CHROMATOGRAPHIC-SEPARATION OF SOME TRANSITION-METAL IONS ON CHELATINGCOLUMN BEARING ACETYLACETONE MOIETY

A novel chelating stationary phase with acetylacetone moiety grafted t o the silica gel was synthesized and employed for chromatography of me tal ions. 8-Hydroxyquinoline was used as a mobile phase additive for d etection and separation purposes. The retention of the analytes is gov erned by in situ complex formation and is affected by the acidity of a mobile phase and the concentration of 8-hydroxyquinoline. The optimum pH range and that of 8-hydroxyquinoline concentration needed to obtai n the best results of analysis were determined.