| PCB loading from sediment in the Hudson River: congener signature analysis of pathways. | |
| | |
MedLine Citation:
|
PMID: 15260318 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The upper Hudson River (NY) was subjected to massive PCB contamination over a period of three decades. A large inventory of PCBs remains in contaminated sediments of the river, most notably in the Thompson Island Pool. During the summer, flow crossing the Thompson Island Pool exhibits a large and consistent PCB load gain. This load gain is not associated with scouring flows and is not accompanied by an increase in suspended solids. A variety of hypotheses have been proposed to explain this load gain, including flux of contaminated porewater and dissolution of unverified reservoirs of pure PCBs. A wealth of congener-specific PCB data is available for the site throughout the 1990s. Interpretation of the Thompson Island Pool load gain is facilitated by examination of the PCB congener signature of the gain and comparison to the signature of potential sources. This examination suggests that neither the flux of porewater nor the dissolution of unaltered Aroclors are the predominant source of the load gain. Instead, the congener signature is consistent with a mixed source consisting of porewater flux and non-scour flux of contaminated sediments. The non-scour sediment flux, which reaches a maximum in the beginning of the summer growing season, is likely driven by a variety of biological and anthropogenic processes, including bioturbation by benthic organisms, bioturbation by demersal fish, scour by propwash, mechanical scour by boats and floating debris in nearshore areas, and uprooting of macrophytes. |
| | |
Authors:
|
Jonathan B Butcher; Edward A Garvey |
Related Documents
:
|
14572098 - Occurrence and removal of estrogenic short-chain ethoxy nonylphenolic compounds and the... 15337348 - Health risk assessment of pcdd/f emissions from a hazardous and medical waste incinerat... 12371488 - Asia-pacific mussel watch: monitoring of butyltin contamination in coastal waters of as... 16053068 - Organochlorine contaminants in human adipose tissues from china: mass balance approach ... 19337878 - Longitudinal examination of the family food environment and weight status among children. 18939698 - Mermithids (nematoda: mermithidae) parasitizing different blackfly (diptera: simuliidae... |
Publication Detail:
|
Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
|
Title: Environmental science & technology Volume: 38 ISSN: 0013-936X ISO Abbreviation: Environ. Sci. Technol. Publication Date: 2004 Jun |
Date Detail:
|
Created Date: 2004-07-20 Completed Date: 2004-10-05 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 0213155 Medline TA: Environ Sci Technol Country: United States |
Other Details:
|
Languages: eng Pagination: 3232-8 Citation Subset: IM |
Affiliation:
|
Tetra Tech, Inc., P.O. Box 14409, Research Triangle Park, North Carolina 27709, USA. jon.butcher@tetratech.com |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Cities Environmental Monitoring Environmental Pollutants / analysis* Fishes Geologic Sediments / chemistry* Invertebrates New York Polychlorinated Biphenyls / analysis*, chemistry*, metabolism Seasons Ships Water Movements |
| Chemical | |
Reg. No./Substance:
|
0/Environmental Pollutants; 0/Polychlorinated Biphenyls |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Estimation of the production, consumption, and atmospheric emissions of pentabrominated diphenyl eth...
Next Document: Landscape-level approach to assess aquatic exposure via spray drift for pesticides: a case study in ...