Abstract
Trimethylbiphenyl isomers (17) have been identified in three Australian crude oils using capillary gas chromatography—mass spectrometry (MRM) techniques. Total concentrations of trimethylbiphenyls in the crude oils ranged from 100 to 600 μg/g and in all cases the most abundant isomers were those with substituents in the meta and para positions. The elution order of all the isomeric trimethylbiphenyls is reported for four capillary columns with a range of stationary phases.
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