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Bioaccumulation of PCBs in Aquatic Biota from a Tidal Freshwater Marsh Ecosystem

  • B. S. Crimmins
  • P. Doelling Brown
  • D. P. Kelso
  • G. D. Foster

Abstract

Water, sediments, and aquatic biota were sampled in a tidal river-marsh on the Potomac River near Washington, DC (USA) to assess baseline concentrations of polychlorinated biphenyls (PCBs) and bioaccumulation in finish species. The mean sediment total-PCB concentration in the wetland was 50 ng/g dry weight, and mean concentrations in biota ranged from 150 ng/g to 450 ng/g wet weight. The highest PCB concentrations were observed in channel catfish. The median biota-sediment accumulation factor (BSAF) estimated in all finfish species for total-PCBs was 2.9. However, some of the individual and co-eluting PCB congeners had median BSAFs that were substantially greater (e.g., congener numbers 42, 74, 182/187/128, and 171) or lower (e.g., congener numbers 18/15, 45, 185, and 208) than the total-PCB average. Apparent bioaccumulation factors (biota/water PCB concentration ratios) for PCB congeners showed a parabolic relation with n-octanol/water partition coefficients, confirming some previous investigations. There was no clear trend between apparent bioaccumulation factors and trophic level. Organic-carbon-normalized sediment distribution constants (sediment/water PCB concentration ratios) were linearly related to the apparent bioaccumulation factors for all the finfish species investigated.

Keywords

PCBs Biphenyl Bioaccumulation Channel Catfish Accumulation Factor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag New York Inc. 2002

Authors and Affiliations

  • B. S. Crimmins
    • 1
  • P. Doelling Brown
    • 1
  • D. P. Kelso
    • 2
  • G. D. Foster
    • 1
  1. 1.Department of Chemistry, MSN 3E2, George Mason University, Fairfax, VA 22030, USAUS
  2. 2.Department of Biology, MSN 3E1, George Mason University, Fairfax, VA 22030, USAUS

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