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Determination of vanadium in biological and environmental samples by RNAA with emphasis on quality control

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Summary

In the present work an improvement of radiochemical neutron activation analysis for determination of nanogram levels of vanadium is described. The method is based on post-irradiation wet ashing and solvent extraction of vanadium with N-benzoyl-N-phenyl-hydroxylamine (BPHA) forming a violet chelate complex in strongly acidic medium. For quality assurance purposes a procedure for determination of the overall chemical yield using spectrophotometry of the V-BPHA complex is described, and possible interferences are evaluated. The procedure was applied to the determination of vanadium in reference materials and selected food samples from Slovenia.

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Authors and Affiliations

  1. Department of Environmental Sciences, Joǽef Stefan Institute, Ljubljana-1000, Slovenia

    U. Repinc

  2. Department of Environmental Sciences, Joǽef Stefan Institute, Ljubljana-1000, Slovenia

    L. Benedik

  3. Department of Environmental Sciences, Joǽef Stefan Institute, Ljubljana-1000, Slovenia

    V. Stibilj

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  1. U. Repinc
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  2. L. Benedik
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  3. V. Stibilj
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Repinc, U., Benedik, L. & Stibilj, V. Determination of vanadium in biological and environmental samples by RNAA with emphasis on quality control. J Radioanal Nucl Chem 264, 39–43 (2005). https://doi.org/10.1007/s10967-005-0672-2

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  • DOI: https://doi.org/10.1007/s10967-005-0672-2

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