Characteristic of pollution with groundwater inflow (90)Sr natural waters and terrestrial ecosystems near a radioactive waste storage.
The studies were conducted in the territory contaminated by (90)Sr with groundwater inflow as a result of leakage from the near-surface trench-type radioactive waste storage. The vertical soil (90)Sr distribution up to the depth of 2-3 m is analyzed. The area of radioactive contamination to be calculated with a value which exceeds the minimum significant activity 1 kBq/kg for the tested soil layers: the contaminated area for the 0-5 cm soil layer amounted to 1800 ± 85 m(2), for the 5-10 cm soil layer amounted to 300 ± 12 m(2), for the 10-15 cm soil layer amounted to 180 ± 10 m(2). It is found that (90)Sr accumulation proceeds in a natural sorption geochemical barrier of the marshy terrace near flood plain. The exposure doses for terrestrial mollusks Bradybaena fruticum are presented. The excess (90)Sr interference level was registered both in the ground and surface water during winter and summer low-water periods and autumn heavy rains.
Candidate of Biological Sciences, Department of Ecology, Obninsk Institute for Nuclear Power Engineering, Branch of the National Research Nuclear University MEPhI, Studgorodok, 1, 249040 Obninsk, Kaluga Region, Russian Federation. Electronic address: Lavrentyeva_G@list.ru.
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Lavrentyeva
D017753:Ecosystem; D060587:Groundwater; D011834:Radiation Monitoring; D013326:Strontium Radioisotopes / Q000032:analysis*; D014875:Water Pollutants, Radioactive / Q000032:analysis*
D013326:Strontium Radioisotopes; D014875:Water Pollutants, Radioactive
(90)Sr; Migration in soil; Storage of radioactive waste; Terrestrial molluscs; Water