Radionuclides contamination in fish in the exclusion zone of Chernobyl.

Author: Gudkov D.I., Kaglyan A.E., Kireev S.I., Nazarov A.B., Klenus V.G.

Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2008

ISSN: 0869-8031

DOI: 10.1134/S0869803108010049

Keywords: fish, soil, contamination 90sr 137cs, transuranic elements

Abstract: Observes the contamination of 90sr and 137 cs, as well as transuranic elements, in the organism of fish (specified by species) in the exclusion area of Chernobyl. The article also describes the migration of radionuclides from water bodies into soil.

URL: http://elibrary.ru/item.asp?id=9603820

POST-CHERNOBYL HYDROSPHERE OF BELARUS WITHIN THE RADIOACTIVELY CONTAMINATED TERRITORIES (retrospective review)

Author: Kudelsky A. V., Smith J. T., Pashkevich V. I.

Reference:  Nauka, 2012

ISSN: 0869-7803

Keywords:  CHERNOBYL CATASTROPHE,   HYDROSPHERE,   RADIOACTIVE CONTAMINATION,   STATE AND PROGNOSIS

Abstract: The retrospective review of scientific investigations of the Belarus hydrosphere within the radioactively contaminated territories is presented for 1986-2005. The area under consideration occupies more than 35 000 km2 with contamination levels 37-1480 kBq/m2 for 137Cs and 22-111 kBq/m2 for 90Sr. Wide-range variations in average vertical velocity (0.11-2.66 cm/yr) and coefficient of quasidiffusion (0.01-1.4 cm2/yr) of radiocaesium migration in soils have been observed. A statistically significant tendency of decreasing with time the radionuclide migration parameters in automorphic soddy-podzolic soils within the over floodplain river terraces was revealed. The levels of groundwater contamination varied within 0.02-0.58 Bq/l for 137Cs and 0.02-0.18 Bq/l for 90Sr. The behavior of Chernobyl-derived 137Cs and 90Sr in hydrologically isolated bog systems within the catchment area of the Pripyat River as well as radionuclide pollution of the water fl ows of Dnieper, Pripyat, Sozh, Besed, Iput Rivers are considered. Dynamics of decreasing the average annual radionuclide activity concentrations and their variations during spring-autumn high water levels is demonstrated. Simplifi ed dynamic model for predicting the radionuclide activity concentrations in the river water following the large-scale radionuclide contamination is considered.

URL: http://elibrary.ru/item.asp?id=18060468