Chemical Characterization of Al-Li Alloys for Scandium by Hyphenated Technique using Ion Exchange Chromatography

Abstract

A simple method is developed for separation of scandium in Al-Li alloys using anion exchange chromatographic technique in ammonium sulphate medium. Scandium is strongly adsorbed on basic anion exchange resin, Dowex 1, X-8 (sulphate form) in 0.1 M ammonium sulphate and in 0.025 M sulphuric acid medium. In such condition, Al, Fe, Cu, Mn, Cr, Mg, Ti and Li are not adsorbed. The adsorbed scandium is eluted by ammonium sulphate and estimated by complexometric technique using 0.01 M EDTA.