Abstract

Alternating Current Anodic Stripping Voltammetric Method For Trace Determination Of Thallium

Author(s): Ravin Jugade, Christine Jeyaseelan, Arun P.Joshi

An alternating current anodic stripping voltammetric (ACASV) method has been developed for trace determination of thallium (I). The base electrolyte used is 0.05 mol L-1 EDTA at which a well-defined peak is observed with Ep at -0.39 V. Parameters like concentration of maxima suppressor, pre-electrolysis time, pre-electrolysis potential, electrode dimensions, etc have been optimized. Under optimum conditions, the detection limit was found to be 0.1 μg L-1 for Tl(I). The method is highly selective and sensitive and has been applied to the determination of thallium in spiked water, leaves, grapes and wine samples.