Polychlorinated Dibenzo-p-dioxin and Dibenzofuran Concentration Profiles in Sediments and Flood-Plain Soils of the Tittabawassee River, Michigan

Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) in sediments and flood-plain soils collected along the Tittabawassee River in Michigan ranged from 102 to 53 600 pg/g, dry wt. Mean PCDD/PCDF concentrations in downstream sediment and soil were from 10- to 20-fold...

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Bibliographic Details
Published in:Environmental science & technology 2003-02, Vol.37 (3), p.468-474
Main Authors: Hilscherova, Klara, Kannan, Kurunthachalam, Nakata, Haruhiko, Hanari, Nobuyasu, Yamashita, Nobuyoshi, Bradley, Patrick W, Mccabe, John M, Taylor, Allan B, Giesy, John P
Format: Article
Language:English
Subjects:
Applied sciences
Benzofurans - analysis
Bioassays
Dibenzofurans, Polychlorinated
Dioxins
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Environmental Monitoring
Exact sciences and technology
Freshwater
Geologic Sediments - chemistry
Hydrocarbons
Industry
Michigan
PCB
Pollution
Pollution sources. Measurement results
Pollution, environment geology
Polychlorinated biphenyls
Polychlorinated Dibenzodioxins - analogs & derivatives
Polychlorinated Dibenzodioxins - analysis
Principal components analysis
Rivers
Sediments
Soil and sediments pollution
Soil Pollutants - analysis
Soils
Water Movements
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Summary:Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) in sediments and flood-plain soils collected along the Tittabawassee River in Michigan ranged from 102 to 53 600 pg/g, dry wt. Mean PCDD/PCDF concentrations in downstream sediment and soil were from 10- to 20-fold greater than those found at locations upstream of Midland, Michigan. Concentrations of PCDD/PCDF in sediments and flood-plain soils from the Tittabawassee watershed were comparable to those found in industrialized areas such as the Housatonic and lower Passaic Rivers in the U.S. Concentrations of PCDDs/PCDFs in soil and sediment were not correlated with total organic carbon (TOC) in sediments or soils. OCDD and 2,3,7,8-TeCDF were the predominant congeners in sediment/soil collected from locations downstream of Midland, Michigan. Principal component analysis of the PCDD/PCDF congener profile suggested the presence of sources originating from a mixture of chlorophenol and other chlorinated compound production. Mass balance analysis of TCDD equivalents (TCDD-EQs) derived from H4IIE-luc bioassay of sediment extracts and 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TEQs) estimated from instrumental analysis suggested that PCDDs/PCDFs were the major dioxin-like compounds present in sediments. A significant correlation existed between bioassay-derived TCDD-EQs and instrumentally measured TEQs (r  2 = 0.94).
ISSN:0013-936X
1520-5851
DOI:10.1021/es020920c