GAS-CHROMATOGRAPHIC ENANTIOMER SEPARATION OF SOME SELECTED POLYCYCLICXENOBIOTICS USING MODIFIED CYCLODEXTRINS

The enantiomers of several polychlorinated xenobiotics (heptachlor, ci s- and trans-chlordane, trans- and cis-heptachlorepoxide, oxychlordane , photo-heptachlor and photo-heptachlor-epoxide, photo-dieldrin, photo -chlordene, alpha-HCH, o,p'-DDT and o,p'-DDD) have been separated by g as chromatography with three beta-cyclodextrin derivatives as chiral s electors. Two of these selectors were dissolved in a polysiloxane stat ionary phase and one was chemically bonded to a polysiloxane backbone via hydrosilylation. The order of elution of some of the xenobiotics w as determined by comparison with enantiomerically enriched reference c ompounds.