Reversed Phase Extraction Chro-Matographic Separation of Antimony(III) with Trioctyl Phosphine Oxide

Abstract

Antimony(III) was separated by extraction chromatography with trioctyl phosphine oxide as stationary phase on column of silica gel with 0.5 M hydrochloric acid as the mobile phase. It was stripped with 3 M hydrochloric acid. Antimony(III) was separated from large number of elements belonging to alkali and alkaline earths, transition and main groups in binary mixtures by selective extraction. It was possible to separate antimony(III) in multi-component mixtures by exploiting differences in acidities at which various elements were eluted. The method was extended for the analysis of antimony from solder and brass.