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Voltammetric determination of uranium in rocks, soils and sediment by using the catalytic nitrate reduction

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Abstract

The differential pulse voltammetry with a hanging drop mercury electrode using catalytic reduction was used to determine uranium at trace level in rocks, soils and sediments. Some the instrumental parameters were established at optimal conditions. A softer digestion than the normal high pressure method was applied to dissolve the samples. A liquid liquid extraction procedure was used to separate the uranium from matrices. The precision and accuracy of method were evaluated, using certified Soil-7, 312 and 314 samples from IAEA which uranium concentrations lie from 2 to 60μg/g. The results are in good agreement with those obtained from other techniques and reference materials.

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Authors and Affiliations

  1. Instituto de Pesquisas Energéticas e Nucleares-CNENISP, Caixa Postal 11049, 05422-970, São Paulo, SP, Brasil

    M. I. C. Cantagallo & M. A. de Sousa

Authors
  1. M. I. C. Cantagallo
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  2. M. A. de Sousa
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Cantagallo, M.I.C., de Sousa, M.A. Voltammetric determination of uranium in rocks, soils and sediment by using the catalytic nitrate reduction. J Radioanal Nucl Chem 218, 117–118 (1997). https://doi.org/10.1007/BF02033986

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  • DOI: https://doi.org/10.1007/BF02033986

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