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- W20201112 abstract "Summary 1,1,1-tris(N,N-diisobutylcarbamoyl-methyleneoxymethyl)propane (L) has been prepared and characterized by using IR, 1 H NMR and positive-ion FAB mass spectra. The extraction of Th 4+ and UO 2 2+ with L was studied as a function of concentration of free extractant in an organic phase and of picrate in an aqueous phase from a picrate-nitrate medium at 293±1K. It was found that the extractability of L for Th 4+ is larger than that for UO 2 2+ . Both extraction % of Th 4+ and UO 2 2+ decreased with an increase in the concentration of HNO 3 . The mechanism of extraction of Th 4+ with L was proposed. The composition of extracted species of L with Th 4+ in the organic phase is ThL(Pic) 2 (NO 3 ) 2 . The results of extraction of trace 234 Th 4+ with L from the picrate-nitrate medium containing UO 2 2+ (the initial concentration of UO 2 2+ , C 0 UO₂²⁺ =1.23×10 -4 mol/dm 3 (M)) agreed well with those from the extraction of single component solutions. The tripodand is useful in separation of Th 4+ and UO 2 2+ from each other in picrate-nitrate media with a relatively high separation factor." @default.
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- W20201112 date "2004-03-01" @default.
- W20201112 modified "2023-09-27" @default.
- W20201112 title "Solvent extraction and separation of thorium(IV) and uranium(VI) by an ether-amide type tripodand" @default.
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- W20201112 doi "https://doi.org/10.1524/ract.92.3.171.30494" @default.
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