NDLI: Fate of polychlorinated biphenyls in a contaminated lake ecosystem: combining equilibrium passive sampling of sediment and water with total concentration measurements of biota.

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Fate of polychlorinated biphenyls in a contaminated lake ecosystem: combining equilibrium passive sampling of sediment and water with total concentration measurements of biota.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Mäenpää, Kimmo Leppänen, Matti T. Figueiredo, Kaisa Mayer, Philipp Gilbert, Dorothea Jahnke, Annika Gil-Allué, Carmen Akkanen, Jarkko Nybom, Inna Herve, Sirpa
Description	Country affiliation: Finland Author Affiliation: Mäenpää K ( Department of Biology, University of Eastern Finland, Joensuu, Finland.); Leppänen MT ( Department of Biology, University of Eastern Finland, Joensuu, Finland.); Figueiredo K ( Laboratory Centre, Finnish Environment Institute, Jyväskylä, Finland.); Mayer P ( Department of Biology, University of Eastern Finland, Joensuu, Finland.); Gilbert D ( Department of Environmental Science, Aarhus University, Roskilde, Denmark.); Jahnke A ( Department of Environmental Engineering, Technical University of Denmark, Lyngby, Denmark.); Gil-Allué C ( Department of Biology, University of Eastern Finland, Joensuu, Finland.); Akkanen J ( Department of Environmental Science, Aarhus University, Roskilde, Denmark.); Nybom I ( Department of Cell Toxicology, Helmholtz Centre for Environmental Research, Leipzig, Germany.); Herve S ( Department of Biology, University of Eastern Finland, Joensuu, Finland.)
Abstract	Equilibrium sampling devices can be applied to study and monitor the exposure and fate of hydrophobic organic chemicals on a thermodynamic basis. They can be used to determine freely dissolved concentrations and chemical activity ratios and to predict equilibrium partitioning concentrations of hydrophobic organic chemicals in biota lipids. The authors' aim was to assess the equilibrium status of polychlorinated biphenyls (PCBs) in a contaminated lake ecosystem and along its discharge course using equilibrium sampling devices for measurements in sediment and water and by also analyzing biota. The authors used equilibrium sampling devices (silicone rubber and polyethylene [PE]) to determine freely dissolved concentrations and chemical activities of PCBs in the water column and sediment porewater and calculated for both phases the corresponding equilibrium concentrations and chemical activities in model lipids. Overall, the studied ecosystem appeared to be in disequilibrium for the studied phases: sediment, water, and biota. Chemical activities of PCBs were higher in sediment than in water, which implies that the sediment functioned as a partitioning source of PCBs and that net diffusion occurred from the sediment to the water column. Measured lipid-normalized PCB concentrations in biota were generally below equilibrium lipid concentrations relative to the sediment (CLip âSed ) or water (CLip âW ), indicating that PCB levels in the organisms were below the maximum partitioning levels. The present study shows the application versatility of equilibrium sampling devices in the field and facilitates a thermodynamic understanding of exposure and fate of PCBs in a contaminated lake and its discharge course.
File Format	HTM / HTML
ISSN	07307268
Issue Number	11
Volume Number	34
e-ISSN	15528618
Journal	Environmental Toxicology and Chemistry
Language	English
Publisher	Wiley
Publisher Date	2015-11-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Water Pollutants, Chemical Research Support, Non-u.s. Gov't Environmental Monitoring Discipline Environmental Health Biota Discipline Toxicology Polychlorinated Biphenyls Metabolism Oligochaeta Journal Article Geologic Sediments Chemistry Animals Bivalvia Analysis Lakes Discipline Chemistry
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis

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