西藏居室内氡浓度调查及所致居民剂量估算  

Investigation on indoor radon concentrations in Tibet and dose assessment to residents

作　　者：王春红[1] 刘森林[1] 王晓峰[2,3] 王薇 邢雨[1] 杨明理[4] 韩春彩[1] 多吉[3] 姜子英 李静晶[1] 刘伟富[1] 温宝印[1] 顾建刚 郭庐阵 杨涛[3] WANG Chunhong;LIU Senlin;WANG Xiaofeng;WANG Wei;XING Yu;YANG Mingli;HAN Chuncai;DUO Ji;JIANG Ziying;LI Jingjing;LIU Weifii;WEN Baoyin;GU Jiangang;GUO Luzhen;YANG Tao(China Institute of Atomic Energy,Beijing 102413 China;Nuclear and Radiation Safety Centre,Ministry of Environmental Protection;Tibet Radiation Monitoring Station;Beijing Research Institute of Chemical Engineering and Metallurgy)

机构地区：[1]中国原子能科学研究院,北京102413 [2]环境保护部核与辐射安全中心 [3]西藏自治区辐射环境监督站 [4]核工业北京化工冶金研究院

出　　处：《中国辐射卫生》2020年第4期366-369,共4页Chinese Journal of Radiological Health

摘　　要：目的在国内城市室内氡呈上升趋势的背景下,为了获取现阶段西藏地区室内氡浓度水平,开展本次西藏地区室内氡浓度调查工作。方法采用KF606B型固体核径迹氡累积探测器,对西藏自治区居室氡浓度进行测量,测量周期6~12个月。结果西藏地区138间居室内氡浓度范围为14~119 Bq·m^-3,均值为(47.8±23.0)Bq·m^-3。氡浓度大于100 Bq·m^-3房间有5个,占总调查房间数的4%。居室内氡所致西藏地区居民有效剂量范围为0.46~3.89 mSv·a^-1,均值为1.56 mSv·a^-1。文章还对不同调查地区、城镇/农村、不同建筑类型和不同建筑年代居室内氡浓度进行了比较分析。结论本次居室内氡浓度调查结果比上世纪八九十年代西藏地区测量结果有显著增高。Objective In order to obtain the present indoor radon levels in Tibet,the survey of the indoor radon concentration in Tibet was carried out at the background of the increasing trend of indoor radon in domestic cities.Methods The measurement was performed using KF606 B solid state nuclear track detectors,and the period was 6~12 months.Results The survey result involves 138 dwellings in total,the range of indoor radon concentrations is 14~119 Bqm^-3,and the average is47.8±23.0 Bqm^-3.There are 5 dwellings with radon concentration higher than 100 Bqm^-3,accounting for 4%of the total dwellings investigated.The range of the effective dose to residents arising from radon and its progenies is 0.46~3.89 mSva^-1,with an average of 1.56 mSva^-1.Radon concentrations in dwellings in different regions,and in different building types and ages are compared in this paper.Conclusion The results of the indoor radon concentration measured in this investigation are significantly higher than those performed during the 1980 s and 1990 s in Tibet.

关 键 词：室内 氡 有效剂量 气压 刻度系数 

分 类 号：X591[环境科学与工程—环境工程]