Chemical characterization of crude oil residues from an arctic beach by GC/MS and GC/FID
Article Abstract:
A complete 'total oil analysis method' was developed to monitor the chemical changes and study the persistence of 12-year-old weathered oil residues in Baffin Island. Quantitation of sediment samples extracted from fresh and weathered source oil showed that weathered percentages of residual oil are correlated to total solvent-extractable materials, total petroleum hydrocarbons, aliphatic, aromatic and biomarker analysis results. The results suggest that biodegradation has a strong influence on the removal of residual oil and that rate of composition change varies according to arctic conditions.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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Study of the 25-year-old Nipisi oil spill: persistence of oil residues and comparisons between surface and subsurface sediments
Article Abstract:
A follow up study on the 25-year-old Nipisi oil spill in Alberta, showed that even after the cleanup efforts, residual oil still exists in the soil column and that the biological degradation of the oil residue is consistent with soil depth. The concentration of oil residues present in the soil colum were surprisingly found to be even throughout the whole area, even as a number of remediation techniques were applied in different parts of the area. Analysis of the oil residues indicate that the natural degradation process is slow.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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Use of methyldibenzothiophenes as markers for differentiation and source identification of crude and weathered oils
Article Abstract:
Gas chromatography and mass spectrometry techniques were used to characterize crude and weathered oils, with isomeric methyldibenzothiophenes as indicators. Although the approach is efficient, ratios were altered by biodegradation. This suggests that the method is also an effective indicator of the occurrence of microbial degradation of oils.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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