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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 28, Number 3
JKCSEZ 28(3)
June 20, 1984

Title	Ion-Pair Chromatography of Benzoic Acid and Its Derivatives on XAD-2 XAD-2 지지체를 이용한 벤조산과 그 유도체들의 이온쌍 크로마토그래피에 관한 연구
Author	Sam Woo Kang, Sam Gon Ryu, Young Kyu Park 강삼우, 유삼곤, 박영규
Keywords
Abstract	XAD-2 지지체를 이용하여 알코올성 수용액 중에서 벤조산과 그 유도체들의 머무름 거동을 조사하였으며, 또한 분리를 시도하였다. 벤조산과 그 유도체들의 머무름은 첨가한 유기용매의 농도와 종류, 유동상의 pH와 첨가된 R4N+에 의해 영향을 받았으며 시료 분자내의 치환기 종류와 위치에 의해서도 영향을 받았다. 약산 분자들이 산성 용액에서는 주로 흡착에 의하여 무극성 XAD-2표면에 머무름이 되고 반대이온을 첨가한 경우 염기성 용액에서는 이온쌍 모델을 따라 약산의 전리된 음이온들이 머무르는 것을 확인하였다. 이러한 결과들을 기초로 pH 8.50의 염기성 수용액에서 혼합시료를 분리하였다. 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 R4N+ 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.
Page	176 - 184
Full Text	PDF

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