Journal
ELECTROANALYSIS
Volume 22, Issue 19, Pages 2291-2296Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201000190
Keywords
Bis(2-hydroxyacetophenone) butane-2,3-dihydrazone (BHAB); Copper(II); Silver(I); Anodic stripping voltammetry; Chemically modified electrode
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The behavior of a modified carbon paste electrode (CPE) for simultaneous determination of copper(II) and silver(I) by anodic adsorptive stripping voltammetry (ASV) was studied. The electrode was built incorporating the bis(2-hydroxyacetophenone) butane-2,3-dihydrazone (BHAB) as a complexing agent to a Nujol-graphite base paste. The resulting electrode demonstrated linear responses over the range of Cu(II) and Ag(I) concentrations 0.1-20 and 0.01-2.0 mu M respectively. The relative standard deviation (RSD) for the determination of 5.0 mu M of both metal ions were 2.9 and 3.1 % for Cu(II) and Ag(I), respectively. The method has been applied to the analysis of copper in wheat and barley seed samples and silver in developed radiological film.
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