摘要
目的调查武汉市地铁氡浓度水平和变化趋势,为确保公众辐射安全提供数据支撑。方法采用典型抽样法,抽取武汉市地铁2号线、3号线、7号线中共计18个站点对其空气中的氡进行测量和评价。借助RAD7电子测氡仪,用连续测氡法对地铁站内的站台、站厅的氡浓度进行测量调查。统计分析采用方差分析和t检验。结果武汉市地铁运行期间氡浓度范围为8.8~16.2 Bq/m^(3),均值为11.5 Bq/m^(3),远低于我国《公共地下建筑及地热水应用中氡的放射防护要求》WS/T 668—2019的限值要求,站台和站厅氡浓度差异无统计学意义(t=-0.081,P>0.05),各线路氡浓度差异无统计学意义(F=0.338,P>0.05);整体上氡浓度夏季低于冬季,不同月份的氡浓度差异无统计学意义(F=1.280,P>0.05)。结论结果显示武汉市内地铁氡浓度属于低剂量辐射范围,不存在较大的氡暴露健康风险。
Objective To investigate the levels and variations of radon concentration in Wuhan subway and to provide data support for ensuring public radiation safety.Methods The typical sampling method was used to select 18 stations from Wuhan Metro Line 2,Line 3,and Line 7 for the measurement and evaluation of radon in the air.Using RAD7 electron-ic radon detector and continuous radon measurement method,radon concentrations in station platforms and station halls were investigated.Analysis of variance and t test were used for statistical analysis.Results The concentration of radon in Wuhan subway ranged from 8.8 to 16.2 Bq/m^(3),with an average of 11.5 Bq/m^(3),which is far lower than the limit set by Re-quirements for Radiological Protection for Radon in Public Underground Structure and Using Geothermal Water(WS/T 668-2019).There was no significant difference in radon concentration between station platform and station hall(t=−0.081,P>0.05).There was no significant difference in radon concentration between different lines(F=0.338,P>0.05).On the whole,the radon concentration in summer was lower than that in winter,and there was no significant difference between months(F=1.280,P>0.05).Conclusion The radon concentrations in Wuhan subway result in low-dose radiation,and there is no significant health risk of radon exposure.
作者
石梦蝶
闵之藤
刘华牛
石斌
刘俊玲
SHI Mengdie;MIN Zhiteng;LIU Huaniu;SHI Bin;LIU Junling(Wuhan Centers for Disease Prevention and Control,Wuhan 430024 China;Wuhan Occupational Disease Prevention and Treatment hospital,Wuhan 430015 China)
出处
《中国辐射卫生》
2024年第5期505-509,共5页
Chinese Journal of Radiological Health
基金
湖北省卫生健康科研基金资助(WJ2019H407)
湖北省卫生健康科研基金资助—预科院专项(WJ2019H303)
武汉市卫生计生科研基金资助(WG18Y02)。
关键词
武汉市
地铁
运行期间
氡浓度
Wuhan
Metro
During operation
Radon concentration
作者简介
石梦蝶(1984-),女,湖北武汉人,副主任医师,从事放射卫生工作。E-mail:123815473@qq.com;通信作者:闵之藤,E-mail:375466275@qq.com。
