Abstract
Complex-forming equilibria between some divalent metal cations (Zn 2+, Co 2+ , Ni 2+, Fe 2+, Cd 2+, Mn 2+) and inorganic anions SCN −, SO 4 2−) were studied using ion chromatography on a column packed with octadecyl-bonded silica permanently coated with dodecyl sulphate. Relationships were derived describing the retention of metal cations in the presence of complexing agents. Stability constants of the complexes formed in the mobile phase were assessed from the dependences of the analyte capacity factors on ligand concentration in the mobile phase.
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