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Seasonal variations within the long-term decline of Chernobyl-derived dissolved 137Cs in Kyiv dam reservoirстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 23 января 2026 г.
- Авторы: Konoplev A., Kanivets V., Wakiyama Y., Igarashi Y., Protsak V., Himchuk T., nanba K.
- Журнал: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
- Том: 14
- Год издания: 2026
- Первая страница: 120636
- Последняя страница: 10
- DOI: 10.1016/j.jece.2025.120636
- Аннотация: With the years passing after the Chernobyl accident, new insights become possible regarding mechanisms oflong-term and seasonal changes of radionuclide concentrations in aquatic ecosystems. The paper discusses resultsof many-years (1987–2023) monitoring of Chernobyl-derived 137Cs in the Dnieper River at Vyshgorod. Given thelong-term decline of dissolved 137Cs in the river, regular seasonal variations of its concentrations (increase insummer and decrease in winter) were observed similar to those previously reported for the cooling pond andlakes in Chernobyl. Two principal factors could possibly explain the seasonal variations of dissolved radiocesiumin water bodies: seasonal changes of water temperature and ammonium concentration. The available hydrochemicaldata for the cross-section Vyshgorod suggest that the dissolved 137Cs seasonality is primarily due tothe temperature dependence of 137Cs desorption from sediments. An empirical two-exponential model and asemi-empirical diffusional model accounting for the long-term dynamics of dissolved 137Cs in rivers are addedwith a term describing its seasonal fluctuations based on the modified Arrhenius equation. Both models weretested against the monitoring data for Kyiv reservoir, and the agreement between model results and experimentaldata is satisfactory.
- Добавил в систему: Коноплев Алексей Владимирович