Electrochemical behavior and simultaneous determination of copper(II) and cobalt(II) at a dropping mercury electrode in the presence of phenyl-2-picolylketone-2-pyridylhydrazone

Differential pulse polarography has been investigated for the simultaneous determination of copper and cobalt in the presence of phenyl-2-picolylketone-2-pyridylhydrazone, PPKPyH, as a complexing agent at pH 4.2; μ = 0.1. Well-defined diffusion-controlled waves were obtained for both systems. Revers...

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Bibliographic Details
Published in:Microchemical journal 1991-06, Vol.43 (3), p.253-257
Main Author: Abu-Zuhri, Ali Z.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Electrochemical methods
Exact sciences and technology
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Summary:Differential pulse polarography has been investigated for the simultaneous determination of copper and cobalt in the presence of phenyl-2-picolylketone-2-pyridylhydrazone, PPKPyH, as a complexing agent at pH 4.2; μ = 0.1. Well-defined diffusion-controlled waves were obtained for both systems. Reversible and irreversible waves were observed for copper and cobalt systems, respectively. A method is proposed for the simultaneous determination of these metals when they are present together in pure solution as the difference in their E 1/2 values is sufficient for this purpose. The method has also been applied to the simultaneous determination of these metal ions in some synthetic samples.
ISSN:0026-265X
1095-9149
DOI:10.1016/S0026-265X(10)80013-X