Abstract

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 3.0×10−9-4.0×10−7 mol/L with a detection limit 2.0×10−9. 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.