Prestige Oil Spill. III. Fate of a Heavy Oil in the Marine Environment

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• 作者：Sergi Dí ; ez ; Eric Jover ; Josep M. Bayona ; Joan Albaigé ; s
• 刊名：Environmental Science & Technology
• 出版年：2007
• 出版时间：May 1, 2007
• 年：2007
• 卷：41
• 期：9
• 页码：3075 - 3082
• 全文大小：290K
• 年卷期：v.41,no.9(May 1, 2007)
• ISSN：1520-5851

文摘

More than 200 oil samples were collected along theNorthern Spanish coast, from December 2002 to December2003, as part of the extensive monitoring program carriedout by the Spanish Marine Safety Agency after thePrestige heavy oil spill (November 13, 2002). The GC FPD/FID and comprehensive GC × GC/TOFMS sample profilesrevealed the main characteristics of the oil residues. Chemicalfingerprinting of the aliphatic and aromatic fractions by GC/MS was performed to determine the source of the oilas well as to follow its weathering at sea. The (n-C₁₃ + n-C₁₄)/(n-C₂₅ + n-C₂₆), n-C₁₈/phytane, and methylnaphthalene[(N + N1)/N2] ratios were found to be useful for assessingthe evaporation, biodegradation, and dissolution processes,respectively. Other indicators of more advanced degradation processes, including photo-oxidation, were unaltered,showing the low incidence of natural weatheringprocesses on the spilled heavy oil 1 year after theaccident. The survey also demonstrated the occurrenceof continued discharges of ballast waters at sea and theneed for a more stringent surveillance of the area, beyondaccidental oil spills.