The content of accidental radionuclides in mushrooms from the 30-km zone of Chernobyl Nuclear Power Station [Russian]

摘要

The dynamics of the content of accidental radionuclides in B. edulis, S. luteus, X. badius was studied in the territory of 30-km zone of ChNPP (polygon much less thanDitjatkymuch greater than) from 1986 to 2002. In 1986 the following much less thanchernobylmuch greater than radionuclides were found in mushrooms: Cs-137, (CS)-C-134, Ru-103, Ru-106, Ce-144, Zr-95, Nb-95. Since the maiden months after the accident the specific features of accumulation of radionuclides are marked. Since 1987 the main contribution to the total specific activity of radionuclides in mushrooms is due to Cs-137 and Cs-134. From 1986 to 2000 Cs-137 content in S. luteus and X. badius was more, than in B. edulis. In 2001 and 2002 the change of the ratio of the content of radiocaesium in these kinds of mushrooms is marked. Such change is connected, probably, with the depth of mycelium localization in soil and deposition of the center of main storage of radiocaesium in it. [References: 14]