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Sci Total Environ
February 2025
Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway.
The presence of the long-lived radionuclides Cs and Sr in ecosystems is a major environmental concern because bioavailable forms of the radionuclides are readily transferred to living organisms. The present study investigated how holometabolous insect development influences the fate of radiocaesium and radiostrontium by examining the behaviour of tracers (Cs and Sr) and stable elements during the larval feeding stage (21-23 days old), the pupal stage, and the adult stage. We aimed to evaluate the degree to which an herbivore or a detritivore food chain could serve as transfer pathways to higher trophic levels in terms of accumulation potential, and during which stage of development the accumulation potential is highest.
View Article and Find Full Text PDFJ Environ Radioact
January 2025
Savannah River Ecology Laboratory, Warnell School of Forestry and Natural Resources, University of Georgia, Aiken, SC, USA.
The primary aim of this study was to quantify patterns in the distribution of Sr and Cs activity in pine (Pinus sylvestris L.: 18 sites) and birch (Betula pendula Roth.: 2 sites) forests within the Chornobyl exclusion zone, 30 years after the Chornobyl nuclear power plant (NPP) accident (1986).
View Article and Find Full Text PDFProbl Radiac Med Radiobiol
December 2024
WHO Country Office in Ukraine, 9B Mykhaila Hrushevskoho Str., Kyiv, 01021, Ukraine.
Objective: the research is to determine the main radiation-hygienic factors influencing the formation of radiation doses among the population of radioactively contaminated territories (RCT) in Zhytomyr region in 2024 and to analyze the dynamics of internal radiation doses based on original experimental studies conducted in reference settlements from 2012 to 2024.
Materials And Methods: In 2024, a comprehensive radiation-hygienic monitoring program was conducted in 11 settlements of Narodychi Territorial Community (TC): the Narodychi and the villages of Selets, Bazar, Rudnya Bazarska, Khrystynivka (Zone 2), Motiyki, Zalissya, Davydky, Radcha, Nova Radcha, and Grezlya (Zone 3). The comprehensive radiation-hygienic monitoring included the following activities: mobile WBC monitoring: 817 measurements (562 adults and 255 children); collection and analysis of food samples: 39 milk samples, 61 potato samples, and 57 samples of wild foods, analyzed for radionuclide content, including 137Cs and 90Sr; assessment of external radiation exposure in these settlements; surveys: 194 individuals were surveyed regarding the consumption volumes of locally produced foods from their own households and purchased foods from commercial networks.
J Environ Radioact
December 2024
School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China. Electronic address:
The presence of fractures in the surrounding rocks of a radioactive waste disposal repository is recognized as a potential pathway for radionuclides to enter the public domain. As is well known, radionuclides transported by groundwater exhibit increased mobility in fractures, with flow velocities significantly faster than those in the pore spaces of the surrounding rock matrix. The principal objective of this study is to investigate the mobility of Sr, Cs, U, and Pu in fractures and their fate in the groundwater environment.
View Article and Find Full Text PDFEnviron Sci Technol
November 2024
Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima, Fukushima 960-1296, Japan.
Wildfires in radiologically contaminated areas raise significant concerns due to potential radionuclides redistribution and increased public radiation exposure. This study examined the impact of the 2020 Chornobyl wildfire on the redistribution of radionuclides, specifically Cs and Sr, in the Chornobyl River system. We determined the quantities and speciation of Cs and Sr in charred residues and soil after wildfires and analyzed the riverine concentrations of these radionuclides based on long-term monitoring data.
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