Abstract
The mechanism of the separation of selected divalent metal cations (Zn2+, Ni2+, Co2+, Cd2+, Mn2+, Fe2+ and Pb2+) by ion-interaction chromatography (IIC) in the presence of complexing agents has been investigated; the dependence of the retention of the analyte on the concentration of the complexing ligand has been studied. Separations have been obtained on an octadecyl-bonded silica column, mobile phases containing an ion-interaction agent (octane sulfonate), eluting cations (Na+ ions) and a complexing ligand (oxalate anions).
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