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Measurements of99Tc,137Cs,237Np, Pu isotopes and241Am in sediment cores from intertidal coastal and estuarine regions in the Irish Sea

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Abstract

Long-lived radionuclides,99Tc,137Cs,237Np, Pu isotopes and241Am were determined in the long sediment cores collected from nine intertidal sites around the west Cumbria of the Irish Sea, UK. The inventories of all nuclides measured varied considerably among the sampling sites, but generally their inventories decreased with increasing distance from Sellafield. Furthermore, the inventory ratios with respect to relationship with distance from Sellafield enabled comparison of transport behavior of99Tc,137Cs,237Np and241Am compared with239,240Pu. As a consequence, the apparent fractional rate of solution transport to the intertidal sediment was found to increase as follows:99Tc>137Cs>237Np>239,240Pu≥241Am.

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Author notes

  1. J. Kuwabara

    Present address: Japan Atomic Energy Research Institute, Tokaimura, Naka-gun, 319-11, Ibaraki, Japan

  2. S. Oikawa

    Present address: Japan Chemical Analytical Center, 295-3, Sanno-cho, Inage, 263-0002, Chiba, Japan

Authors and Affiliations

  1. Low Level Radioactivity Laboratory, Kanazawa University, 923-1224, Tatsunokuchi, Ishikawa Pref., Japan

    J. Kuwabara, M. Yamamoto, S. Oikawa & K. Komura

  2. School of Ocean Sciences, University of Wales, Bangor, Menai Bridge, LL59 5EY, Gwynedd, UK

    D. J. Assinder

Authors
  1. J. Kuwabara
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  2. M. Yamamoto
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  3. S. Oikawa
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  4. K. Komura
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  5. D. J. Assinder
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Kuwabara, J., Yamamoto, M., Oikawa, S. et al. Measurements of99Tc,137Cs,237Np, Pu isotopes and241Am in sediment cores from intertidal coastal and estuarine regions in the Irish Sea. J Radioanal Nucl Chem 240, 593–601 (1999). https://doi.org/10.1007/BF02349419

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  • DOI: https://doi.org/10.1007/BF02349419

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