¹³⁷Cs and ^239,240Pu activity concentrations distribution in waterlogged and non-boggy soils of Lithuania

Vertical distributions of 239,240 Pu and 137 Cs activity concentrations in the waterlogged non-boggy soil cores sampled vicinity Vilnius City Varėna District were analyzed. The radionuclides appeared soils mainly as a result fallout after nuclear weapon testing atmosphere 1960s due to Chernobyl NPP accident 1986. deposited on surface shores lakes experienced processes translocation accumulation, therefore their total column differs from soils. mobility plutonium is highest organic-rich Clay significantly limits migration radiocesium does not affect noticeably plutonium. Compared with radiocesium, somewhat limited. So, soils, radionuclide mobilizing factors act opposite directions for A clear correlation between organic matter content was observed. investigation showed that can be determined by studying physicochemical forms soil, vertical profiles ratios, composition well its oxidation regime.