Anodic Stripping Voltammetric Determination of Gold on a Polyvinylferrocene Coated Glassy Carbon Electrode

Authors : Muammer KAVANOZ, Handan GÜLCE, Attila YILDIZ

Pages : 287-298

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The anodic stripping voltammetric determination of gold was accomplished on a chemically modified glassy carbon electrode in a solution containing chloride ions. A modifying polymer, polyvinylferrocene, was coated by immersing the glassy carbon surface in its solution in methylene chloride followed by solvent evaporation. Tetrahalo complexes of gold, tetrachloroaurateinsert ignore into journalissuearticles values(III); and tetrabromoaurateinsert ignore into journalissuearticles values(III); ions, were found to be reduced to metallic gold by chemical reduction during immersion of the polymer coated electrode into the solution containing aurateinsert ignore into journalissuearticles values(III); ions. This reaction was utilized as means of preconcentration without the need for cathodic electrolysis prior to the anodic stripping of metallic gold. The effects of the preconcentration period, film thickness and the presence of Cuinsert ignore into journalissuearticles values(II); ions as possible interferants were investigated.
Keywords : Polyvinylferrocene, modified electrode, gold determination, anodic stripping voltammetry, tetrahalo complexes of gold