Abstract
Capillary gas chromatographic enantiomer separation of some polar compounds, including α-phenylethylamine, styrene oxide, pyrethroid insecticides and other carboxylates, was investigated on modified cyclodextrin (CD) chiral stationary phases. The chiral stationary phases studied included permethylated β-CD (PMBCD), heptakis (2,6-di-O-butyl-3-O-butyryl)-β-CD (DBBBCD), heptakis (2,6-di-O-nonyl-3-O-trifluoroacetyl)-β-CD (DNTBCD), the mixture of PMBCD and DBBBCD, and the mixture of PMBCD and DNTBCD. On the mixed chiral stationary phases containing the mixtures of derivatized cyclodextrins, enantiomer separation was improved significantly for some compounds as compared to the single cyclodextrin derivative chiral stationary phases, and synergistic effects were observed for some compounds on the mixed cyclodextrin derivative chiral stationary phases.
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