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Determination of Pu concentration and its isotope ratio in Japanese soils by HR-ICP-MS

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Abstract

High resolution-type ICP-MS was applied to the analysis of 239Pu and 240Pu in soil samples. The detection limit of Pu was about 0.001 pg.ml-1 (ppt) in the sample solution or about 0.0005 pg in a total sample. This method was used to determine concentrations of Pu and its isotopic ratios in several soil samples collected from different areas in Japan. Concentrations of Pu in surface soils collected from forests were significantly higher than those in soils from agricultural fields. The 240Pu/239Pu atom ratios observed were usually 0.17-0.19, except for one very low ratio (0.037) found in the Nishiyama area (Nagasaki).

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Authors and Affiliations

  1. National Institute of Radiological Sciences, Anagawa 4-9-1, Inage, Chiba, 263-8555, Japan

    Y. Muramatsu

  2. National Institute of Radiological Sciences, Anagawa 4-9-1, Inage, Chiba, 263-8555, Japan

    S. Yoshida

  3. Kaken Co, Horimachi 1044, Mito, Ibaraki, 310-0903, Japan

    A. Tanaka

Authors
  1. Y. Muramatsu
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  2. S. Yoshida
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  3. A. Tanaka
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Muramatsu, Y., Yoshida, S. & Tanaka, A. Determination of Pu concentration and its isotope ratio in Japanese soils by HR-ICP-MS. Journal of Radioanalytical and Nuclear Chemistry 255, 477–480 (2003). https://doi.org/10.1023/A:1022515912265

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