Strontium-90 in fish from the lakes of the Chernobyl Exclusion Zone

The radionuclide contamination of fishes from the Glubokoye and Dalekoye-1 Lakes (left-bank flood lands of the Pripyat River), Azbuchyn Lake and Yanovsky Crawl (right-bank flood lands of the Pripyat River), Pripyat River (near by Chernobyl town) and the main area of the Kyiv reservoir on a modern stage are explored and analyzed. The percentage of 90Sr is shown in organs and fabrics of different fishes by the state on 2005–2007

Gamma activity as a guide for the building raw materials selection and controlling the environmental hazards

Results of the specific activity of 90Sr and 137Cs estimation at the indigenous representatives of fish fauna in water bodies of the Chernobyl exclusion zone are presented during 2006 - 2011. The data of species specificity of radionuclide accumulation and distributing in different organs and tissues of pray and predatory fishes in water bodies with different hydrological regime and level of radioactive contamination are analyzed. The size, weight and age dynamics of radionuclide accumulation in fish are evaluated. It is note, that presently 90Sr is main dose-formed radionuclide for fishes of stagnant water bodies of the Chernobyl exclusion zone

Accumulation of 90Sr by the representatives of pray fish in water basins of Chornobyl exclusion zone and other water basins of Ukraine

The results of studies of radioactive contamination of fishes’ organs and tissues of different ecological groups in water basins within the Chоrnobyl exclusion zone and other water basins of Kyiv region & Pokuttya have presented. During last years a continuing decrease of 90Sr specific activity in ichthyofauna representatives of all Ukrainian water basins was registered. The exception are the pray fish species of closed water basins of the Chоrnobyl exclusion zone where the 90Sr content remains at a certain high level. It is shown, that 90Sr for present time is the main dose-formed radionuclide for fish of the majority of water bodies within the Chornobyl exclusion zone