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Environ Toxicol Chem


Title:"Occurrence and potential adverse effects of semivolatile organic compounds in streambed sediment, United States, 1992-1995"
Author(s):Lopes TJ; Furlong ET;
Address:"U.S. Geological Survey, Carson City, Nevada 89706, USA. tjlopes@usgs.gov"
Journal Title:Environ Toxicol Chem
Year:2001
Volume:20
Issue:4
Page Number:727 - 737
DOI:
ISSN/ISBN:0730-7268 (Print) 0730-7268 (Linking)
Abstract:"The occurrence and potential adverse effects of select semivolatile organic compounds (SVOCs) in streambed sediment were assessed at 536 sites in 20 major river basins across the United States from 1992 to 1995. Fifty-six SVOCs were detected at one or more sites, and one or more SVOCs were detected at 71% of sites. The northeastern and Great Lakes regions and large metropolitan areas have the highest SVOC concentrations. Polycyclic aromatic hydrocarbons (PAHs) were detected most frequently and at the highest concentrations. Concentrations of PAHs and phthalates were about 10 times higher at sites influenced by urban activities than at sites in other land-use areas. Semivolatile organic compounds were significantly (alpha = 0.05) correlated with land use and population density, and PAHs also correlated with physical/chemical properties. On the basis of sediment-quality guidelines, adverse effects are probable at 7.5% and possible at 16.2% of the sites. Most of the potential for adverse effects is due to PAHs. The median percentage of urban land use was 8% at sites with possible adverse effects and 16% at sites with probable adverse effects. Urbanization profoundly affects sediment quality, even though it comprised a small percentage of most drainage basins"
Keywords:"Agriculture Automation/methods Chromatography, Gel/methods Environmental Pollutants/analysis Fresh Water Geography Geologic Sediments/*analysis Naphthalenes/analysis Organic Chemicals/*analysis Phthalic Acids/analysis Polycyclic Aromatic Hydrocarbons/anal;"
Notes:"MedlineLopes, T J Furlong, E T eng 2001/05/10 Environ Toxicol Chem. 2001 Apr; 20(4):727-37"

 
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