Electrochemical Determination of Pindone in Agricultural Formulation and Cereal Samples by Differential Pulse Adsorptive Stripping Voltammetry

A sensitive method for the determination of the herbicide pindone by adsorptive stripping voltammetry using a hanging mercury drop electrode at pH 4.0 was described. The cyclic voltammogram of pindone demonstrates that compound was adsorbed at the surface of mercury electrode, and the overall reduction process was under controlled diffusion. The adsorptive peak was observed at −0.3 V, and peak response was measured with respect to pH, accumulation time, potential, and scan rate. The calibration plot was found to be linear from the concentration range 3.0×10-4.0×10 mol/L with a detection limit 2.0×10. In addition, interference of some other pesticides on pindone determination was evaluated. Finally, the developed method was potentially applied for determination of pindone in agricultural formulation and grain samples.