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The congener specific analysis of polychlorinated biphenyls (PCB) by high resolution gas chromatography on a 50 m x 0.25 mm fused silica capillary column with a 0.26 micron film of 5 % diphenyl dimethyl polysiloxane (CP-SIL-8) was improved significantly by series coupling it with a 25 m x 0.2 mm fused silica capillary column with a 0.10 micron 1.2-dicarba-closo-dodecarborane dimethyl siloxane (HT-5). A total of 64 congeners in technical PCB mixtures could be analysed as resolved peaks by ECD (86 by MS) with the SIL-8 column and 84 by ECD (108 by MS) with the SIL-8/HT-5 combination column. The high upper limit for these stationary phases (above 300 C) allowed for fast temperature programming and short analysis time (60 min.).

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Authors: BOWADT S, JRC Ispra (IT);LARSEN B, JRC Ispra (IT)
Bibliographic Reference: Article: Journal of High Resolution Chromatography, Vol. 15 (1992) pp. 377-380
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