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HP6 Emerging Pollutants
() Distribution of hydroxylated PCBs in fish from Canadian Areas of Concern around the Laurentian Great Lakes.
Ueno, Daisuke1, Campbell, Linda2, Darling, Colin1, Pacepavicius, Grazina1, Alaee, Mehran1, Muir, Derek1, Brown, S.1, 1 National Water Research Institute, Environment Canada, Burlington, Ontario, Canada2 School of Environmental Studies, Queen's University, Kingston, Ontario, Canada
ABSTRACT- Areas of Concern (AOC) are designated sites around the Laurentian Great Lakes that have experienced heavy anthropogenic impacts and resulting high contaminant concentrations. As a part of a large project to evaluate endocrine status of fish from Canadian AOC sites, brown bullhead (Ameiurus nebulosus ) and other fish species were collected. Because of their potential disruptive effects on mammalian and fish endocrine systems, hydroxylated PCBs (OH-PCBs) were included in the analysis suite. In 2001 to 2003, brown bullheads were sampled from a number of AOC sites and their associated reference sites. The dominant OH-PCB congener in most fish was the 4-OH-CB187, a heptachlorobiphenylol. Homolog analyses indicated that brown bullheads from Wheatley Harbor and its associated reference site, Hillman Marsh included tetrachlorobiphenylols to heptachlorobiphenylols, while Detroit River bullheads tended to contain only tetra- and pentachlorobiphenylols, with some trichlorobiphenylols observed in a few individuals. No mono- or dichlorobiphenylols were measured at current detection limits. Congener and homolog patterns in PCBs and OH-PCBs in brown bullheads from different AOC sites will be compared with each other and with those for other fish species and lakes.
Key words: phenolic compounds, OH-PCB, bioaccumulation, fish
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