Dose-dependent effects of isotopic exchange of tritium in the process of willow vegetation
The paper is devoted to the study of the kinetics of tritium redistribution between living and inanimate matter of white willow in the “greenhouse” experiments. It was shown that the concentration of tritium in the aquatic environment significantly affects the kinetic parameters of its assimilation...
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Institute for Nuclear Research, National Academy of Sciences of Ukraine
2020-12-01
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| Series: | Ядерна фізика та енергетика |
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| Online Access: | http://jnpae.kinr.kiev.ua/21.4/Articles_PDF/jnpae-2020-21-0354-Dolin.pdf |
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| author | V. V. Dolin V. M. Bobkov |
| author_facet | V. V. Dolin V. M. Bobkov |
| author_sort | V. V. Dolin |
| collection | DOAJ |
| description | The paper is devoted to the study of the kinetics of tritium redistribution between living and inanimate matter of white willow in the “greenhouse” experiments. It was shown that the concentration of tritium in the aquatic environment significantly affects the kinetic parameters of its assimilation in the organic and inorganic matter of the organism of the white willow (Salix alba L.). The kinetics of the influx of tritium from the aqueous nutrient into the intracellular juice, the organic phase of plants, and transpiration fumes, depending on the concentration of the superheavy hydrogen isotope, are described. Dose-dependent effects were identified, accompanied by fractionation of hydrogen isotopes in all components of the biosystem - the aquatic food environment, intracellular juice, transpiration fumes, and in the organic phase. It was found that with an increase of the initial specific activity of aqueous feeding solution (by 8.6 times): the rate of tritium removal from it and from intracellular juice increases (by 14.8 and 15.6 times, respectively), the degree of assimilation of this isotope into intracellular juice decreases (by 41.3 times), and its the part that enters the organic phase of wood (1.3 times) decreases the relative proportion of tritium in transpiration water (5.7 times). The existence of physiological barriers that sharply and significantly limit the assimilation of tritium into the components of the willow has been proved. Thus, the value of the barrier during the migration of this isotope of hydrogen into the intracellular juice reaches 15 % and only 18 - 25 % of tritium gets from the external water into the organic phase. |
| format | Article |
| id | doaj-art-7564e989b37d4309a45fc046794fbdf3 |
| institution | OA Journals |
| issn | 1818-331X 2074-0565 |
| language | English |
| publishDate | 2020-12-01 |
| publisher | Institute for Nuclear Research, National Academy of Sciences of Ukraine |
| record_format | Article |
| series | Ядерна фізика та енергетика |
| spelling | doaj-art-7564e989b37d4309a45fc046794fbdf32025-08-20T01:58:08ZengInstitute for Nuclear Research, National Academy of Sciences of UkraineЯдерна фізика та енергетика1818-331X2074-05652020-12-01214354360https://doi.org/10.15407/jnpae2020.04.354Dose-dependent effects of isotopic exchange of tritium in the process of willow vegetationV. V. Dolin0V. M. Bobkov1State Institution “The Institute of Environmental Geochemistry, National Academy of Sciences of Ukraine”, Kyiv, UkraineState Institution “The Institute of Environmental Geochemistry, National Academy of Sciences of Ukraine”, Kyiv, UkraineThe paper is devoted to the study of the kinetics of tritium redistribution between living and inanimate matter of white willow in the “greenhouse” experiments. It was shown that the concentration of tritium in the aquatic environment significantly affects the kinetic parameters of its assimilation in the organic and inorganic matter of the organism of the white willow (Salix alba L.). The kinetics of the influx of tritium from the aqueous nutrient into the intracellular juice, the organic phase of plants, and transpiration fumes, depending on the concentration of the superheavy hydrogen isotope, are described. Dose-dependent effects were identified, accompanied by fractionation of hydrogen isotopes in all components of the biosystem - the aquatic food environment, intracellular juice, transpiration fumes, and in the organic phase. It was found that with an increase of the initial specific activity of aqueous feeding solution (by 8.6 times): the rate of tritium removal from it and from intracellular juice increases (by 14.8 and 15.6 times, respectively), the degree of assimilation of this isotope into intracellular juice decreases (by 41.3 times), and its the part that enters the organic phase of wood (1.3 times) decreases the relative proportion of tritium in transpiration water (5.7 times). The existence of physiological barriers that sharply and significantly limit the assimilation of tritium into the components of the willow has been proved. Thus, the value of the barrier during the migration of this isotope of hydrogen into the intracellular juice reaches 15 % and only 18 - 25 % of tritium gets from the external water into the organic phase.http://jnpae.kinr.kiev.ua/21.4/Articles_PDF/jnpae-2020-21-0354-Dolin.pdftritiumwhite willowintracellular juiceorganically bound tritiumtranspirationkineticsdose-dependent effect. |
| spellingShingle | V. V. Dolin V. M. Bobkov Dose-dependent effects of isotopic exchange of tritium in the process of willow vegetation Ядерна фізика та енергетика tritium white willow intracellular juice organically bound tritium transpiration kinetics dose-dependent effect. |
| title | Dose-dependent effects of isotopic exchange of tritium in the process of willow vegetation |
| title_full | Dose-dependent effects of isotopic exchange of tritium in the process of willow vegetation |
| title_fullStr | Dose-dependent effects of isotopic exchange of tritium in the process of willow vegetation |
| title_full_unstemmed | Dose-dependent effects of isotopic exchange of tritium in the process of willow vegetation |
| title_short | Dose-dependent effects of isotopic exchange of tritium in the process of willow vegetation |
| title_sort | dose dependent effects of isotopic exchange of tritium in the process of willow vegetation |
| topic | tritium white willow intracellular juice organically bound tritium transpiration kinetics dose-dependent effect. |
| url | http://jnpae.kinr.kiev.ua/21.4/Articles_PDF/jnpae-2020-21-0354-Dolin.pdf |
| work_keys_str_mv | AT vvdolin dosedependenteffectsofisotopicexchangeoftritiumintheprocessofwillowvegetation AT vmbobkov dosedependenteffectsofisotopicexchangeoftritiumintheprocessofwillowvegetation |