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Occurrence and distribution of semivolatile organic compounds in stream bed sediments, United States, 1992-95

Environmental toxicology and risk assessment 1333

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, , and
Edited by:
Edward E. Little, Bruce M. Greenberg, and Aaron J. DeLonay

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Abstract

Bed-sediment samples from streams were collected from 443 sites in 19 major river basins during 1992-95 and analyzed for semivolatile organic compounds (SVOCs) to assess the occurrence and distribution of selected Hydrophobic contaminants. Forty SVOCs were detected in more than 5 percent of samples. Of these 40 SVOCs, 27 were polycyclic aromatic hydrocarbons (PAHs), 5 were azaarenes, 5 were phthalates, 2 were phenols, and 1 was a quinone. Statistically higher concentrations of the sum of PAHs, azaarenes, and phthalates were measured in samples from urban drainage basins in comparison to other land uses. The frequency of detection and concentrations of PAHs, azaarenes, and phthalates were highest in the northeastern part and lowest in the western part of the United States. Concentrations of the sum of PAHs and sum of phthalates had statistically significant, but weak, correlations with toxic releases to air, population density, and urban land use. Urban activities could be significant sources and the atmosphere could be a significant transport mechanism affecting the distribution of certain SVOCs.

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Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Occurrence and distribution of semivolatile organic compounds in stream bed sediments, United States, 1992-95
Series title:
Environmental toxicology and risk assessment
Series number:
1333
Volume
7
Year Published:
1998
Language:
English
Publisher:
American Society for Testing and Materials
Publisher location:
West Conshohocken, PA
Description:
15 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Environmental toxicology and risk assessment
First page:
105
Last page:
119
Country:
United States