Thermodynamics of the sorption of organic compounds on polyethylene glycol 400–permethylated β-cyclodextrin stationary phase and its enantioselectivity in gas chromatography

Abstract

The thermodynamic characteristics of sorption of 24 organic compounds of various classes from the gas phase on the binary stationary phase based on polyethylene glycol 400 and permethylated β-cyclodextrin were determined. The influence of geometrical structure and optical activity of organic compounds on the possibility of forming sorbate–macrocycle complexes was examined. It was found that the studied stationary phase shows the enantioselectivity towards low-polar terpenes under the conditions of gas chromatography.