Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.1016/j.jenvrad.2021.106723

Ключевые слова: americium, cesium, submerged macrophyte, zoobenthos

Аннотация: MOX-fuel production and spent nuclear fuel reprocessing started recently at the Mining-and-Chemical Combine (MCC, Zheleznogorsk, Russia) have caused an increase in controlled releases of plutonium to the Yenisei River. In this study, we analyzed time-dependent trends of plutonium (239,240Pu and 238Pu) in biota and bottom sediments Показать полностьюof the Yenisei during 2008–2019, to estimate comparatively the potential of abundant representatives of biota as bio-monitors of contamination of the Yenisei by plutonium. Gamma-emitting radionuclides (40 K; 60Co; 137Cs; 152Eu; 241Am) were measured in environmental samples of the Yenisei as well. Samples of bottom sediments, water moss (Fontinalis antipyretica), shining pondweed (Potamogeton lucens), caddisfly larvae with casings (Apatania crymophila), and amphipods (Eulimnogammarus viridis and Palaseopsis cancelloides) were collected downstream and upstream of the radioactive discharge site. Environmental samples of the Yenisei collected downstream of the radioactive discharge site differed considerably in activity concentrations of plutonium but were similar in time-dependent trends of plutonium, reflecting the trends of annual discharges of plutonium. In 2018, the year of a sharp increase in controlled discharge of plutonium, the concentration of 239,240Pu in water moss (26 Bq kg−1 d.w.) was higher than in sediments (14 Bq kg−1 d.w.). In other years, the highest activity concentration of 2391,240Pu was observed in bottom sediments. In view of the higher magnitude of increase in plutonium concentration, water moss and shining pondweed can be considered as more sensitive indicators of increased fresh releases of plutonium than bottom sediments. Taking into account the food-related mechanism of plutonium uptake by amphipods, this representative of biota can be regarded as a sensitive monitor of bioavailable plutonium in the Yenisei. © 2021 Elsevier Ltd

Журнал: Journal of Environmental Radioactivity

Выпуск журнала: Vol. 237

Номера страниц: 106723

ISSN журнала: 0265931X

Издатель: Elsevier Ltd

• Zotina Tatiana A. (Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Inst Biophys,Fed Res Ctr, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, 79 Svobodny Av, Krasnoyarsk 660041, Russia)
• Melgunov Michail S. (Russian Acad Sci, Siberian Branch, Inst Geol & Mineral, 3 Academician Koptyug Av, Novosibirsk 630090, Russia)
• Dementyev V.V. (Institute of Biophysics, Federal Research Center “Krasnoyarsk Science Center” of the Siberian Branch of the Russian Academy of Sciences, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation)
• Miroshnichenko L.V. (Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, 3 Academician Koptyug av., Novosibirsk, 630090, Russian Federation)
• Alexandrova Y.V. (Institute of Biophysics, Federal Research Center “Krasnoyarsk Science Center” of the Siberian Branch of the Russian Academy of Sciences, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation)

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