Slightly Weathered Exxon Valdez Oil Persists in Gulf of Alaska Beach Sediments after 16 Years
| Autor: | Jeffrey W. Short, Jacek M. Maselko, Daniel H. Mann, Mandy R. Lindeberg, Jerome J. Pella, James R. Payne, William B. Driskell, Gail V. Irvine, Stanley D. Rice |
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| Rok vydání: | 2007 |
| Předmět: |
Pollution
Geologic Sediments media_common.quotation_subject Weathering History 21st Century chemistry.chemical_compound Alkanes Environmental Chemistry Polycyclic Aromatic Hydrocarbons Water pollution Ships media_common Plage Persistent organic pollutant Sediment General Chemistry History 20th Century Petroleum Oceanography chemistry Accidents Environmental science Environmental Pollutants Alaska Environmental Monitoring |
| Zdroj: | Environmental Science & Technology. 41:1245-1250 |
| ISSN: | 1520-5851 0013-936X |
| Popis: | Oil stranded by the 1989 Exxon Valdez spill has persisted in subsurface sediments of exposed shores for 16 years. With annualized loss rates declining from approximately 68% yr(-1) prior to 1992 to approximately 4% yr(-1) after 2001, weathering processes are retarded in both sediments and residual emulsified oil ("oil mousse"), and retention of toxic polycyclic aromatic hydrocarbons is prolonged. The n-alkanes, typically very readily oxidized by microbes, instead remain abundant in many stranded emulsified oil samplesfrom the Gulf of Alaska. They are less abundant in Prince William Sound samples, where stranded oil was less viscous. Our results indicate that, at some locations, remaining subsurface oil may persist for decades with little change. |
| Databáze: | OpenAIRE |
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