北京地区大气中放射性惰性气体氙的监测与分析  

Monitoring and analysis on radioactive noble gas xenon in atmosphere of Beijing region

作　　者：孟庆华[1] 武大鹏[1] 李慧娟[1] 马永忠[1] 娄云[1] 万玲[1] 张泓[1] 翟曙光[1] 俞君[1] 朱维杰[1] 冯泽臣[1] 王宏芳[1] 

机构地区：[1]北京市疾病预防控制中心,100013

出　　处：《职业与健康》2015年第10期1368-1371,共4页Occupation and Health

摘　　要：目的了解北京地区大气中放射性惰性气体氙（131Xem、133Xe、133Xem和135Xe）的活度浓度,加强该地区放射性污染监测。方法采集2013年1月1日—8月16日期间北京地区大气中的176个惰性气体氙样品,使用高纯锗γ谱仪测量样品中131Xem、133Xe、133Xem和135Xe的活度浓度。结果在所检气体样品中,1个样品检测出131Xem的活度浓度为8.82 m Bq/m3,6个样品检测出133Xe的活度浓度为0.27~0.36 m Bq/m3,其余样品中均未检出131Xem、133Xe、133Xem和135Xe。结论监测期间,该地区大气中未发现存在明显的放射性污染,但131Xem和133Xe作为反映大气放射性污染状况的关键核素,应对其进行持续监测。[ Objective ] To study the activity concentrations of the radioactive xenon isotope （131Xem, 133Xe, 133Xem AND 13SXe） in the atmosphere of Beijing region, strengthen the radioactive contamination monitoring in Beijing. [Methods ]A total of 176 noble gas xenon samples were collected during the period from 1st January to 16th August 2013 in Beijing region. The activity concentrations of 131Xem, 133Xe, 133Xem and 135Xe were measured with the HPGe γ spectrometer system. [Results]The activity concentrations of 131Xem was 8.82 mBq/m3 in one sample, and the activity concentrations of 133Xe was detected in six samples with the range of 0.27-0.36 mBq/m3, while no radioactive xenon was detectable in the other samples.[ Conclusion ] There is no obvious radioactive contamination in the atmosphere in Beijing during the period. Meanwhile, 131Xem and 133Xe are the key nuclides reflecting the status of radioactive contamination in atmosphere, which should be monitored constantly.

关 键 词：放射性惰性气体 氙 放射性污染 活度浓度 北京地区 

分 类 号：R144[医药卫生—公共卫生与预防医学]