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Iodine separation procedure for the determination of129I and127I in soil by neutron activation analysis

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Abstract

A radiochemical neutron activation analytical method for the determination of129I and127I in soil samples was studied. Iodine was separated from the sample prior to the irradiation by volatilization, i.e. by combustion of the sample and trapping of the iodine in an alkaline solution together with a reducing agent. This method enables one to digest samples containing up to 100 g dry matter. The chemical yield was mostly more than 90%. After irradiation the iodine fraction was further purified by solvent extraction. The detection limit of the129I/127I ratio was 1×10−9.

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Author notes

  1. Y. Muramatsu

    Present address: Division of Life Sciences, Interational Atomic Energy Agency, Wagrammerstr. 5, 1400, Vienna, Austria

Authors and Affiliations

  1. Laboratory for Radioecology Nakaminato, National Institute of Radiological Sciences, Isozaki 3609, Nakaminato, Ibaraki, Japan

    Y. Muramatsu, S. Uchida, M. Sumiya & Y. Ohmomo

Authors
  1. Y. Muramatsu
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  2. S. Uchida
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  3. M. Sumiya
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  4. Y. Ohmomo
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Muramatsu, Y., Uchida, S., Sumiya, M. et al. Iodine separation procedure for the determination of129I and127I in soil by neutron activation analysis. Journal of Radioanalytical and Nuclear Chemistry Letters 94, 329–338 (1985). https://doi.org/10.1007/BF02168264

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  • DOI: https://doi.org/10.1007/BF02168264

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