Reconstruction of the Long-Term Dynamics of Particulate Concentrations and Solid–Liquid Distribution of Radiocesium in Three Severely Contaminated Water Bodies of the Chernobyl Exclusion Zone Based on Current Depth Distribution in Bottom Sediments
Given the importance of understanding long-term dynamics of radionuclides in the environment in general, and major gaps in the knowledge of <sup>137</sup>Cs particulate forms in Chernobyl exclusion zone water bodies, three heavily contaminated water bodies (Lakes Glubokoe, Azbuchin, and...
| 发表在: | Land |
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| Main Authors: | , , , , , , , , , |
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| 语言: | 英语 |
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MDPI AG
2021-12-01
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| 在线阅读: | https://www.mdpi.com/2073-445X/11/1/29 |
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| author | Alexei Konoplev Gennady Laptev Yasunori Igarashi Hrigoryi Derkach Valentin Protsak Hlib Lisovyi Kyrylo Korychenskyi Serhii Kirieiev Dmitry Samoilov Kenji Nanba |
| author_facet | Alexei Konoplev Gennady Laptev Yasunori Igarashi Hrigoryi Derkach Valentin Protsak Hlib Lisovyi Kyrylo Korychenskyi Serhii Kirieiev Dmitry Samoilov Kenji Nanba |
| author_sort | Alexei Konoplev |
| collection | DOAJ |
| container_title | Land |
| description | Given the importance of understanding long-term dynamics of radionuclides in the environment in general, and major gaps in the knowledge of <sup>137</sup>Cs particulate forms in Chernobyl exclusion zone water bodies, three heavily contaminated water bodies (Lakes Glubokoe, Azbuchin, and Chernobyl NPP Cooling Pond) were studied to reconstruct time changes in particulate concentrations of <sup>137</sup>Cs and its apparent distribution coefficient <i>K<sub>d</sub></i>, based on <sup>137</sup>Cs depth distributions in bottom sediments. Bottom sediment cores collected from deep-water sites of the above water bodies were sliced into 2 cm layers to obtain <sup>137</sup>Cs vertical profile. Assuming negligible sediment mixing and allowing for <sup>137</sup>Cs strong binding to sediment, each layer of the core was attributed to a specific year of profile formation. Using this method, temporal trends for particulate <sup>137</sup>Cs concentrations in the studied water bodies were derived for the first time and they were generally consistent with the semiempirical diffusional model. Based on the back-calculated particulate <sup>137</sup>Cs concentrations, and the available long-term monitoring data for dissolved <sup>137</sup>Cs, the dynamics of <sup>137</sup>Cs solid–liquid distribution were reconstructed. Importantly, just a single sediment core collected from a lake or pond many years after a nuclear accident seems to be sufficient to retrieve long-term dynamics of contamination. |
| format | Article |
| id | doaj-art-e4c2242beb4e42de92545dca9c9d2620 |
| institution | Directory of Open Access Journals |
| issn | 2073-445X |
| language | English |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| spelling | doaj-art-e4c2242beb4e42de92545dca9c9d26202025-08-19T23:16:20ZengMDPI AGLand2073-445X2021-12-011112910.3390/land11010029Reconstruction of the Long-Term Dynamics of Particulate Concentrations and Solid–Liquid Distribution of Radiocesium in Three Severely Contaminated Water Bodies of the Chernobyl Exclusion Zone Based on Current Depth Distribution in Bottom SedimentsAlexei Konoplev0Gennady Laptev1Yasunori Igarashi2Hrigoryi Derkach3Valentin Protsak4Hlib Lisovyi5Kyrylo Korychenskyi6Serhii Kirieiev7Dmitry Samoilov8Kenji Nanba9Institute of Environmental Radioactivity, Fukushima University, Kanayagawa 1, Fukushima 960-1296, JapanUkrainian Hydrometeorological Institute, Nauki Av., 37, 03028 Kyiv, UkraineInstitute of Environmental Radioactivity, Fukushima University, Kanayagawa 1, Fukushima 960-1296, JapanUkrainian Hydrometeorological Institute, Nauki Av., 37, 03028 Kyiv, UkraineUkrainian Hydrometeorological Institute, Nauki Av., 37, 03028 Kyiv, UkraineUkrainian Hydrometeorological Institute, Nauki Av., 37, 03028 Kyiv, UkraineUkrainian Hydrometeorological Institute, Nauki Av., 37, 03028 Kyiv, UkraineChernobyl Ecocentre, State Agency of Ukraine on Exclusion Zone Management, 07270 Chernobyl, UkraineChernobyl Ecocentre, State Agency of Ukraine on Exclusion Zone Management, 07270 Chernobyl, UkraineInstitute of Environmental Radioactivity, Fukushima University, Kanayagawa 1, Fukushima 960-1296, JapanGiven the importance of understanding long-term dynamics of radionuclides in the environment in general, and major gaps in the knowledge of <sup>137</sup>Cs particulate forms in Chernobyl exclusion zone water bodies, three heavily contaminated water bodies (Lakes Glubokoe, Azbuchin, and Chernobyl NPP Cooling Pond) were studied to reconstruct time changes in particulate concentrations of <sup>137</sup>Cs and its apparent distribution coefficient <i>K<sub>d</sub></i>, based on <sup>137</sup>Cs depth distributions in bottom sediments. Bottom sediment cores collected from deep-water sites of the above water bodies were sliced into 2 cm layers to obtain <sup>137</sup>Cs vertical profile. Assuming negligible sediment mixing and allowing for <sup>137</sup>Cs strong binding to sediment, each layer of the core was attributed to a specific year of profile formation. Using this method, temporal trends for particulate <sup>137</sup>Cs concentrations in the studied water bodies were derived for the first time and they were generally consistent with the semiempirical diffusional model. Based on the back-calculated particulate <sup>137</sup>Cs concentrations, and the available long-term monitoring data for dissolved <sup>137</sup>Cs, the dynamics of <sup>137</sup>Cs solid–liquid distribution were reconstructed. Importantly, just a single sediment core collected from a lake or pond many years after a nuclear accident seems to be sufficient to retrieve long-term dynamics of contamination.https://www.mdpi.com/2073-445X/11/1/29Chernobyl NPPradiocesiumdissolvedparticulatelakescooling pond |
| spellingShingle | Alexei Konoplev Gennady Laptev Yasunori Igarashi Hrigoryi Derkach Valentin Protsak Hlib Lisovyi Kyrylo Korychenskyi Serhii Kirieiev Dmitry Samoilov Kenji Nanba Reconstruction of the Long-Term Dynamics of Particulate Concentrations and Solid–Liquid Distribution of Radiocesium in Three Severely Contaminated Water Bodies of the Chernobyl Exclusion Zone Based on Current Depth Distribution in Bottom Sediments Chernobyl NPP radiocesium dissolved particulate lakes cooling pond |
| title | Reconstruction of the Long-Term Dynamics of Particulate Concentrations and Solid–Liquid Distribution of Radiocesium in Three Severely Contaminated Water Bodies of the Chernobyl Exclusion Zone Based on Current Depth Distribution in Bottom Sediments |
| title_full | Reconstruction of the Long-Term Dynamics of Particulate Concentrations and Solid–Liquid Distribution of Radiocesium in Three Severely Contaminated Water Bodies of the Chernobyl Exclusion Zone Based on Current Depth Distribution in Bottom Sediments |
| title_fullStr | Reconstruction of the Long-Term Dynamics of Particulate Concentrations and Solid–Liquid Distribution of Radiocesium in Three Severely Contaminated Water Bodies of the Chernobyl Exclusion Zone Based on Current Depth Distribution in Bottom Sediments |
| title_full_unstemmed | Reconstruction of the Long-Term Dynamics of Particulate Concentrations and Solid–Liquid Distribution of Radiocesium in Three Severely Contaminated Water Bodies of the Chernobyl Exclusion Zone Based on Current Depth Distribution in Bottom Sediments |
| title_short | Reconstruction of the Long-Term Dynamics of Particulate Concentrations and Solid–Liquid Distribution of Radiocesium in Three Severely Contaminated Water Bodies of the Chernobyl Exclusion Zone Based on Current Depth Distribution in Bottom Sediments |
| title_sort | reconstruction of the long term dynamics of particulate concentrations and solid liquid distribution of radiocesium in three severely contaminated water bodies of the chernobyl exclusion zone based on current depth distribution in bottom sediments |
| topic | Chernobyl NPP radiocesium dissolved particulate lakes cooling pond |
| url | https://www.mdpi.com/2073-445X/11/1/29 |
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