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Quantification of 222Rn/ 220Rn exhalation rates from soil samples of Champawat region in Kumaun Himalaya, India
Journal of Radioanalytical and Nuclear Chemistry ( IF 1.5 ) Pub Date : 2021-08-22 , DOI: 10.1007/s10967-021-07954-y
Taufiq Ahamad 1 , A. S. Rana 1 , Prakhar Singh 2 , O. P. Nautiyal 2 , Manish Joshi 3 , A. A. Bourai 4 , Kuldeep Singh 5
Affiliation  

The present study is carried out in selected locations of the Champawat district in the lesser Kumaun Himalayan belt of Uttarakhand, India. The Scintillation detector-based portable Smart RnDuo monitor was used to estimate exhalation rates of 222Rn and 220Rn. The levels of gamma dose rates were also measured using a portable radiation survey meter at each of the selected locations. The mass exhalation rate for 222Rn varies between 7.8 ± 0.1 and 107.3 ± 2.1 mBq kg−1 h−1 with an average of 38.9 ± 18.9 mBq kg−1 h−1. In contrast, the 220Rn surface exhalation rate ranges from 0.7 ± 0.5 to 14.3 ± 0.7 Bq m−2 s−1with an average 6.2 ± 3 Bq m−2 s−1 and emanation rate was found to range 88.4 and 1703.7 mBq kg−1 s−1 with an average 739 ± 356.7 mBq kg−1 s−1. The gamma dose rate was found to vary from 0.08 ± 0.01 to 0.30 ± 0.03 µSv h−1 with an average of 0.18 ± 0.06 µSv h−1 in the region.



中文翻译:

印度 Kumaun Himalaya Champawat 地区土壤样品中 222Rn/220Rn 呼气速率的定量

本研究是在印度北阿坎德邦小库曼喜马拉雅带的 Champawat 地区的选定地点进行的。基于闪烁探测器的便携式 Smart RnDuo 监测器用于估计222 Rn 和220 Rn 的呼气速率。还使用便携式辐射测量仪在每个选定地点测量伽马剂量率水平。222 Rn的质量呼出速率在 7.8 ± 0.1 和 107.3 ± 2.1 mBq kg -1  h -1 之间变化,平均为 38.9 ± 18.9 mBq kg -1  h -1。相比之下,220 Rn 表面呼气速率范围从 0.7 ± 0.5 到 14.3 ± 0.7 Bq m -2  s-1平均为 6.2 ± 3 Bq m -2  s -1,散发率范围为 88.4 和 1703.7 mBq kg -1  s -1,平均为 739 ± 356.7 mBq kg -1  s -1。发现伽马剂量率从 0.08 ± 0.01 到 0.30 ± 0.03 µSv h -1 变化,该区域的平均值为 0.18 ± 0.06 µSv h -1

更新日期:2021-08-23
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