Differential Accumulation of Polychlorinated Biphenyl Congeners in the Aquatic Food Web at the Kalamazoo River Superfund Site

The accumulation of PCBs in the aquatic food web at the Kalamazoo River Superfund Site in Michigan was determined. Sediment, aquatic plant, benthic invertebrate, aquatic emergent insect, fish, tree swallow, mink, and muskrat samples were collected within the former Trowbridge impoundment and upstrea...

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Bibliographic Details
Published in:Environmental science & technology 2005-08, Vol.39 (16), p.5964-5964
Main Authors: Kay, Denise P, Blankenship, Alan L, Coady, Katherine K, Neigh, Arianne M, Zwiernik, Matthew J, Millsap, Stephanie D, Strause, Karl
Format: Article
Language:English
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Summary:The accumulation of PCBs in the aquatic food web at the Kalamazoo River Superfund Site in Michigan was determined. Sediment, aquatic plant, benthic invertebrate, aquatic emergent insect, fish, tree swallow, mink, and muskrat samples were collected within the former Trowbridge impoundment and upstream at the Fort Custer State Recreation Area. Results showed selective bioaccumulation of more-chlorinated congeners in upper-tropic-level organisms. The biota sediment accumulation factors were higher at the reference site than at the PCB-impacted site, which suggested reduced bioavailability or other kinetic limitations to uptake at the latter. The concentration of total PCBs and the toxicity of total PCBs, as indicated by toxic equivalence concentrations, generally increased with increasing trophic position. All relevant concentration data are tabulated.
ISSN:0013-936X