Gas chromatographic separations of all 136 tetra- to octapolychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans on nine different stationary phases

摘要: All 49 polychlorinated dibenzo-p-dioxins and 87 dibenzofurans containing 4 to 8 chlorines have been synthesized purified as individual compounds in quantitative amounts. These standards chromatographed on a series of nine fused-silica capillary gas chromatography (GC) columns silicone stationary phases diverse polarity (100% methyl, 5% phenyl 50% methyl trifluoropropyl, 50%, 75%, 90% 100% cyanopropyl liquid crystalline smectic). The data, expressed GC chromatograms tables relative retention times, are the most comprehensive date with regard congeners variety provide confirmation much earlier work. information shows that all 136 compounds, including biologically important 2,3,7,8-substituted congeners, can be separated from each other mostly two phases. However, possible variation conditions necessitates assessment resolution near eluting isomers. Comparisons contrasts previously published reports also noted.