摘要
目的通过对石家庄市不同地区、不同建筑材料、不同建筑年代、不同装修材料等居室内γ辐射和氡浓度水平及其影响因素的调查分析,估算所致居民受照剂量。方法居室内γ辐射水平采用FD-3013B型智能化γ辐射仪,氡浓度采用固体核径迹法测量累积剂量。结果石家庄市居室内γ辐射水平均值为[0.155±0.023(0.107～0.20)]μSv/h,氡浓度平均值为[31.8±16.5(9.3～111.0)]Bq/m3,最高值均为市区、高层、瓷砖装修居室。二者所致居民剂量为1.60 mSv/a。结论石家庄市居室内γ辐射及氡所致居民受照剂量属正常天然本底辐射水平;建筑材料是影响居室内γ辐射水平及氡浓度的主要因素,选择恰当的材料进行建筑、装修可以降低居民受照剂量,减低其对人类健康的影响。
[ Objective ] To test the level of indoorγradiation and radon concentration of residential areas in Shijiazhuang City through comparisons with location, building materials, construction age, decoration materials, and to estimates the exposure doses received by the residents. [ Methods] FD-3013 B intelligent γ radiometer was used to detect indoor γ radiation level and solid state nuclear track method to was used to measure the cumulative dose of radon concentration. [ Results ] The mean concentration of indoor/radiation was 0. 155 ±0.023 （ 0. 107-0.201 μSv/h and the mean value of radon concentration was [31.8 ±16.5 （9.3-111.0） ] Bq/m3 in Shijiazhuang City. The highest values were involved in urban areas, high buildings, and rooms decorated by ceramic tiles. The total dose caused by the two radiation sources was 1.60 mSv/a. [ Conclusion] The level of indoorγradiation and radon concentration of residential areas in Shijiazhuang City is a normal natural background level. Building materials are the major factors that affect indoor γradiation levels and radon concentration. Selection of appropriate materials for construction and decoration can reduce radiation doses received by residents, thus reducing its negative impacts on human health.
出处
《职业与健康》
CAS
2013年第18期2399-2400,共2页
Occupation and Health
基金
河北省科技厅科学技术研究与发展计划项目(项目编号:08276101D-96)
关键词
居室内
Γ辐射水平
氡浓度
建筑材料
年均有效剂量当量
lndoor
γ radiation level
Radon concentration
bBuilding material,
Annual average effective dose equivalent
