Chinese Journal of Chromatography

Chinese Journal of Chromatography

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Preparation of Stationary Phases of Four β-Cyclodextrin Derivatives for Gas Chromatography by Sol-Gel Technique

GE Xiaoxia1,2, QI Meiling2, LI Liang2, HUA Fei1, SHAO Qinglong2, FU Ruonong2   

  1. 1. The Chinese People′s Armed Police Force Academy, Langfang 065000, China; 2. Department of Chemistry, School of Science, Beijing Institute of Technology, Beijing 100081, China
  • Received:2004-05-08 Revised:1900-01-01 Online:2005-05-30 Published:1988-09-25

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Abstract: Heptakis(2,3,6-tri-O-ethyl)-β-cyclodextrin (CD) (perethylated-β-CD), heptakis(2,3,6-tri-O-propyl)-β-CD (perpropylated-β-CD), heptakis(2,3,6-tri-O-octyl)-β-CD (peroctylated-β-CD), and (2,6-di-O-benzyl)-β-CD were used as stationary phases to prepare columns for gas chromatography by sol-gel technique. The method of coating the columns is similar to the dynamic method and the time required was shortened. Chromatographic characteristics such as column efficiency (around 3000 plates/m), column stability and reproducibility (relative standard deviation below 8.5%) were studied. The columns exhibited good separation ability for disubstituted benzene isomers, especially for xylenes and cresols. In addition, the three peralkylated-β-CD columns offer better selectivity than the (2,6-di-O-benzyl)-β-CD column.

Key words: (2,6-di-O-benzyl)-β-cyclodextrin, peralkylated-β-cyclodextrin, capillary gas chromatographic column , sol-gel technique