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 Results from toxaphene analyses in fish from the study area are summarise in Tables 3.5 and 3.6 ., Appendix 3. The toxaphene distribution in hepatic tissues of fish from the study area is shown in Figure 7. The highest toxaphene levels were detected in liver from pike from Kuetsjarvi (139 ng/g ww) and in liver from whitefish from Tj^rebukta (31 ng/g ww). Figure 7. Distribution o f Toxaphene hepatic levels infish from the study area Exposure and effects: Exposure may occur via food intake and drinking water from contaminated wells. At high exposures, toxaphene has been associated with kidney and liver damage, central nervous system effects, possible immune system suppression, and cancer (ATSDR, www.atcdr.cdc.gov/toxprofiles). IARC has classified toxaphene as a possible human carcinogen (group 2B) (IARC, 1987). Polychlorinated dibenzo-p-dioxines and dibenzofurans (PCDD/PCDF) Neither dioxins nor furans are produced commercially because they have no known use. These are by-products resulting from the production of other chemicals. Dioxins may also be released into the environment through the production of pesticides and other chlorinated substances. Furans are a major contaminant of PCBs. Both dioxins and furans can be produced during a variety of incineration reactions, and as a by-product in the synthesis and use of a variety of chemical products. Dioxins and furans have been detected in emissions from the incineration of coal, peat and wood, as well as from the incineration of wastes. Akvaplan-niva report APN 514-3365.02 16