Fast separation of Ti(IV), As(III), W(VI), Au(III) from numerous metal ions and of FeAlTi by paper chromatography

Abstract

Ti 4+ has been successfully separated from its binary mixtures with 32 cations using formic acid—hydrochloric acid—acetone (3:5:2). The cations include Cu 2+, Al 3+, Fe 3+, V 4+, Mo 6+, W 6+, Zr 4+, Th 4+, Ni 2+ and Co 2+. Ti 4+ stays at the point of application while other ions have R F values greater than o+5. The separation is successful in the presence of acetate, tartrate, formate and citrate. Au 3+ and W 6+ have been separated from numerous metal ions using 70% nitric acid— n-butanol (6:4). W 6+ stays at the point of application while Au 3+ goes to the solvent front. As 3+ has been separated from its binary mixtures with 25 cations using pure formic acid as the eluent. The ions studied include Sb 3+, Cu 2+, and Sn 2+. The presence of common anions does not affect this separation. W 6+ has been separated from its binary mixtures with 35 ions. The ions include Mo 6+, Ti 4+, Th 4+, UO 2+ 2, V 4+, Co 2+, Ni 2+ and Pd 2+. Separation of Fe 3+Al 3+Ti 4+ has been achieved using formic acid—hydrochloric acid—acetone (3:4:3). The separation is successful in the presence of common anions and no special method for the preparation of the sample is necessary.