Paper Chromatographic Separations of Metal Ions on Collidinium Tungstoarsenate Papers |
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Abstract: | Abstract A systematic study of the chromatography of metal ions on collidinium tungstoarsenate papers has been performed using seven different mixed solvent systems. Rf values of 30 metal ions have been determined by ascending technique and are discussed. The study demonstrates that specific extraction of both Sn(ii) and Sn(iv) is possible in 0.1 mol dm?3 HNO3 in 80% (v/v) 1-propanol and their mutual separation can be carried out in solvent system 1 mol dm?3 HCl in 33% (v/v) 1-propanol. In addition some binary and ternary separation of metal ions have also been achieved on these papers. For a comparison Rf values on plain papers have also been determined in all the solvent systems. |
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