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    Please use this identifier to cite or link to this item: https://ir.fy.edu.tw:8080/ir/handle/987654321/1789


    Title: Use of β-cyclodextrin bonded phase with s-triazine moiety in the spacer for separation of aromatic carboxylic acid isomers by high-performance liquid chromatography
    Authors: Lin,Chen-Hsing;Chen, Chih-Yu;Chang,Shu-Wen;Wu,Jong-Chang;Lin, Ching-Erh
    Contributors: 輔英科技大學 環境工程與科學系
    Keywords: High-performance liquid chromatography;Cyclodextrin bonded phase;Retention mechanism;Aromatic carboxylic acids;s-Triazine
    Date: 2006-08-18
    Issue Date: 2010-09-24 16:30:09 (UTC+8)
    Abstract: The separation and retention behavior of five aromatic carboxylic acid isomers was investigated by means of high-performance liquid chromatography (HPLC) using a β-cyclodextrin bonded phase with s-triazine ring in the spacer. The influence of mobile phase pH on the retention was examined. The presence of s-triazine moiety in the spacer enhances greatly the selectivity of the isomers of aromatic carboxylic acids. Baseline separations of the five aromatic carboxylic acid isomers were achieved. In particular, the isomers of toluic, aminobenzoic, nitrobenzoic and hydroxybenzoic acid were successfully and effectively separated. The chromatographic results indicate that, in addition to inclusion complexation, π–π interaction and hydrogen bonding interaction between the bonded phase and analytes play significant roles in the retention of these acid isomers. Different elution orders were observed for these acidic solutes with different substituents. Possible retention mechanisms are discussed.
    Relation: Analytica Chimica Acta,Volume 576, Issue 1,Pages 84-90
    Appears in Collections:[環境工程與科學系] 期刊論文

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