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Selective Determination of Trace Copper by Extraction-Anodic Stripping Voltammetry of Copper(II) Acetylacetonate in Nonaqueous Media

✍ Scribed by M. H. Pournaghi-Azar; M. R. Ramazani

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
596 KB
Volume
14
Category
Article
ISSN
1040-0397

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✦ Synopsis

The anodic stripping voltammetry (ASV) for the determination of trace-copper, present as copper(II) acetylacetonate, Cu(II)-AA, was developed in chloroform, using the differential pulse technique to strip the amalgamated copper from the hanging mercury drop electrode (HMDE). The experimental variables such as scan rate of electrode potential, deposition potential, deposition time and stirring speed of the solution were optimized. The linear range of the calibration plot and the limit of detection were 5 Â 10 À8 ± 10 À6 M and 1.4 Â 10 À8 M, of Cu(II), respectively. Preceded by mineralization of the sample and solvent extraction of Cu(II)-AA into chloroform, the method was used for the determination of copper in breast milk and beer as typical examples of application.

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