摘要
采用Andersen采样器对兰州某居民小区夏季的大气微生物气溶胶浓度分布、粒径分布及日变化特征等进行观测。结果表明,居民区内大气微生物气溶胶浓度变化范围为528CFU/m^3~11553CFU/m^3,属清洁级。其粒径主要集中在2.1μm^4.7μm之间,易对人体支气管等造成影响。微生物气溶胶浓度的空间分布特征与小区垃圾房、垃圾桶位置及人的活动有关。其时间分布特征与日照强度有关,辐射强度最高的中午微生物气溶胶浓度最低。
In this study,the distribution of concentration and particle size,and the diurnal variation characteristics of atmospheric microbial aerosol in a residential area of Lanzhou were observed in summer by using Andersen sampler.The results showed that the concentration varied from 528 CFU/m^3 to 11 553 CFU/m^3,which was in clean grade.The particle size was mainly concentrated between 2.1μm and 4.7μm,which was easy to affect human bronchi.The spatial distribution characteristics of microbial aerosol concentration were related to the location of garbage room and garbage bin,and human activities.The temporal distribution characteristics were related to the sunlight intensity.The concentration was the lowest at noon when the radiation intensity was the highest.
作者
孙强
李杰
赵炜
边云峰
于晨晖
SUN Qiang;LI Jie;ZHAO Wei;BIAN Yun-feng;YU Chen-hui(College of Environment and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou,Gansu 730070,China)
出处
《环境监测管理与技术》
CSCD
2019年第4期13-17,共5页
The Administration and Technique of Environmental Monitoring
基金
兰州市科技局基金资助项目(2016-3-119)
关键词
微生物气溶胶
分布特征
居民区
兰州
Microbial aerosol
Distribution characteristics
Residential area
Lanzhou
