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  • Title: [The quantitative parameters of the vertical migration of radionuclides in the soils in different types of meadows].
    Author: Sanzharova NI, Kotik VA, Arkhipov AN, Sokolik GA, Ivanov IuA, Fesenko SV, Levchuk SE.
    Journal: Radiats Biol Radioecol; 1996; 36(4):488-97. PubMed ID: 8925022.
    Abstract:
    The two-component convective-diffusional model was used for determination of vertical migration parameters of 90Sr [correction of 90Cs] and 137Cs in meadow ecosystems and dependence from meadow type and soil properties was shown. The migration coefficients decrease in the order: peat land, lowland meadows, flood-plain meadows, dry meadows. The ecological half-life in the root zone ranges from 55 to 143 y for dry meadows and from 15 to 21 y for peat lands. Analogous parameters for 90Sr was 30-96 and 13-18 y, respectively. Since 1987 to 1994 the ecological half-life of 137Cs increased by a factor of 1.7-6.0.
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