Differential pulse adsorptive stripping voltammetric determination of simeton in its formulations and vegetables.

A sensitive adsorptive stripping voltammetric method for the determination of simeton with universal buffer solution has been described. The method was based on the adsorption accumulation of simeton at a hanging mercury drop electrode. The overall reduction process is under controlled diffusion. The adsorptive peak was observed at -0.8 V vs SCE in acidic solution 2<pH<6. The peak response was characterized with respect to pH, accumulation potential, time, and scan rate. The calibration plot was found to be linear from 1.13×10(-5) to 3.5×10(-8) M with a limit of detection of 2.0×10(-8) M. Finally, the method has been applied for the determination of simeton in its formulations and vegetable samples.