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STUDY OF DOSE FORMATION FOR THE POPULATION IN RADIOACTIVELY CONTAMINATED AREAS OF ZHYTOMYR REGION BASED ON COMPREHENSIVE RADIATION-HYGIENIC MONITORING.
Probl 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.
Optimization of pretreatment protocol for strontium-90 analysis in marine fish bone samples.
Radiat Prot Dosimetry
November 2024
Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki 036-8564 Aomori, Japan.
For systematic monitoring of radioactive nuclides in marine products, this study aimed at streamlining and simplifying the analysis method for the prominent radioisotope, strontium-90 (90Sr). The DGA chelate solid-phase extraction technique was employed for enhanced efficiency. The study focused on optimizing the necessary pretreatment procedures while minimizing the steps involving HNO3 leaching.
View Article and Find Full Text PDF[Assessment of the radiation risk to health caused by the intake of Cs-137 and Sr-90 radionuclides from food in the able-bodied population of the Samara region].
Vopr Pitan
October 2024
Samara State Medical University, Ministry of Health of the Russian Federation, 443099, Samara, Russian Federation.
Monitoring of the content of technogenic radionuclides (Cs-137 and Sr-90) in foods is one of the key areas in ensuring radiation safety of the population, taking into account the current radiation situation. The greatest risk to health is food produced or imported from the territories that have been subjected to man-made radiation accidents. of the research was to assess the radiation risk caused by oral intake of radionuclides based on the study of the actual nutrition of the adult population and contamination of food with Cs-137 and Sr-90 radionuclides.
View Article and Find Full Text PDFMigration mechanisms of Sr and Cs on terraces.
J Environ Radioact
May 2024
Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning, 530004, China. Electronic address:
In order to investigate the impact of environmental conditions on the distribution and migration of Sr in the Longji terrace environment, the activity concentrations of Sr and Cs were determined. The activity concentration ranges of Sr and Cs in surface soil were 0.15-1.
View Article and Find Full Text PDFPhosphination of amino-modified mesoporous silica for the selective separation of strontium.
J Hazard Mater
April 2024
School of Nuclear Science and Technology, University of South China, Hengyang 421001, PR China. Electronic address:
Radioactive strontium (Sr) is considered as one of the most dangerous radionuclides due to its high biochemical toxicity. For the efficient and selective separation of Sr from acidic environments, a novel functional adsorbent CEPA@SBA-15-APTES was prepared in this work through the phosphorylation of amino-modified mesoporous silica with organic content of approximately 20 wt%. CEPA@SBA-15-APTES was characterized by TEM, SEM, EDS, TG-DSC, BET, FTIR, and XPS techniques, revealing its characteristics of an ordered hexagonal lattice-like structure and rich functional groups.
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