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- W2080366926 abstract "From studies of the extraction of yttrium, americium(III) and curium(III) from aqueous fluoride, [F−], into di-2-ethylhexyl phosphoric acid, H2D2, it has been deduced that for [F−] = (0·1 − 4·0) × 10−3 ml−1 and pH = 3·60 substances other than M(HD2)3 contribute appreciably to the metal, M, ion distribution. From known equilibrium constants for for aqueous fluoro metal complexes of yttrium it was concluded that, under the prevailing experimental conditions, a substance of the form YF3. 3HxDx (where x is an unknown integer) also extracts. A method was thus evolved whereby distribution data alone were made to yield equilibrium constants for the stepwise formation of the first three complexes for americium(III) [β1 = 2·46 × 103, β2 = 1·28 × 106, β3 = 1·0 × 109] and curium-(III) [β1 = 2·21 × 103, β2 = 1·50 × 106, β3 = 1·2 × 109] at μ = 0·500 (NaClO4). For [F− = (0·2 − 220) × 10−5 ml−1 and pH 2·50 scandium extracts overwhelmingly as Sc(HD2)3 and β1 – β4 are obtained in good agreement with published values. Tests, which throw light on the nature and number of the principle metal species which extract, are described." @default.
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- W2080366926 title "Equilibrium constants for aqueous fluoro complexes of scandium, yttrium, americanium(III) and curium(III) by extraction into di-2-ethylhexyl phosphoric acid" @default.
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- W2080366926 doi "https://doi.org/10.1016/0022-1902(69)80332-5" @default.
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