Levels of polychlorinated biphenyls (PCB) in fish from the lakes of the Warmia and Mazury region

The term polychlorinated biphenyls, or PCBs refers to a class of synthetic organic chemicals that are, to a large degree, chemically inert. PCBs are not found in a nature as a natural compounds and its appearance in natural environment is connected with unintentional and irresponsible human activity. PCBs have been produced on an industrial scale for more than 50 years and have been exported as chemicals in products to almost every country in the world. PCBs were commonly used as dielectric fluids in transformers and capacitors, in heat transfer and hydraulic systems. Other uses of PCBs included the formulation of lubricating and cutting oils, as plasticisers in paints. Nowadays PCBs are ranked among the compounds called POP (Persistent Organic Pollutants). This group of hazard removable pollutants includes pesticides, dioxins and furans also. This study investigated fish fished from August 2006 to December 2007 from lakes in northeast Poland: Lanskie, Kisajno and Niegocin. The investigations were carried out on four fish species: roach, common bream, perch and pike. According to the preliminary mass and length measurements anticipatory treatment were realised. Subsequently fishes were analysed in accordance with National Institute of Hygiene method. According to the investigations results PCBs were found in fish muscular tissues, fished from northeast lakes. PCB level didn’t exceed the highest acceptable daily dose (4pg-TEQ body mass/day).

Authors: Dymkowska-Malesa, Maria; Plawgo, Agnieszka; Walczak, Zbigniew ;Full Source: Journal of Environmental Science and Engineering A 2012, 1(2), 250-255 (English) ;