HRGC Separations of 160 Chlorobiphenyls in Technical Mixtures on Four Polar Narrow-Bore Columns

摘要

The separation of 160 chlorobiphenyl (CB) congeners from technical polychlorinated biphenyl (PCB) mixtures was investigated on four narrow-bore, fused silica gas chromatography (GC) columns with high temperature resistant polar stationary phases: 15 diphenyldimethylsiloxane (0.20 #x3BC;m SIL-13,50m#xD7;0.25 mm), 50 diphenyl dimethylsiloxane (0.25; gmm DB-17, 60 m#xD7;0.25 mm), a series combination of 5 diphenyldimethylsiloxane (0.25 #x3BC;m SIL-8,25 m#xD7;0.25 mm) with 1,10-dicarba-closo-dodecarborane dimethylsiloxane (0.1 #x3BC;m HT-5. 25 m#xD7;0.2 mm) and a 70 cyanopropyl silphenylene dimethylsiloxane copolymer0(0.25 #x3BC;m BPX-70,50 m#xD7;0.22mm). Technical PCB mixtures (Aroclors) and authentic standards (totally 149 CBs) were injected on the narrow-bore columns and analyzed by GC-ECD and GC-MS.