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Sequential separation of 99Tc, 94Nb, 55Fe, 90Sr and 59/63Ni from radioactive wastes

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Abstract

A sequential separation procedure has been developed for the determination of 99Tc, 94Nb, 55Fe, 90Sr and 59/63Ni in various radioactive wastes generated from nuclear power plants. Ion exchange and extraction chromatography were adopted for individual separation of the radionuclides. Precipitation was supplementarily utilized for both purification of the individual radionuclides and preparation of the radionuclide sources for use in a radioactivity measurement. The chromatographic separation behavior of the radionuclides both from the sample matrix metals and from one another was investigated using stable metals, Re (as a surrogate of 99Tc), Nb, Fe, Sr and Ni. The validity of the procedure for reliability and applicability was evaluated by measuring the recovery of the metal carriers added to synthetic radioactive waste solutions. The recoveries by the chromatographic separation were in the range of 84.8 to 102.2% with 2s of less than 8.6%, the recoveries by the precipitation being in the range of 84.3 to 97.3% with 2s of less than 10.9%.

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Authors and Affiliations

  1. Korea Atomic Energy Research Institute, P.O. Box 105, Yuseong, Daejeon, 305-600, South Korea

    Chang Heon Lee, Moo Yul Suh, Kwang Yong Jee & Won Ho Kim

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  1. Chang Heon Lee
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  2. Moo Yul Suh
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  3. Kwang Yong Jee
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  4. Won Ho Kim
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Lee, C.H., Suh, M.Y., Jee, K.Y. et al. Sequential separation of 99Tc, 94Nb, 55Fe, 90Sr and 59/63Ni from radioactive wastes. J Radioanal Nucl Chem 272, 187–194 (2007). https://doi.org/10.1007/s10967-006-6835-y

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  • DOI: https://doi.org/10.1007/s10967-006-6835-y

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