Microbore columns vs. open tubular columns for supercritical fluid chromatography in environmental analysis: Separation of polychlorinated biphenyls and terphenyls

The supercritical fluid chromatographic behavior of polychlorinated biphenyls (PCBs) and polychlorinated terphenyls (PCTs) is described. The method uses a microbore C-18 column and an open tubular capillary column coated with SE-52 and carbon dioxide as the supercritical fluid. Factors affecting the separation and retention of these compounds are discussed.