...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Radiation and Environmental Biophysics >Doses from external irradiation and ingestion of Cs-134, Cs-137 and Sr-90 of the population of Belarus accumulated over 35 years after the Chernobyl accident
【24h】

Doses from external irradiation and ingestion of Cs-134, Cs-137 and Sr-90 of the population of Belarus accumulated over 35 years after the Chernobyl accident

机译：Doses from external irradiation and ingestion of Cs-134, Cs-137 and Sr-90 of the population of Belarus accumulated over 35 years after the Chernobyl accident

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

This study considers the exposure of the population of the most contaminated Gomel and Mogilev Oblasts in Belarus to prolonged sources of irradiation resulting from the Chernobyl accident. Dose reconstruction methods were developed and applied in this study to estimate the red bone-marrow doses (RBMs) from (i) external irradiation from gamma-emitting radionuclides deposited on the ground and (ii) Cs-134, Cs-137 and Sr-90 ingestion with locally produced foodstuffs. The mean population-weighted RBM doses accumulated during 35 years after the Chernobyl accident were 12 and 5.7 mGy for adult residents in Gomel and Mogilev Oblasts, respectively, while doses for youngest age groups were 20-40 lower. The highest mean area-specific RBM doses for adults accumulated in 1986-2021 were 63, 56 and 46 mGy in Narovlya, Vetka and Korma raions in Gomel Oblast, respectively. For most areas, external irradiation was the predominant pathway of exposure (60-70 from the total dose), except for areas with an extremely high aggregated Cs-137 soil to cow's milk transfer coefficient (>= 5.0 Bq L-1 per kBq m(-2)), where the contribution of Cs-134 and Cs-137 ingestion to the total RBM dose was more than 70. The contribution of Sr-90 intake to the total RBM dose did not exceed 4 for adults and 10 for newborns in most raion in Gomel and Mogilev Oblasts. The validity of the doses estimated in this study was assessed by comparison with doses obtained from measurements by thermoluminescence dosimeters and whole-body counters done in 1987-2015. The methodology developed in this study can be used to calculate doses to target organs other than RBM such as thyroid and breast doses. The age-dependent and population-weighted doses estimated in this study are useful for ecological epidemiological studies, for projection of radiation risk, and for justification of analytical epidemiological studies in populations exposed to Chernobyl fallout.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号