Characteristics of Indoor and Soil Gas Radon, and Discussion on High Radon Potential in Urumqi, Xinjiang, NW China
Characteristics of Indoor and Soil Gas Radon, and Discussion on High Radon Potential in Urumqi, Xinjiang, NW China
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DOI：
10.3390/atmos14101548
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发表时间：
2023-10
期刊：
影响因子：
2.9
通讯作者：
Nanping Wang;Jingming Yang;Haochen Wang;Binlin Jia;Aimin Peng
中科院分区：
文献类型：
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作者：
Nanping Wang;Jingming Yang;Haochen Wang;Binlin Jia;Aimin Peng
乌鲁木齐市位于我国西北部，在全国范围内的室内氡调查中，是室内氡浓度较高的城市。本研究主要对北京市室内氡水平及其分布进行评价。2021 - 2023年，采用RAD 7和固体核径迹探测器（SSNTD）进行室内氡测量，采用RAD 7进行土壤气氡测量，采用高纯锗谱仪测定土壤样品中铀和镭的比活度。结果显示，乌鲁木齐市室内氡浓度范围很广，部分住宅的氡浓度异常值超过400 Bq/m3。室内氡浓度算术平均值为80 ± 77 Bq/m3，几何平均值为58 Bq/m3。SSNTD测得的氡的几何平均值为101 Bq/m3。室内氡浓度高值区的分布在空间上与深大活动断裂或多组断裂的叠交带相一致。建议对与建筑材料有关的高氡潜势和放射性进行更全面的调查和研究。
Urumqi City, located in the northwest of China, is a city with a high indoor radon concentration in a nationwide indoor radon survey in China. This study focuses on the assessment of the indoor radon level and its distribution in this city. Indoor radon measurement using RAD7 and solid nuclear track detector (SSNTD), soil gas radon measured by RAD7, and the determination of the specific activity of uranium and radium in soil samples by a high pure germanium spectrometer were performed from 2021 to 2023. The results reveal a wide range of indoor radon concentrations in Urumqi, with anomalies above 400 Bq/m3 in some dwellings. The arithmetical and geometric mean values of indoor radon concentration are 80 ± 77 Bq/m3 and 58 Bq/m3, respectively. The geometric mean value of radon measured by SSNTD is 101 Bq/m3. The distribution of areas with a high indoor radon concentration is spatially consistent with deep and large active faults or overlapping and intersection zones of multiple groups of faults. It is recommended to conduct a more comprehensive investigation and research into the elevated radon potential and radioactivity associated with building materials.