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Cerium isotope partition in HNO3/TBP or HDEHP extraction systems

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Abstract

The142/140Ce unit separation factors (q) for cerium(III)-cerium(IV) exchange reaction in an extraction system containing Ce(IV) in tri-n-butyl phosphate (TBP) or di(2-ethylhexyl) phosphoric acid (HDEHP) and Ce(III) in nitric acid were determined. The value of q was found to be 1.00054±0.00012 (2σ) in 6M HNO3/TBP and 1.00078±0.00028 in 6M HNO3/HDEHP extraction systems. The dehydration and complex formation processes and their contribution to reduced partition function ratios (RPFR's) are discussed.

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Author notes

  1. N. Phuc

    Present address: Atomic Institute, Hanoi, Vietnam

Authors and Affiliations

  1. Department of Radiochemistry, Institute of Nuclear Chemistry and Technology, 03-195, Warsaw, (Poland)

    W. Dembiński, K. Goroncek & N. Phuc

Authors
  1. W. Dembiński
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  2. K. Goroncek
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  3. N. Phuc
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Dembiński, W., Goroncek, K. & Phuc, N. Cerium isotope partition in HNO3/TBP or HDEHP extraction systems. Journal of Radioanalytical and Nuclear Chemistry, Articles 149, 169–176 (1991). https://doi.org/10.1007/BF02053725

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  • DOI: https://doi.org/10.1007/BF02053725

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