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Radiation stability of macro-porous and gel-type cation exchangers

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Abstract

Macro-porous cation exchange resin Diaion CPK-08 and gel type cation exchange resin Dowex 50WX8 were irradiated with γ-rays from60Co, while soaked in distilled water, 0.5M HNO3 or 4M HNO3, and the ion-exchange properties, such as strong- and weak-acid capacities, moisture content and wet resin volume, were examined in relation to absorbed dose. There was no appreciable difference between the radiation stabilities of the two cation exchangers. Increase of HNO3 concentration reduced the loss of strong-acid capacity and increased the decross-linkage and the weak-acid capacity. Elution characteristics of137Cs and90Sr from columns packed with γ-irradiated resin were examined and the column distribution ratio of these radionuclides and the theoretical plate number were calculated. These values decreased with the increase of absorbed dose. Diaion CPK-08 was packed into a pressurized column and irradiated with γ-rays at a dose rate of 2·106 R/hr, while water was passed through the column at a constant flow rate. The greatest change of the resin properties was observed at an upper stream position from the position of the highest radiation dose of 2·106 R/hr.

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Authors and Affiliations

  1. Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, Japan

    M. Kubota, H. Nakamura & H. Amano

  2. Mitsubishi Chemical Industries LTD, Chiyoda-ku, Tokyo, Japan

    Y. Konami

Authors
  1. M. Kubota
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  2. Y. Konami
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  3. H. Nakamura
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  4. H. Amano
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Kubota, M., Konami, Y., Nakamura, H. et al. Radiation stability of macro-porous and gel-type cation exchangers. J. Radioanal. Chem. 45, 73–89 (1978). https://doi.org/10.1007/BF02517112

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  • DOI: https://doi.org/10.1007/BF02517112

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