Ion-Pair Chromatography of Benzoic Acid and Its Derivatives on XAD-2

XAD-2 지지체를 이용한 벤조산과 그 유도체들의 이온쌍 크로마토그래피에 관한 연구

  • Published : 1984.06.20

Abstract

Retention behavior of benzoic acid and its derivatives on XAD-2 in the alcoholic aqueous solution was investigated and separation was attempted. Retention was affected by the concentration and kinds of added organic solvents, the pH of the aqueous solution, the added $R_4N^+$ and the position and kinds of functional group in the sample molecules. Retention of sample acids in acidic conditions was due to mainly molecular adsorption on nonpolar XAD-2 surface and that in basic conditions was due to mainly ion-pair model. In these bases a mixed sample was separated in EtOH 20% aqueous solution at pH 8.50.

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