| 武云云,孙浩,刘丹,尚兵,崔宏星.深圳新建住宅室内氡水平及分布特征[J].中华放射医学与防护杂志,2016,36(7):513-516 |
| 深圳新建住宅室内氡水平及分布特征 |
| Levels and distribution of indoor radon concentrations in Shenzhen, China |
| 投稿时间：2016-02-17 |
| DOI：10.3760/cma.j.issn.0254-5098.2016.07.008 |
| 中文关键词: 深圳 室内空气 氡浓度 建筑材料 |
| 英文关键词:Shenzhen Indoor air Radon concentration Building material |
| 基金项目:国家自然科学基金（11375164） |
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| 摘要点击次数: 3211 |
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| 中文摘要: |
| 目的 初步调查深圳市新建住宅室内氡水平及分布特征。方法 选择深圳市低层、多层、中高层和高层结构住宅108户，采用固体径迹法累积测量室内氡浓度。结果 深圳市居室内氡浓度算数均值为64 Bq/m3，几何均值为58 Bq/m3，范围15~155 Bq/m3；宝安区室内氡浓度均值最低，为50 Bq/m3，坪山新区室内氡浓度均值最高，为87 Bq/m3。深圳室内氡浓度 > 100 Bq/m3的测量点有12个，占总数的11.1%。Shapiro-Wilk检验表明，深圳室内氡浓度频数分布呈对数正态分布（P > 0.05）。建筑年代为1990—2015年的房屋，室内氡浓度随建筑年代呈降低趋势。除10层及以上，室内氡浓度随楼层的升高呈降低趋势。结论 本次调查比以往调查深圳市室内氡浓度相比升高了35%。建议继续加强完善建材放射性标准，加强高层住宅的自然通风，降低室内氡的辐射危害。 |
| 英文摘要: |
| Objective To investigate the levels and distribution of radon in dwellings in Shenzhen cities of China. Methods A total of 108 low-, multi-, middle- and high-rise buildings were selected. Indoor radon concentrations were measured by using solid track detector. Results The arithmetic mean of indoor radon concentrations in Shenzhen was 64 Bq/m3, and geometric mean was 58 Bq/m3, in range of 15 to 155 Bq/m3. The average indoor radon concentration in Bao'an district was 50 Bq/m3 with the lowest value, and that in Pingshan new district was 87 Bq/m3 with the highest value. There were 12 measuring points where indoor radon concentrations were higher than 100 Bq/m3 in Shenzhen, accounting for 11.1% of the total number. Shapiro-Wilk test showed that the frequency distribution of indoor radon concentration in Shenzhen follows lognormal distribution (P > 0.05). The indoor radon concentrations showed a downward trend from 1990 to 2015. The indoor radon concentration decreases with the elevated floors except 10th and above floors. Conclusions The indoor radon concentrations in Shenzhen increased by 35%, compared to the previous investigations. It is recommended that efforts continue to improve radioactive materials standards about building material and to enhance the natural ventilation in high-rise buildings in order to lower the radiation hazards from radon. |
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