Abstract
The distribution of microamounts of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y nitrates between aqueous HNO3 solutions and solutions of polyalkylphosphonitrilic acid in a fluorinated alcohol was studied. The stoichiometry of the extractable REE complexes was determined. An increase in the concentration of fluorinated alcohol in the organic phase leads to a decrease in the REE distribution ratios, which is due to solvation of the extractant with the alcohol molecules.
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Original Russian Text © A.N. Turanov, V.K. Karandashev, N.I. Rodygina, A.M. Fedoseev, 2007, published in Radiokhimiya, 2007, Vol. 49, No. 3, pp. 233–236.
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Turanov, A.N., Karandashev, V.K., Rodygina, N.I. et al. Extraction of rare-earth elements from nitric acid solutions with polyalkylphosphonitrilic acid. Radiochemistry 49, 264–267 (2007). https://doi.org/10.1134/S1066362207030095
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DOI: https://doi.org/10.1134/S1066362207030095