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Neutron activation analysis of iodine-129 and iodine-127 in environmental samples

  • Nuclear Methods in Environmental Science
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Abstract

An analytical method for129I and127I in various environmental samples is described. The method consists of sample digestion by alkali fusion, iodine separation by solvent extraction, neutron irradiation, radiochemical purification of iodine and gamma-spectrometry. The detection limit of129I and the129I/127I ratio are 1·10−3 pCi and 1·10−9, respectively. The range of the129I/127I ratios obtained in the environmental samples collected from the Tokaimura area in Japan was between 1·10−9 and 7.9·10−6. The highest ratio was observed in pine needles followed by rain water, soil, swamp water and algae.

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Authors and Affiliations

  1. Division of Radioecology, National Institute of Radiological Sciences, Isozaki 3609, Nakaminato-shi, 311-12, Ibaraki, (Japan)

    Y. Muramatsu & Y. Ohmomo

  2. Institute of Biophysics, University of Hannover, Herrenhäuserstr. 2, D-3000, Hannover, Germany

    D. Christoffers

Authors
  1. Y. Muramatsu
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  2. Y. Ohmomo
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  3. D. Christoffers
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Muramatsu, Y., Ohmomo, Y. & Christoffers, D. Neutron activation analysis of iodine-129 and iodine-127 in environmental samples. Journal of Radioanalytical and Nuclear Chemistry, Articles 83, 353–361 (1984). https://doi.org/10.1007/BF02037149

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  • DOI: https://doi.org/10.1007/BF02037149

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