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Radiochemical studies of iodine behaviour under conditions relevant to nuclear reactor accidents

  • Applications of Radioanalytical Methods to Geological and Environmental Science
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Abstract

Radiochemical methods are quite suitable for studying the behaviour of radioiodine under the dilute conditions relevant to nuclear reactor accidents. Species selective adsorbents are able to distinguish between various inorganic and organic gas-phase iodine species. A solvent extraction procedure for determining aqueous phase organic iodide, free iodine, I− and IO −3 fractions has been investigated and found to be valuable, although large inaccuracies in the separation of I− and IO −3 can occur for solutions of pH above 10. The extraction of potentially-volatile species in the aqueous phase gives a measure of iodine species volatility consistent with observed values of the partition coefficient. Indirect measurement suggest that the partition coefficient of HOI at room temperature exceeds 30,000.

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Authors and Affiliations

  1. Department of Chemical Engineering, University of Toronto, M5S 1A4, Toronto, Canada

    G. J. Evans & R. E. Jervis

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  1. G. J. Evans
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  2. R. E. Jervis
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Evans, G.J., Jervis, R.E. Radiochemical studies of iodine behaviour under conditions relevant to nuclear reactor accidents. Journal of Radioanalytical and Nuclear Chemistry, Articles 161, 121–133 (1992). https://doi.org/10.1007/BF02034886

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  • DOI: https://doi.org/10.1007/BF02034886

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