Abstract
Bitumen and bitumen impacted soil and water samples were investigated for their relative chemical composition using comprehensive gas chromatography GcxGc – time of flight mass spectrometry (GCxGC-TOFMS). The results reveal the presence of key compounds which could serve as environmental biomarkers for bitumen impacted soils and aquifers. Prominent alkanes such as 3-methylpentane; 2,2,4-trimethylpentane; 1,3,5-trimethyladamantane; 2,6,10-trimethyldodecane; 3-ethyl-2,2-dimethyl pentane were tentatively identified and are likely potent biomarkers in environmental forensic assessment of bitumen contamination while the presence of some aromatic compounds: 1,2-benzenedicarboxylic acid, 1,2-dimethyl-3-propylbenzene; 3,4-bis(methoxycarbonyl)benzoic acid; 1,3-bezenedicarboxylic acid, 1,2-benzenediol; 1,3-dimethylbenzene; 1,2-2-(2-ethylhexoxycarbonyl)benzoic acid; (4-methylpentan-2-yl)benzene; 2,4-dimethyl benzo(H)quinolone will further confirm the bitumen contamination in an area under investigation. A host of additional compounds were tentatively identified, mainly in the bitumen samples. The results obtained in this study provides baseline data for effective monitoring, and source apportionment of oil/oil products spills.
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