Electrochemical behaviour and simultaneous determination of copper(II) and palladium(II) at a dropping mercury electrode in the presence of salicylaldehyde tris(hydroxymethyl)methylamine
Abstract
The polarographic behaviour of copper(II) and palladium(II) has been studied using salicylaldehyde tris(hydroxymethyl)methylamine (ST) as a complexing agent in a 0.1 M ammonia-ammonium chloride (supporting electrolyte) medium. Well defined diffusion-controlled waves were obtained for both systems. Reversible and irreversible waves were observed for copper and palladium systems, respectively. The concentration ranges of copper(II) and palladium(II) studied were 0.15–1.6 and 0.5–1.8 mM, respectively. A method is suggested for the simultaneous determination of these metals when they are present together in pure solutions as the difference in their E½ values is sufficient for the purpose. The method has also been applied to the simultaneous determination of these metal ions in some synthetic samples and in alloys.
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