Using different types of capillary chromatographic columns as denudation traps: a comparison of sorption properties.

ABSTRACT

The research presented concerns segments of capillary chromatographic columns of different types (WCOT, SCOT, PLOT) used as traps for collection of samples of volatile organic analytes from a stream of air utilizing the equilibrium denudation technique. During the model experiments (utilizing standard mixtures), values of the partition coefficients (Kfs) were determined for volatile organic compounds frequently occurring as pollutants of atmospheric air (benzene, toluene, ethylbenzene, o-xylene, chlorobenzene). The conducted research demonstrated that the stationary phase film thickness did not affect the partition coefficient value. It was also proved that there is no dependence between the manner of applying the stationary phase in the column and the partition coefficient value.