Summary
A low-capacity, anion-exchange, porous-polymer resin was used as the packing material in a microbore column. Using a phosphate buffer containing various organic modifiers, retention behavior of substituted benzoic acid isomers with amino, chloro, methyl, nitro and carboxylic groups was investigated. The effect of ethanol, acetonitrile and sodium dodecylsulfate used as organic modifiers on the retention behavior at various eluent pH values was studies and optimum separations of the positional isomers reported.
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Naikwadi, K.P., Rokushika, S. & Hatano, H. Liquid chromatography of isomers of aromatic acids on microbore column packed with anion-exchange resin. Chromatographia 18, 633–636 (1984). https://doi.org/10.1007/BF02261979
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DOI: https://doi.org/10.1007/BF02261979