Document Detail

Differential accumulation of polychlorinated biphenyl congeners in the aquatic food web at the Kalamazoo River Superfund site, Michigan.
MedLine Citation:
PMID:  16173552     Owner:  NLM     Status:  MEDLINE    
A series of field studies were conducted to gain a better understanding of the bioaccumulation and dynamics of polychlorinated biphenyl (PCB) congeners in the aquatic food web of the Kalamazoo River flood plain. Representative species of passerine birds, mammals, fish, aquatic plants, invertebrates, and colocated sediments were collected from areas located within submerged portions of the former Trowbridge impoundment and also from areas located at an upstream reference location. In most matrixes, total concentrations of PCBs were significantly greater in the downstream study area compared to the upstream reference location. Patterns of PCB congeners varied among trophic levels due to selective bioaccumulation of more chlorinated congeners in upper trophic level organisms. There were no statistically significant differences in total PCB concentrations among sampling grids within either site or temporally among three sampling seasons between May and September. The greatest total PCB concentrations were detected in adult tree swallows (mean = 8.7 mg/kg wet weight (ww)) and fish (mean = 4.4 mg/ kg ww) collected from the former Trowbridge impoundment. Concentrations of total 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TEQs) were greatest in egg, nestling, and adult tree swallows collected from the former Trowbridge impoundment. There was not a significant correlation between concentrations of total PCBs and TEQs at either site in the mammalian or avian food webs. The relative potency of the mixture of PCBs, expressed as the ratio of TEQs to total PCBs, increased with trophic position in the avian and mammalian aquatic food webs located within the former Trowbridge impoundment.
Denise P Kay; Alan L Blankenship; Katherine K Coady; Arianne M Neigh; Matthew J Zwiernik; Stephanie D Millsap; Karl Strause; Cyrus Park; Patrick Bradley; John L Newsted; Paul D Jones; John P Giesy
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental science & technology     Volume:  39     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2005 Aug 
Date Detail:
Created Date:  2005-09-21     Completed Date:  2005-12-14     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:  5964-74     Citation Subset:  IM    
ENTRIX, Inc., 4295 Okemos Road, Suite 101, Okemos, Michigan 48864, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Environmental Monitoring
Environmental Pollutants / metabolism,  pharmacokinetics*
Food Chain*
Geologic Sediments
Hazardous Waste*
Polychlorinated Biphenyls / metabolism,  pharmacokinetics*
Tissue Distribution
Water Pollutants, Chemical / metabolism,  pharmacokinetics*
Reg. No./Substance:
0/Environmental Pollutants; 0/Hazardous Waste; 0/Polychlorinated Biphenyls; 0/Water Pollutants, Chemical

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Differential accumulation of polychlorinated biphenyl congeners in the terrestrial food web of the K...
Next Document:  Assessment of degradation pathways in an aquifer with mixed chlorinated hydrocarbon contamination us...