Journal
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
Volume 290, Issue 1, Pages 215-219Publisher
SPRINGER
DOI: 10.1007/s10967-011-1234-4
Keywords
Europium; Americium; n-Octyl(phenyl)-N; N-diisobutylcarbamoylmethylphosphine oxide; tri n-Butylphosphate; Room temperature ionic liquid; Distribution ratio
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Extraction of europium(III) from nitric acid medium by a solution of tri-n-butylphosphate (TBP) and n-octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) in the room temperature ionic liquid, 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (amimNTf(2) where a = butyl or hexyl or octyl), was studied. The distribution ratio of Eu(152+154)(III) in TBP-CMPO/bmimNTf(2) was measured as a function of various parameters such as the concentrations of nitric acid, CMPO and NaNO3. Remarkably large distribution ratios were observed for the extraction of europium(III) when bmimNTf(2) acted as diluent. The stoichiometry of metal-solvate in organic phase was determined by the slope analysis of extraction data.
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