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Chemosphere Volume 16, Issues 8-9 , 1987, Pages 1631-1634
A simple method for determining non-ortho substituted PCBs in Kanechlors, Aroclors and environmental samples
Narayanan Kannan, Shinsuke Tanabe, Tadaaki Wakimoto and Ryo Tatsukawa
3,3',4,4'-tetra, 3,3',4,4',5-penta and 3,3',4,4',5,5'-hexachlorobiphenyl are known to be the most toxic PCBs. We developed an isomer specific analytical method for these congeners by combining alkali digestion, carbon chromatography, HR-GC-ECD and GC-MS. Our method revealed the presence of these toxic congeners in wildlife and humans at ppb and higher ppt levels. They were also detected in Aroclors and Kanechlors ranging from several hundred to thousand ppm of tetra, few ppm to several ten ppm of penta and several hundred ppb or less of hexachlorobiphenyl.
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