Research highlights migration of radionuclides in soil profiles, indicating depth variations in contamination.
The research of migration of Chornobyl origin radionuclides was carried out in vertical soil profiles of the "Ryzhyj les" waste disposal area within 5 km ChNPP zone. The 1122-soil samples were selected during 2000 - 2001 years. The γ-, β- and X-emanation of these samples were studied after corresponding preparation. The 134,137Cs, 154,155Eu, 241Am and 238+239+240Pu isotopes were identified. The (90Sr + 90Y) isotopes were identified in equilibrium as a result of the research of the "non thin" layers samples β-spectra. The 238+239+240Pu isotopes were determined by Lx-emanation spectroscopy of U and Np. The migration of 134,137Cs, 154,155Eu, 90Sr, 241Am isotopes was observed to the depth of up to 30 cm, and the 238+239+240Pu migration was observed to the depth of 10 ÷ 15 cm. The obtained data is discussed.
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Bondarkov et al. (2003) studied this question.
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