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Sorptive Capacity of Membrane Lipids, Storage Lipids, and Proteins: A Preliminary Study of Partitioning of Organochlorines in Lean Fish from A PCB-Contaminated Freshwater Lake
- Mäenpää, Kimmo, Leppänen, Matti T., Figueiredo, Kaisa, Tigistu-Sahle, Feven, Käkelä, Reijo
- Archives of environmental contamination and toxicology 2015 v.68 no.1 pp. 193-203
- food chain, freshwater, lakes, lean fish, lipids, models, organic compounds, proteins, risk assessment, tissues
- Knowledge on the internal distribution of halogenated organic chemicals (HOCs) would improve our understanding of dose–effect relationships and subsequently improve risk assessment of contaminated sites. Herein, we determine the concentrations of HOCs based on equilibrium partitioning in storage lipids, membrane lipids, and proteins in field-contaminated fish using equilibrium sampling devices. The study shows the importance of protein as a sorptive phase in lean fish. Our results provide a basis for using species-specific equilibrium partitioning coefficients between sorptive tissues and fish internal water as a substitute for Kₒwin, for example, upgrading models that simulate food-chain accumulation of the chemical.