POSSIBLE VALUE FOR THE GAS-CHROMATOGRAPHIC ANALYSIS OF ESSENTIAL OILS OF SOME UNUSUAL PHASE COMMERCIAL CAPILLARIES

Analyses of sweet fennel and mace oils using a toroid or a liquid crystal phase are compared with results from conventional phases, identifying peaks by mass spectra and retention times. The toroid phase may be useful for resolving some terpene hydrocarbons, and the liquid crystal the choice for some aromatics, which include minor toxic oil constituents. They provide useful confirmatory results to those from conventional phases, and possibly better separation of some substances.