Free Access
Volume 26, Number 2, March 1998
Couplages CG/SM et CL/SM
Page(s) 74 - 82
Section Original articles
Analusis 26, 74-82 (1998)
DOI: 10.1051/analusis:1998114

Extraction of indium(III) from chloride and nitrate media with 3-phenyl-4-benzoylisoxazol-5-one, HPBI, and tri-n-octylphosphine oxide

M. Chaoui Roqai, G.J. Goetz-Grandmont and J.P. Brunette

Laboratoire de Chimie Analytique et Minérale de l'ECPM, UMR CNRS-ULP n° 7512, 1 rue Blaise Pascal, BP. 296, 67008 Strasbourg, France

The extraction processes of indium(III) from media of various complexing ability, chloride and nitrate, in toluene or chloroform, have been elucidated. Indium is extracted from 1 M nitrate medium as In(PBI)3 with HPBI alone and as In(PBI)3(TOPO)2 with TOPO-HPBI mixtures, while it is extracted from 1 M chloride medium as In(PBI)3 and InClx(PBI)3-x(TOPO)2. The complexation of In in the aqueous phases, the extraction of nitric acid and various solute-solute and solute-diluent interactions in the organic phases must be taken into account in the processes. The results are compared with those obtained previously with 1-phenyl-3-methyl-4-benzoyl-pyrazol-5-one under the same conditions.

Key words: Extraction / indium / acylisoxazolone / 3-phenyl-4-benzoyl-isoxazol-5-one / tri-n-octylphosphine oxide.

© EDP Sciences, Wiley-VCH 1998