Archives → 2018 → Vol. 58, No. 2 → pp. 183-194
Article
Radionuclides in Soil in the Areas of Forest Fires on the Territory of the Exclusion Zone in the Republic of Belarus
Sadchikov V.I.1, Bondar Yu. I.1, Zabrotski V.N.1, Kalinin V.N.1, Brown J.E.2, Dowdall M.2
1 The State Institution of Nature Conservation Research "Polessye State Radiation Ecological Reserve", Choyniki, Republik of Belarus
2 Norwegian Radiation Protection Authority (NRPA), Osteraas, Norway
Abstract
The redistribution of 137Cs, 90Sr, 241Am in soil in the areas of forest fires on the territory of the Belarusian sector of the Chernobyl exclusion zone is considered. The change of distribution of radionuclides through the vertical soil profile due to fires is shown. The character and degree of these changes depend on the migration ability of the radionuclide, soil characteristics and the type and intensity of the fire. The crown fire results in the carry-over of radionuclides into the environment. The calculated values of the radionuclide carry-over to the atmosphere are the following: 137Cs — 21%, 90Sr — 10.5%, 241Am — 7.3%. It is shown that at the sites of the fire radionuclides migrate from the lower into upper soil layers. Also considered is the reason for the rise of water soluble and exchangeable forms of radionuclides during fires from the depth into the near-surface soil in the areas of fires.
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