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Routine catalytic determination of trace amounts of cobalt in small urine samples

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Abstract

The oxidation of catechol by hydrogen peroxide, catalyzed by cobalt(II), is a highly sensitive and selective reaction. It makes it possible to analyze a small sample of urine (5.0 ml) for cobalt without the need for isolation of the analyte from the matrix. The sample is dried and dry-ashed according to a temperature programme, and the residue is dissolved in hydrochloric acid. After filtration of the solution, acetate buffer and sodium citrate are added and cobalt is determined catalytically in an aliquot of the solution, by the standard-addition method.

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Authors and Affiliations

  1. Department of Chemistry and Biochemistry, Medical Academy, High Medical Institute, Pleven, Bulgaria

    Alexander A. Alexiev & Maria G. Angelova

Authors
  1. Alexander A. Alexiev
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  2. Maria G. Angelova
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Alexiev, A.A., Angelova, M.G. Routine catalytic determination of trace amounts of cobalt in small urine samples. Mikrochim Acta 92, 243–247 (1987). https://doi.org/10.1007/BF01201846

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  • DOI: https://doi.org/10.1007/BF01201846

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