COLUMN CHROMATOGRAPHIC-SEPARATION OF CATIONS BY ANION-EXCHANGE CHROMATOGRAPHY USING PAR AS COMPLEXING AGENT

The anion-exchange behaviour of a number of metal-4-(2-pyridylazo)reso rcinal (PAR) complexes on Dowex-1-XB (Cl--form) in ethanolic medium ha s been studied, The distribution coefficients mere determined by batch technique for predicting the conditions for the possible separations on column. The effect of pH and different organic solvents on the dist ribution coefficients has also been studied, The column chromatographi c separations achieved were quantitative, The distribution coefficient s, column elution behaviour of metal complexes and the results of sepa ration of synthetic mixtures along with elution curves are presented.