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THE VALUE OF USING MULTIPLE METRICS TO EVALUATE PCB EXPOSURE
Archer, M.C., A.D. Harwood, S.A. Nutile, K.E. Huff Hartz, M.A. Mills, J.E. Garvey, and M.J. Lydy.
Archives of Environmental Contamination and Toxicology 74(3):361-371(2018)

At a small lake contaminated with PCBs, multiple metrics were utilized to evaluate exposure to multiple trophic levels as well as contaminant transport within and outside the lake. The PCBs were localized to sediments in one area of the lake that served as the source of PCBs to aquatic invertebrates, emerging insects, and fish and terrestrial spiders in the riparian ecosystem. The Tenax extractable and biota PCB concentrations indicated tissue concentrations were localized to benthic invertebrates and riparian spiders in a specific cove, whereas fish data showed that fish throughout the lake had PCB tissue concentrations, leading to wider exposure risk. The inclusion of PCB exposure measures at several trophic levels provided multiple lines of evidence to the scope of exposure through the aquatic and riparian food web, which aided in assessing risk and developing potential future remediation strategies. https://aquatictox.siu.edu/wp-content/uploads/2018/07/Archer-PCB-campus-lake-Archives-2018.pdf



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