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Extraction of microamounts of U(VI), Th(IV), and REE(III) from HNO3 and HClO4 solutions with solutions of (α-pyridyl)tetraphenylmethylenediphosphine N,P,P'-trioxide in dichloroethane was studied. The stoichiometry of the extractable complexes was determined, and the influence of the extraction structure and aqueous phase composition on the efficiency and selectivity of the extraction of U(VI), Th(IV),...
The extraction of microamounts of U(VI), Th(IV), and rare earth elements(III) [REE(III)] from HNO3 solutions with solutions of 4,4-bis(diphenylphosphoryl)butan-2-one in dichloroethane was studied. The stoichiometry of the extractable complexes was determined, and the influence of the extractant structure, kind of organic diluent, and aqueous phase composition on the efficiency and selectivity of the...
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