... Novel anion exchanger for ion chromatography based on covalently modified aminated silica . Abstract Novel method of synthesis of the anion exchangers for ion chromatography providing the covalent attachment and spatial moving of the ion exchange layer away from the silica surface is proposed. ... Key words : anion exchangers, ion chromatography, silica, covalent modification, polyethyleneimine, determination of anions. Moscow University Chemistry Bulletin . 2014, Vol. ... 6, P. 327 . ...