Abstract
The extraction of HNO3 and microamounts of U(VI), Th(IV), Sc(III), and REE(III) nitrates from HNO3 solutions with dichloroethane solutions of phosphorus-containing podands containing two terminal Ph2P(O)CH2C(O)NH groups linked by a di-or triethylene glycol chain was studied, and the stoichiometry of the extractable metal complexes was determined. The compounds extract the metal ions from nitric acid solutions more efficiently than does (dibutylcarbamoylmethyl)diphenylphosphine oxide. With increasing length of the polyethylene glycol chain, the extraction of HNO3 increases, but the degree of recovery of REE(III) ions from HNO3 solutions of the concentration exceeding 3 M decreases.
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Original Russian Text © A.N. Turanov, V.K. Karandashev, N.A. Bondarenko, 2006, published in Radiokhimiya, 2006, Vol. 48, No. 2, pp. 158–163.
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Turanov, A.N., Karandashev, V.K. & Bondarenko, N.A. Extraction properties of polyfunctional P,N-containing podands with diphenylphosphorylacetamide terminal groups in nitric acid solutions. Radiochemistry 48, 175–180 (2006). https://doi.org/10.1134/S1066362206020147
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DOI: https://doi.org/10.1134/S1066362206020147