electrode. Differential pulse voltammetry (DPV) signals are used to optimize experimental parameters such as pH, accumulation time and potential, pulse amplitude, step potential and rest time. A differential pulse adsorptive stripping voltammetric method is developed for the determination of cyfluthrin with linear range, 1.0×10-8–1.1×10-6 M and detection limit of 2.7×10-9 M. The voltammetric procedure is effectively applied for well water samples with recoveries in the range of 92.40 to 98.30%.