Separation of hydrohalocarbons and chlorofluorocarbons using a cyclodextrin gas solid chromatography capillary column

Chromatographic analysis of very volatile hydrohalocarbons and chlorofluoro carbons has proved to be a difficult task due to the generally poor retenti on of these compounds on commercially available wall coated open tubular ca pillary columns. Although porous layer open tubular (PLOT) capillary column s coated with alumina/KCl, or alumina/Na2SO4 provide adequate resolution fo r this class of compound they induce dehydrochlorination of certain hydroha locarbons. More recently PLOT columns coated with Porapak porous polymer ma terials Q, S and U have been shown to provide inadequate resolution and hig h column bleed at the high column temperatures required for separation. We present results from the analysis of mixtures of hydrohalocarbons, chlorofl uorocarbons, halocarbons, and halons, using a commercially available cyclod extrin PLOT column. (C) 1999 Elsevier Science B.V. All rights reserved.