Determination of zineb in tap water and tomato samples by adsorptive catalytic stripping voltammetry
Determination of zineb in tap water and tomato samples by adsorptive catalytic stripping voltammetry
This paper describes a sensitive and accurate adsorptive catalytic stripping voltammetric method for the determination of zineb (zinc ethylene-bis- dithiocarbamate) in tap water and tomato samples. The method is based on the reduction of adsorbed zineb at a hanging mercury drop electrode following its catalytic oxidation using peroxydisulfate as an oxidizing reagent. Chemical and instrumental parameters of the process were optimized.