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 dyes. Production and use has ceased in many countries. HCB continues to be created as a by­ product in the manufacture of many chlorinated solvents and pesticides and in other chlorinated processes. It is also released in the burning of municipal waste, during incomplete combustion. HCB has also limited use as a pesticide. In Russia, HCB was used until 1990, and was banned in 1997. The highest levels of HCB were detected in pike and whitefish from Lake Kuetsjarvi (Table 3.1., Appendix 3). Geographical distribution of HCB levels in fish liver from the study area is shown in Figure 3. 2.8 Figure 3. Distribution o fHCB hepatic levels infish from the study area Exposure and effects: Contaminated food is probably the major route of exposure for most organisms. HCB is toxic by all routes of exposure and can damage the liver, thyroid, kidney, as well as the endocrine, immune, reproductive, and nervous systems. The evidence for carcinogenicity of HCB in humans is considered inadequate, because no documentation of a direct association between HCB and human cancer exists (IARC, 2001). In Russia currently accepted HCB ADI is 0.0006 mg/kg of body weight (Hygienic norms, 2003). Maximum permissible concentration of HCB in freshwater fish is not established in Russia. Akvaplan-niva report APN 514-3365.02 11