Extraction Chromatographic Studies of Aluminium(III) with Versatic Acid and Its Analytical Applications

Department of Chemistry, Visva Bharati, Santiniketan-731 235

Manuscript received 27 June 1997, revised 18 February 1998, accepted 10 March 1998

A selective method has been developed for reversed phase extraction chl'omatographic studies of Al^III with Versatic-10 as a stationary phase on a column of silica gel. Quantitative extraction of Al^III has been achieved from 0.02 M acetate buffer solution in the pH range 4.75--5.5. The extracted AI^III has been stripped with 2.5 M nitric acid and estimated spectrophotometrically. The effects of pll, stripping agent, flow rate on extraction and elution behaviour have been examined. Exchange capacity and breakthrough capacity of the exchanger have been determined. Al^III has been separated from several synthetic multicomponent mixtures. The method has also been applied for the analysis of various ores and alloy samples.