TLC Separation of Transition Metal Ions and Their Quantitative Estimation by Atomic Absorption Spectroscopy

Abstract

Separation of an eight component mixture of transition metal ions has been studied on plain and impregnated silica gel layers. The solvent systems 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. β-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 65.2 to 89.9.