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      Indoor radon concentration and its changing trend in northeastern China

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          Abstract

          Objective To investigate the indoor radon concentration and its changing trend in northeastern China.

          Methods We measured indoor radon levels cumulatively for over three months by solid state nuclear track detection in a total of 261 houses in multi-story or high-rise buildings in Shenyang, Changchun, Harbin, Heihe, and Yichun in northeastern China. The measurement lasted one year in Changchun for seasonal changes.

          Results The average indoor radon concentration in the five cities was 88 Bq/m 3, ranging from 12 to 558 Bq/m 3. The indoor radon concentrations were ≤ 100 Bq/m 3 in 75.1% of the houses, and ≤ 300 Bq/m 3 in 97.7% of the houses. The indoor radon concentration increased with the age of buildings. The indoor radon concentration was highest in winter, and it was higher in summer than in autumn and spring.

          Conclusion The indoor radon concentration in northeastern China increased compared with the data of 1980s and 1990s. It is highest in the winter heating season, and higher in summer than in spring and autumn. Indoor radon exposure deserves attention.

          Abstract

          摘要: 目的 初步调查我国东北地区居室氡浓度水平和变化趋势。 方法 选择东北地区的沈阳、长春、哈尔滨、黑河 和伊春 5 个城市的多层和高层住宅共 261 户, 采用固体核径迹法累积测量室内氡浓度, 测量时间 3 个月以上。长春进 行了为期 1 年的测量, 分析季节变化。 结果 5 个城市室内氡浓度均值为 88 Bq/m 3, 范围为 12~558 Bq/m 3。室内氡浓 度 ≤ 100 Bq/m 3 的房屋占 75.1%, 室内氡浓度 ≤ 300 Bq/m 3 的房屋占 97.7%。室内氡浓度随建筑年代增加呈现增长趋 势。冬季室内氡浓度明显高于其他季节; 夏季氡浓度明显高于秋季和春季; 结论 我国东北室内氡浓度比上世纪八九 十年代的调查结果相比, 呈现明显升高趋势, 冬季取暖季节氡浓度明显偏高, 夏季氡浓度明显高于秋季和春季, 室内氡 污染值得关注。

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          Author and article information

          Journal
          CJRH
          Chinese Journal of Radiological Health
          Chinese Preventive Medical Association (Ji’an, China )
          1004-714X
          01 April 2023
          01 July 2023
          : 32
          : 2
          : 115-118
          Affiliations
          [1] 1Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088 China
          Author notes
          Corresponding author: HOU Changsong, E-mail: houchangsong@ 123456nirp.chinacdc.cn
          Article
          j.issn.1004-714X.2023.02.005
          10.13491/j.issn.1004-714X.2023.02.005
          88121706-a00a-463e-b3bf-4f04be53fb8f
          © 2023 Chinese Journal of Radiological Health

          This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 Unported License (CC BY-NC 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See https://creativecommons.org/licenses/by-nc/4.0/.

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          Categories
          Journal Article

          Medicine,Image processing,Radiology & Imaging,Bioinformatics & Computational biology,Health & Social care,Public health
          Northeastern China,Energy-efficient design,Residential building,Indoor radon concentration,Seasonal variation

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