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Application of adsorptive stripping voltammetry to the simultaneous determination of bismuth and copper in the presence of nuclear fast red



Application of adsorptive stripping voltammetry to the simultaneous determination of bismuth and copper in the presence of nuclear fast red



Analytica Chimica Acta 571(1): 99-104



A sensitive and selective method for the simultaneous determination of copper and bismuth by adsorptive stripping was developed using nuclear fast red (2-anthracenesulfonic acid, 4-amino-9,10-dihydro-1,3-dihydroxy-9,10-dioxo-, monosodium salt) as selective complexing agent onto hanging mercury drop electrode. In a single scan both metals gave peaks that were distinctly separated by 85 mV allowing their determination in the presence of each other. Optimal analytical conditions were found to be: nuclear fast red concentration of 80 microM, pH of 2.8 and adsorptive potential of -300 mV versus Ag/AgCl. With accumulation time of 180s the peaks currents are proportional to concentration of copper and bismuth over the 1-100 and 5-60 ng mL(-1) range with detection limits of 0.2 and 1.2 ng mL(-1), respectively. The procedure was applied to simultaneous determination of copper and bismuth in some real samples.

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Accession: 051607922

Download citation: RISBibTeXText

PMID: 17723426

DOI: 10.1016/j.aca.2006.04.054



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