期刊
SOLVENT EXTRACTION AND ION EXCHANGE
卷 27, 期 4, 页码 551-578出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/07366290903044683
关键词
tetra-(p-tolyl)[(o-phenylene)oxymethylene] diphosphine dioxide; diglycolamide ligands; lanthanides(III); extraction; solvent impregnated resin
资金
- ICP-MS
A novel tridentate neutral organophosphorus compound, tetra-(p-tolyl)[(o-phenylene)oxymethylene] diphosphine dioxide (I) has been synthesized and its extracting ability for microquantities of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y from HNO3 and NH4NO3 aqueous solutions has been studied. The effect of HNO3 concentration in the aqueous phase and that of the extractant concentration in the organic phase on the extraction of metal ions is considered. The stoichiometry of the extracted complexes and conditional extraction constants of Ln(III) have been determined. The extraction behavior of compound I is compared with that of the diglycolamide ligand TODGA. The potentialities of polymeric resin impregnated with compound I for the preconcentration of lanthanides(III) from nitric acid solutions are demonstrated.
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