Choice of GC column phase for analysis of toxic PCBs

Improved separation of the 209 polychlorinated biphenyl congeners using comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry

“…From right to left, the ortho-substitution level increases from as low as non-ortho-CBs up to tetra-ortho-CBs. The congener distribution can be explained by the interaction of the carborane phase with PCB -electrons, which is related to the degree of ortho-substitution and to the planarity of the molecule, as previously reported for PCBs [5,[46][47][48][49]. The resulting ordered structure was, thus, different than the one from the DB-1/HT-8 set.…”

Study of polychlorinated biphenyls in street dust by supercritical fluid extraction-gas chromatography/mass spectrometry

“…Separation of the PCBs was achieved with an on-column injection into a 50 m × 0.25 mm i.d. column, Type SE-54-CB-0.25 (MachereyNagel), chosen because this kind of column was widely used for PCB separation and quantification [19,20]. Selective and quantitative determination of the PCBs was performed using selected ion monitoring (SIM).…”

Evaluation of four capillary columns for the analysis of organochlorine pesticides, polychlorinated biphenyls, and polybrominated diphenyl ethers in human serum for epidemiologic studies

“…This co-elution problem was addressed by either altering the oven temperature program to increase the resolution or using MS to confirm the identity of the compounds [14,15]. Co-elution problems can also be addressed by employing two analytical columns with different liquid stationary phases [16][17][18][19][20][21][22], or by using column chromatography to isolate the OCPs and PCBs.…”