Abstract
The voltammetric characteristics of copper(II)-bis(acetylacetone) ethylendiimine, Cu(II)-BAE, at the mercury electrode in the presence of two different types of supporting electrolytes have been studied in dichloromethane. A two-electron irreversible nature for the reduction process of Cu(II)-BAE complex was observed. Preceded by a solvent extraction of Cu(II)-BAE in dichloromethane, differential pulse (DP) polarography was used for the determination of copper. The calibration graph was linear over the concentration range 1–30 μM of Cu(II); the detection limit of the method was approximately 0.8 μM. Any interference from other ions, even those extractable with dichloromethane solution of BAE, was not observed. The proposed DP method is highly selective and has been successfully applied to the determination of copper in steel.
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