Cerium isotope partition in HNO3/TBP or HDEHP extraction systems |
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| Authors: | W Dembiński K Goroncek N Phuc |
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| Institution: | (1) Department of Radiochemistry, Institute of Nuclear Chemistry and Technology, 03-195 Warsaw, (Poland);(2) Present address: Atomic Institute, Hanoi, Vietnam |
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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 (2 ) 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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