Natural Hydrocarbon Background in Benthic Sediments of Prince William Sound, Alaska: Oil vs Coal

The source of the background hydrocarbons in benthic sediments of Prince William Sound (PWS), AK, where the 1989 Exxon Valdez oil spill (EVOS) occurred, has been ascribed to oil seeps in coastal areas of the Gulf of Alaska (GOA). We present evidence that coal is a more plausible source, including (i...

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Veröffentlicht in:	Environmental Science and Technology 1999-01, Vol.33 (1), p.34-42
Hauptverfasser:	Short, Jeffrey W, Kvenvolden, Keith A, Carlson, Paul R, Hostettler, Frances D, Rosenbauer, Robert J, Wright, Bruce A
Format:	Artikel
Sprache:	eng
Schlagworte:	01 COAL, LIGNITE, AND PEAT 02 PETROLEUM ALASKA Applied sciences BIOLOGICAL ACCUMULATION BIOLOGY AND MEDICINE, APPLIED STUDIES COAL Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics ESTUARIES Exact sciences and technology Hydrocarbons Mytilidae Oil OIL SPILLS Pollution POLLUTION SOURCES Pollution sources. Measurement results Pollution, environment geology POLYCYCLIC AROMATIC HYDROCARBONS SALMON Salmonidae SEDIMENTS Soil and sediments pollution USA, Alaska, Prince William Sound WATER POLLUTION Waterways
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Zusammenfassung:	The source of the background hydrocarbons in benthic sediments of Prince William Sound (PWS), AK, where the 1989 Exxon Valdez oil spill (EVOS) occurred, has been ascribed to oil seeps in coastal areas of the Gulf of Alaska (GOA). We present evidence that coal is a more plausible source, including (i) high concentrations of total PAH (TPAH), between 1670 and 3070 ng/g, in continental shelf sediments adjacent to the coastal region containing extensive coal deposits; (ii) PAH composition patterns of sediments along with predictive models that are consistent with coal but not oil; (iii) low ratios (
ISSN:	0013-936X 1520-5851
DOI:	10.1021/es980130w