Dioxins and furans in bed sediment and fish tissue of the Willamette Basin, Oregon, 1992-1995

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Title Dioxins and furans in bed sediment and fish tissue of the Willamette Basin, Oregon, 1992-1995
Creator Bonn, Bernadine, A
Subject Watersheds; Water quality; Pesticides; Sediments (Geology); Fishes
Spatial Coverage Columbia River; Oregon; Willamette River (Or.)
Description Dioxins and furans were found in bed sediment and fish tissue throughout the Willamette Basin, including samples from the most remote sites. The highest concentrations in bed sediment were found at sites where industrial or urban inputs were most likely; potential toxicity at these sites (as measured by toxicity equivalents concentration) was high enough to be associated with increased risk to sensitive mammalian wildlife. From 30 to 60 percent of the toxicity equivalents concentration in bed sediment was due to hepta- and octa- congeners, not 2,3,7,8-TCDD (2,3,7,8-tetrachlorodibenzo-p-dioxin), which was detected at only 6 of 22 sites. Compared to bed sediment from the same site, fish tissue usually had lower total concentrations of dioxins and furans, but contained a higher proportion of the most toxic congeners, such as 2,3,7,8-TCDD and 2,3,7,8-TCDF (2,3,7,8-tetrachlorodibenzofuran). Concentrations of dioxins and furans in bed sediment at most sites in agricultural and forested are
Publisher U.S. Geological Survey
Date 1998
Type Text
Format application/pdf
Digitization Specifications pdf file copied from USGS website (http://oregon.usgs.gov/pubs_dir/Pdf/97-4082d.pdf). Uploaded into CONTENTdm version 3.7.
Identifier http://oregon.usgs.gov/pubs_dir/Pdf/97-4082d.pdf
Source Dioxins and furans in bed sediment and fish tissue of the Willamette Basin, Oregon, 1992-1995, Portland Oregon: U.S. Geological Survey Water-Resources Investigations Report 97-4082-D, 15 p.
Language eng
Rights Management Public Domain, Courtesy of the USGS
Holding Institution University of Utah
Metadata Cataloger Daureen Nesdill; Kristin Willmore
ARK ark:/87278/s6ng4phr
Setname wwdl_er
Date Created 2004-11-03
Date Modified 2005-10-19
ID 1145731
Reference URL https://collections.lib.utah.edu/ark:/87278/s6ng4phr
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