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Thiacalix [4] arene derivatives have unique complexahion nabme that they can coordinate weakly to transition metal rations and hardly to alkali and alkaline earth metal rations. To apply this nature to ion chromatography, p-tert-octylthiacalix [4] arene was coated onto reversed Phase high performance liquid chromatography column and cation-chromatographic property of thiacalpc [4] arene-type cation-exchange group was researched. As a resulk it was found that the coated column can be used for selective separation and conductivity detection of copper (II) ration with using proton as eluent cation.

Non-suppressed Ion Chromatography of Copper (II) Cation Using Thiacalix[4]arene as Cation-exchange Group