High-resolution gas chromatography with liquid crystal glass capillaries: XII. Separation of isomeric C17–C18n-alkenes☆

Abstract The separation of isomeric C 15 –C 18 n -alkenes and n -alkanes was studied on high-efficiency glass capillary columns coated with liquid crystalline 4- n -propylbenzoic acid—4',5- n -hexyl pyrimidin-2-yl phenyl ester. The separation was optimized with respect to the stationary phase film thickness and column temperature. The separation system permits better and faster separations of isomeric n -heptadecenes and n -octadecenes compared with previously obtained separations on non-mesogenic and mesogenic stationary phases.