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Improved congener specific gc analysis of chlorobiphenyls on coupled cpsil 8 and ht 5 columns



Improved congener specific gc analysis of chlorobiphenyls on coupled cpsil 8 and ht 5 columns



HRC Journal of High Resolution Chromatography 15(6): 377-386



The congener-specific analysis of polychlorinated biphenyls (PCB) by high resolution gas chromatography on a 50 m .times. 0.25 mm fused silica column coated with a 0.26 .mu.m film of 5% diphenyl polydimethylsilaxoane (CPSil-8) has been significantly improved by series coupling with a 25 .times. 0.22 mm column coated with a 0.10 .mu.m film of 1,2-dicarba-closo-dodecarborane polydimethylsiloxane (HT-5). Using helium as carrier gas, a total of 64 congeners in technical PCB mixtures could be analyzed as resolved peaks by ECD (86 by MS) with the CPSil-8 column, and 84 by ECD (108 by MS) with the combination. The high upper temperature limit for these stationary phases (> 300.degree. C) enabled fast temperature programming and rapid analysis (60 min).

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Accession: 007434887

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DOI: 10.1002/jhrc.1240150605


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