摘要
目的 测量分析北京春季室外空气中放射性核素210Pb水平.方法 采用便携式大流量空气采样器采集室外近地面空气气溶胶,利用高纯锗（HPGe）γ能谱仪测量气溶胶样品中210Pb活度浓度.结果 2015年春季北京室外空气中210Pb活度浓度范围值267.2 ～1 697.6μBq/m3,均值为（878.7 ± 386.7）μBq/m3,不同空气质量条件下空气中2100Pb活度浓度有差异.结论 北京春季室外空气中能够检出210Pb,其活度浓度情况变化较大,但仍处于正常范围。
Objective To measure and analyze the radioactivity level of 210Pb in outdoor air in Beijing in spring.Methods Portable high flow air samplers were used to collect outdoor air at the ground level to analyze the 210Pb radioactivity in the aerosol filter samples using a laboratory-based high purity germanium （HPGe） γ spectrometer.Results The activity concentration of 210Pb outdoors ranged from 267.2 to 1 697.6 μBq/m3,with an average of （878.7 ± 386.7） μBq/m3.Statistical analysis showed that the activity concentrations 210Pb of outdoors varied with variable air quality.Conclusions The activity concentrations of 210Pb outdoors are detectable in Beijing,varying considerably but within the normal range.
出处
《中华放射医学与防护杂志》
CAS
CSCD
北大核心
2017年第4期286-289,共4页
Chinese Journal of Radiological Medicine and Protection
关键词
Γ能谱仪
放射性核素
铅
空气
γ-ray spectrometer
Radionuclide
Lead
Air
