| 董良,武云云,宋延超,等.宁夏城市和农村室内氡浓度初步调查[J].中华放射医学与防护杂志,2024,44(9):771-775.Dong Liang,Wu Yunyun,Song Yanchao,et al.Preliminary investigation on indoor radon concentrations in urban and rural areas of Ningxia[J].Chin J Radiol Med Prot,2024,44(9):771-775 |
| 宁夏城市和农村室内氡浓度初步调查 |
| Preliminary investigation on indoor radon concentrations in urban and rural areas of Ningxia |
| 投稿时间：2024-01-22 |
| DOI：10.3760/cma.j.cn112271-20240122-00027 |
| 中文关键词: 室内 氡浓度 固体核径迹探测器 城市 农村 |
| 英文关键词:Indoor Radon concentration Solid nuclear track detectors Urban Rural |
| 基金项目:宁夏自然科学基金(2021AAC03417);国家自然科学基金(12105274) |
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| 中文摘要: |
| 目的 初步调查宁夏城市和农村室内氡浓度水平及季节变化。方法 2022年3月—2023年3月,采用CR-39固体核迹径累积探测器,根据宁夏行政区域划分及人口分布情况,选择宁夏5个地级市22个县(区)的82户城市及61户农村典型住宅,共计143户,按照季节测量室内氡浓度,每期测量3个月,共4期,测量时间为1年。结果 宁夏室内年均氡浓度中位数为88 Bq/m3,范围为39~226 Bq/m3,室内平均氡浓度＜100 Bq/m3的测量点占全部调查点的69.9%,所有调查点室内年均氡浓度均＜300 Bq/m3。农村室内氡浓度均值明显高于城市(Z=5.85, P＜0.05)。宁夏总体、城市和农村室内氡浓度随季节变化明显且呈秋冬季高,春夏季低的特点(χ2=63.97、24.74、43.15, P＜0.05)。结论 本次宁夏调查点室内氡浓度年均值均小于我国《室内空气质量标准》(GB/T 18883-2022)建议的参考水平300 Bq/m3。 |
| 英文摘要: |
| Objective To investigate the indoor radon concentrations and to analyze their seasonal variations in urban and rural residential dwellings in Ningxia province. Methods From March 2022 to March 2023, based on the administrative region division and population distribution in Ningxia, a total of 143 typical residential dwellings, including 82 urban houses and 61 rural houses, were selected to measure indoor radon concentration by CR-39 solid nuclear track detectors for 1 year in Ningxia, with detectors changed every 3 months. Results The annual average indoor radon concentration in Ningxia was 88 Bq/m3, range 39-226 Bq/m3. The annual average indoor radon concentration was below 100 Bq/m3 for 69.9% of the measured dwellings, and below 300 Bq/m3 for all of surveyed dwellings. Indoor radon concentrations in rural areas were much higher than those in urban areas (Z=5.85, P＜0.05). Indoor radon concentration varied significantly with the seasons, higher in autumn and winter, but lower in spring and summer, in total (χ2=63.97, P=＜0.05), urban (χ2=24.74, P=＜0.05), and rural (χ2=43.15, P=＜0.05). Conclusion The annual average indoor radon concentrations in all the measured dwellings are below the reference level of 300 Bq/m3 recommended by Indoor Air Quality Standard (GB/T 18883-2022) in China. |
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