TLC SEPARATION OF TRANSITION-METAL IONS AND THEIR QUANTITATIVE ESTIMATION BY ATOMIC-ABSORPTION SPECTROSCOPY

Separation of an eight component mixture of transition metal ions has been studied on plain and impregnated silica gel layers. The solvent s ystems used were pyridine-benzene-acetic acid-water (6:5:8:4,v/v) on 1 ,10-phenanthroline (1%), n-butanol-benzene-formic acid (5:10:9,v/v) on DMG (1%) and pyridine-benzene-acetic acid-water (5:5:4:1,v/v) on EDTA (2%) impregnated silica gel layers. beta-naphthol (0.1% in methanol) has been developed as a new locating reagent. The percentage recovery of these metal ions in quantitative estimation by AAS ranged between 6 5.2 to 89.9.