title: Hydroxylated polychlorinated biphenyls in the environment: sources, fate, and toxicities.
abstract: Hydroxylated polychlorinated biphenyls (OH-PCBs) are produced in the environment by the oxidation of PCBs through a variety of mechanisms, including metabolic transformation in living organisms and abiotic reactions with hydroxyl radicals. As a consequence, OH-PCBs have been detected in a wide range of environmental samples, including animal tissues, water, and sediments. OH-PCBs have recently raised serious environmental concerns because they exert a variety of toxic effects at lower doses than the parent PCBs and they are disruptors of the endocrine system. Although evidence about the widespread dispersion of OH-PCBs in various compartments of the ecosystem has accumulated, little is currently known about their biodegradation and behavior in the environment. OH-PCBs are, today, increasingly considered as a new class of environmental contaminants that possess specific chemical, physical, and biological properties not shared with the parent PCBs. This article reviews recent findings regarding the sources, fate, and toxicities of OH-PCBs in the environment.
authors: Department of Civil and Environmental Engineering, Temple University, Philadelphia, PA, 19122, USA.
authors: Rouzbeh
authors: R
authors: Tehrani
authors: Benoit
authors: B
authors: Van Aken
mesh_terms: D000818:Animals; D001673:Biodegradation, Environmental; D004777:Environment; D004785:Environmental Pollutants / Q000032:analysis* / Q000633:toxicity; D004787:Environmental Pollution / Q000032:analysis* / Q000706:statistics & numerical data; D006900:Hydroxylation; D010084:Oxidation-Reduction; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000633:toxicity
chemical_list: D004785:Environmental Pollutants; D011078:Polychlorinated Biphenyls
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