Archives → 2018 → Vol. 58, No. 4 → pp. 395–405
Article
Evaluation of Destruction of Fuel Particles from Chernobyl Fall out on the Territory of Belarusian Part of the ChNPP Exclusion Zone
Zabrotski V.N. 1, Bondar Y.I.1, Kalinin V.N.1, and Sadchikov V.I. 1
1 The State Institution of Nature Conservation Research “Polessye State Radiation Ecological Reserve”, Khoiniki, Belarus
Abstract
Quantitative evaluation of the degree of destructive effects of fuel particles from Chernobyl fall-out on the territory of Belarusian part of the ChNPP exclusion zone is presented. The degree of destruction of fuel particles in soil samples taken in different places of the exclusion zone in the period from 2008 to 2013 varies in a relatively narrow range of 82–94%, although the density of radioactive contamination of these places by TUE differs in the range of more than three orders of magnitude. Taking into account the value of a mean diameter of fuel particles presented in literature, the evaluation of their concentration in the upper 20 cm layer of soil and bottom sediment was fulfilled. A substantially higher preservation of fuel particles in the bottom sediment (up to 78%) is explained by the low dissolved oxygen concentration at the bottom of the pond. According to the results received, fuel particles continue to be a substantial factor determining the radiological situation in the exclusion zone at present.
Keywords
Chernobyl, Fuel particle, 239,240Pu, 241Am; Alpha-spectrometry, Carbonate leaching
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