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N2O2-donor macrocycle based polymer, poly(1,12-diaza-3,4: 9,10-dibenzo-5,8-dioxacyclopentadec-1,12-ylene-2,7-dilydroxyoctamethylene: poly-NTOE) was synthesized to separate of Pd2+ ion by column chromatography. Binding constants between the poly-NTOE and metal ions were measured in order to identify the selectivity of the poly-NTOE for metal ions such as Na+, Ca2+, Cu2+ and Pd2+ ion. The poly-NTOE stationary phase exibited stronger affinity for Pd2+ ion in comparison with other metal ions. This affinity was continued to 2.0 M HCl. Chromatograms for the mixtures of metal ions were obtained using 1.0 M HCl aqueous solution as eluent. Pd2+ ion was separated selectively. Separation efficiency was investigated in view of the column length and amount of stationary phase. Better efficiency was obtained by increasing column length.
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