The results of the behavior of 137Cs and 90Sr of Chernobyl fallouts in different types of soils distributed over a wide territory in the contaminated Belarusian areas including 30 km zone around the Chernobyl are presented in the paper. The advective-dispersion equation was applied to quantify rates of vertical migration of radioisotopes through the soil profile and to predict the time of maximum (peak) activity transport of the radioisotopes in groundwater. Monitoring data of 137Cs and 90Sr-activity in groundwater and deeper aquifer horizons (Quaternary, Paleogene and Upper Cretaceous) allowed to estimate their contemporary contamination in comparison with drinking water standard in Belarus and background activity before accident. It was established that 137Cs and 90Sr-activity in groundwater remains high, especially if the non-threshold hypothesis of dose-effect relationship in the context of impact of low levels radiation on the population is taken into account.
|Number of pages||6|
|Journal||Polish Geological Institute Special Papers|
|Publication status||Published - 2008|
- Aquifer horizons
- Migration in soils