2009年上海市地铁车站放射性水平  

Radiation Levels in Shanghai Subway Stations,2009

作　　者：翟江龙[1] 朱国英[1] 张燕燕[1] 顾淑珠[1] 翁世芳[1] 胡和平[1] 俞云珍[1] 

机构地区：[1]复旦大学放射医学研究所,上海200032

出　　处：《环境与职业医学》2012年第7期407-410,419,共5页Journal of Environmental and Occupational Medicine

基　　金：上海市建设交通“十一五”重大科研项目--隧道安全防灾关键技术研究的资助,项目编号为重科2008-007.衷心感谢上海防灾救灾研究所翟永梅老师和罗奇峰老师的指导,衷心感谢上海申通轨道交通研究咨询有限公司的帮助.

摘　　要：[目的]了解上海市地铁车站空气氡浓度和环境γ辐射水平与变化趋势。[方法]于2009年8月至12月,在上海市已开通并在地下运行的地铁线路(1、2、4、6、8和9号线)共98个站点中随机抽取73个地铁站点,进行环境放射性水平(包括空气氡浓度和环境地表γ辐射剂量率)检测。瞬时氡浓度检测采用AB-4连续型氡测量仪,环境地表γ辐射剂量率检测采用FD-3013H智能化X/γ辐射仪。[结果]上海市6条地铁线路各站点空气氡浓度的均值为9.9Bq/m3,范围为1.2～28.4Bq/m3,明显低于国家标准规定限值。此外,各站点的环境地表γ辐射剂量率均值为(0.14±0.02)μSv/h,范围为0.07～0.24μSv/h,在天然本底辐射水平波动范围内。[结论]上海市投入运营的地铁线路各站点放射性水平属天然本底辐射水平,空气氡浓度明显低于国家标准规定限值。[ Objective ] To systematically assess radon concentrations and environmental terrestrial gamma-radiation doses in subway stations of Shanghai. [ Methods ] From August to December 2009, 73 stations were selected randomly from 98 stations of Shanghai subway lines, including Line 1, Line 2, Line 4, Line 6, Line 8 and Line 9, which involved underground sections. Instantaneous radon concentrations were measured with AB-4 radon gas monitor, and environmental terrestrial gammaradiation dose rates were obtained with FD-3013H intelligent X/7 radiometer. [ Results ] The radon concentrations were in the range of 1.2-28.4 Bq/m3, with the average of 9.9 Bq/m3, which were significantly lower than the national standard. The environmental terrestrial gamma-radiation dose rates were in the range of 0.07-0.24 μSv/h, and the average was （0.14 ± 0.02） μSv/h, within the fluctuations of natural background radiation. [ Conclusion ] The radiation level in Shanghai subway stations is within natural background levels, and the radon concentration is Obviously below admissible dosage.

关 键 词：地铁 上海市 放射性水平 氡 环境地表γ辐射剂量率 

分 类 号：X591[环境科学与工程—环境工程]