Octadecylnhca coated with a mxxllar taunne-conjugated bde salt was mvestlgated for the ton chromatography of morgamc cations Monovalent and dwalent cations could be separated by the proposed system, m which cenum(III) chloride was employed as the mobile phase component and the catlons were determmed by mdxect UV-absorption measurement The system was applied to the detennmatlon of morganrc cations m wme, lsotomc beverage and water samples Keywords Ion chromatography, Beverages, Inorgamc catlons, Muxllar bde salt coated column, Waters, Wme Bile salts are nnportant blologlcal surfactants synthesized m the liver, which play an important role m many physlologlcal and blologlcal systems The mam blologlcal function of the bile salt 1111celles IS to solublhze dietary lipids and thus to accelerate greatly their absorption 111 Other functions of bile acids mvolve their complexatlon properties with cations, which enhance the mtestmal absorption of calcium or lron(II> ions [l] The structures of mlcellar bile salts are dtierent from those of other traditional nucelles formed from linear surfactants Bile salt mlcelles are chlral, helically shaped aggregates [2-61, and have been successfully employed as choral mobile phase