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- Title
Synergistic extraction of Ce(III), Eu(III) and Tm(III) with a mixture of picrolonic acid and benzo-15-crown-5 in chloroform.
- Authors
Rehman, Habib-ur-; Ali, Akbar; Anwar, Jamil; Yawar, Wasim
- Abstract
The synergistic mixture comprising picrolonic acid (HPA) and benzo-15-crown-5 (B15C5) in chloroform has been used for the extraction of Ce(III), Eu(III) and Tm(III) as representatives of lanthanide(III) ions from pH 1-2 solutions having ionic strength of 0.1 mol. dm-3(K+/H+, Cl-). The composition of the extracted species has been determined as M(PA)3. nB15C5 where M is Ce, Eu and Tm and n=1 or 2. The influence of various anions and cations on the extraction of these ions has also been studied and only oxalate, cyanide and tartrate have some deleterious effect. The extraction equilibrium constants have been evaluated and discussed.
- Subjects
RARE earth metals; CROWN ethers; IONS; ANIONS; CATIONS; ONIUM ions
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2006, Vol 267, Issue 2, p421
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-006-0065-1