Department of Physics, HNB Garhwal University, Badshahi Thaul Campus, Tehri Garhwal 249199, India.
Uttarakhand Science Education and Research Centre, Dehradun 248001, India.
Radiat Prot Dosimetry. 2024 Jul 17;200(11-12):1011-1017. doi: 10.1093/rpd/ncad321.
Alpha flux radiated from 222Rn, 220Rn and progeny is the primary contributor of natural radioactivity to the inhabitants in the ambient atmosphere. The annual indoor 222Rn and 220Rn concentrations were found to be 85 ± 43 and 84 ± 36 Bq m-3, respectively. The estimated annual indoor 222Rn and 220Rn concentration is below to reference value of 100 Bq m-3 suggested by WHO. The calculated annual inhalation dose due to exposure to the alpha flux of 222Rn, 220Rn and their progeny is well below the recommended reference level given by UNSCEAR and ICRP. The data were further checked for normalisation and found that 222Rn and Effective Equilibrium Radon Concentration (EERC) data are not normally distributed.
α 通量辐射自 222Rn、220Rn 和其衍生产物，是环境大气中天然放射性对居民的主要贡献者。室内 222Rn 和 220Rn 的年浓度分别被发现为 85 ± 43 和 84 ± 36 Bq m-3。估算的室内 222Rn 和 220Rn 的年浓度低于世界卫生组织建议的 100 Bq m-3 的参考值。由于暴露于 222Rn、220Rn 和其衍生产物的 α 通量而导致的年吸入剂量，经计算远低于联合国原子辐射影响科学委员会和国际辐射防护委员会所给出的推荐参考水平。进一步对数据进行正态化检查，发现 222Rn 和有效平衡氡浓度（EERC）数据呈非正态分布。
