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Investigation of the solid phase speciation of90Sr,137Cs,239Pu and241Am in soils determined by extraction and ultra-filtration methods

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Abstract

Bio-availability of radionuclides in soil is influenced by their chemical form and association with different geo-chemical phases. The solid phase speciation of aged90Sr,137Cs,239Pu and241Am in three common agricultural soil types was investigated using separate extractions with seven reagents. Six of these are commonly used to determine radionuclide association with readily exchangeable forms, carbonates, iron and manganese oxides and organic phases. Trimethyl-chlorosilane was also included because of its ability to extract radionuclide-humate complexes from soil. The extract from this part of the study was subsequently subjected to ultra-filtration to determine the association of radionuclides with different molecular size fractions. The results from this speciation study are discussed in terms of availability for plant uptake.

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Authors and Affiliations

  1. “Frédéric Joliot-Curie” National Research Institute for Radiobiology and Radiohygiene, P.O. Box 101, H-1775, Budapest, Hungary

    G. Szabó & J. Guczi

  2. National Radiological Protection Board, OX11 ORQ, Didcot, Oxon, UK

    A. Nisbet

Authors
  1. G. Szabó
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  2. J. Guczi
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  3. A. Nisbet
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Szabó, G., Guczi, J. & Nisbet, A. Investigation of the solid phase speciation of90Sr,137Cs,239Pu and241Am in soils determined by extraction and ultra-filtration methods. J Radioanal Nucl Chem 226, 255–259 (1997). https://doi.org/10.1007/BF02063657

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  • DOI: https://doi.org/10.1007/BF02063657

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