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Geochemical partitioning of actinides using sequential chemical extractions: Comparison to stable elements

  • Actinides in Biological and Environmental Systems
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Abstract

We have developed a sequential extraction technique for determining the geochemical partitioning of Am, Pu, and U in soils and sediments. Stable element analyses were combined with radiometric measurements to determine the most probable geochemical host phases of these actinides in reference sediment IAEA-135.241 Am results indicate an association with carbonate minerals and organic matter. The extraction profile of238U was similar to that of refractory elements Al, Ti, and K.239/240Pu data suggest a fractionation of Pu into Fe-bearing phases of varying solubility. The reproducibility of the method was quite good (replicates agreed to within 10% at a 95% confidence level).

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Authors and Affiliations

  1. National Institute of Standards and Technology, 245/C114, 20899, Gaithersburg, MD, USA

    M. K. Schultz & K. G. W. Inn

  2. Department of Oceanography, Florida State University, Tallahassee, FL, USA

    W. Burnett & G. Smith

Authors
  1. M. K. Schultz
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  2. W. Burnett
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  3. K. G. W. Inn
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  4. G. Smith
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Schultz, M.K., Burnett, W., Inn, K.G.W. et al. Geochemical partitioning of actinides using sequential chemical extractions: Comparison to stable elements. J Radioanal Nucl Chem 234, 251–256 (1998). https://doi.org/10.1007/BF02389780

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  • DOI: https://doi.org/10.1007/BF02389780

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