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Information × Registration Number 0225U001906, (0122U001298) , R & D reports Title Explore the dynamics of the main factors in the formation of radiation doses for the population of radioactively contaminated territories of Ukraine on the basis of comprehensive radiation and hygienic monitoring in the reference settlements in 2010-2024. popup.stage_title Дослідження чинників формування доз опромінення мешканців радіоактивно забруднених територій Житомирської області та їх динаміки Head Vasylenko Valentyna V., Кандидат технічних наук Registration Date 11-02-2025 Organization State Institution "National Research Center for Radiation Medicine, Hematology and Onkology of the National Academy of Medical Sciences of Ukraine" popup.description1 Determining the main radiation and hygienic factors in the formation of radiation doses for the population of radioactively contaminated territories (RCT) of Ukraine in 2022-2024 and study of their dynamics based on their own experimental studies in reference settlements in 2010-2024. popup.description2 The comprehensive radiation-hygienic monitoring conducted in 2022–2024 across 23 settlements in the RCT of Kyiv, Rivne, and Zhytomyr regions revealed that at the current stage of the accident, annual effective radiation doses to the population are primarily formed due to internal exposure. These doses do not exceed 0.50 mSv·year⁻¹ in Kyiv region, 0.67 mSv·year⁻¹ in Rivne region, and 1.04 mSv·year⁻¹ in Zhytomyr region, compared to the RCT criterion of 1 mSv·year⁻¹. A further decline in average annual internal exposure doses was recorded in the settlements: a 1.7-fold decrease in Polissia TC (from 0.030 mSv·year⁻¹ in 2019 to 0.018 mSv·year⁻¹ in 2022); a 1.1-fold decrease in Ivankiv TC (from 0.018 mSv·year⁻¹ in 2019 to 0.016 mSv·year⁻¹ in 2022); a 1.5-fold decrease in the settlements of Rivne region (from 0.156 mSv·year⁻¹ in 2020 to 0.104 mSv·year⁻¹ in 2023); and a 1.8-fold decrease in the settlements of Zhytomyr region (from 0.084 mSv·year⁻¹ in 2021 to 0.047 mSv·year⁻¹ in 2024). It is worth noting that the current stage of research shows a more rapid decline in radiation exposure levels across all regions compared to the previous period (2018–2021), during which the decrease ranged from 1.03 to 1.4 times. The primary factor contributing to internal exposure doses remains the intake of ¹³⁷Cs through wild food products, particularly forest mushrooms, in all settlements. In the Rivne region, a second major contributing factor is the intake of ¹³⁷Cs through milk from domestic or local farms. In the majority of milk samples collected from residents of the settlements in Rivne region (75%), the ¹³⁷Cs content exceeded the permissible level of 100 Bq·L⁻¹, with a maximum recorded value of 387 Bq·L⁻¹. The maximum registered ¹³⁷Cs content in dried mushroom samples collected in Kyiv region was 209 kBq·kg⁻¹, in Rivne region—24 kBq·kg⁻¹, and in Zhytomyr region—572 kBq·kg⁻¹. These values exceed the permissible level of 2.5 kBq·kg⁻¹ by tens, and in some cases, hundreds of times. Product Description popup.authors Bilonyk Andrii B Bessmertna Olena I Borovkov Serhii I. Vasylenko Valentyna V. Kramarenko Mariia S. Kuriata Mykola S. Lytvynets Leonid O. Mishchenko Lina P. Malchevskyi V'iacheslav I. Manh Zinaida S. Morozov Viktor V. Piven Nataliia V. Sevruk Olha V. popup.nrat_date 2025-02-11 Close