Sandimirov S. Screening studies of POP levels in fish from selected lakes in the Paz watercourse / In State of the environment in the Norwegian, Finnish and Russian border area. The Finnish Environment. Finland, Jyvaskyla: Kopijyva Oy. 2007, №6.

Screening studies o f POPs in fish from the Paz watercourse 1.5 Figure 5. Distribution o f ZHCH hepatic levels infish from the study area 5.1.2. Polychlorinated biphenyl (PCBs) levels PCBs were first manufactured in 1929 and produced in many countries including the U.S., China, Slovakia, Germany, Japan, Russia and the United Kingdom. PCBs have been used extensively in a variety of industrial products, including transformer and capacitor oils, hydraulic and heat exchange fluids, and as plasticisers in paints, plastics and sealants, and even to control dust on roads. In Russia, production of PCBs was terminated between 1987 and 1993. Total production of PCBs in Russia by “Orgsteklo” Ltd. Production Amalgamation (Dzerzhinsk) and “Orgsintez” Ltd. Production Amalgamation (Novomoskovsk) has been estimated at 179 500 tonnes. After a PCB inventory in the Russian Federation (AMAP, 2000), the Murmansk region was highlighted as one of the priority areas for remedial actions. OSPAR and EU regulations aim at a complete phase-out of residual PCB-containing equipment and materials in the period between 1995 and 2010. However, not all PCBs in smaller applications, in particular in electrical equipment, may be removed within that period (OSPAR, 2000). PCB levels in fish from the Pasvik area and Lake Stuorajavri are presented in Tables 3.3. and 3.4, Appendix 3. The distribution of PCBs in fish from the study area is shown in Figure 6. PCB concentrations were highest in liver of pike (283 ng/g ww) and whitefish (150 ng/g ww) from Lake Kuetsjarvi. Akvaplan-niva report APN 514-3365.02 14