黄石市大气颗粒物粒径分布与质量浓度特征  

Mass Concentration and Size Distribution of Atmospheric Particles in Huangshi City

作　　者：李慧蓉[1,2] 钟萍[1,2] 袁攀[1,2] 王浩泉 阮景军[1,2] 李小刚[1,2] 王晨[1,2] 刘红霞[1,2] 

机构地区：[1]湖北理工学院环境科学与工程学院，湖北黄石435003 [2]湖北理工学院矿区环境污染控制与修复湖北省重点实验室,湖北黄石435003

出　　处：《湖北理工学院学报》2016年第2期13-18,共6页Journal of Hubei Polytechnic University

基　　金：湖北理工学院大学生科技创新项目(项目编号:14cx01);国家级大学生创新创业训练计划项目(项目编号:201510920010);矿区环境污染控制与修复湖北省重点实验室开放课题项目(项目编号:2014105)

摘　　要：于2015年9月8日至同年月29日采用安德森分级撞击式采样器在湖北理工学院环境科学与工程学院楼顶采样,分析不同粒径样品中颗粒物质量浓度,探讨黄石大气颗粒物粒径分布与质量浓度特征。结果表明：质量浓度相对较大的粒径依次为0~0.4μm、0.4~0.7μm、4.7~5.8μm,质量浓度分别为15.96μg/m3、14.26μg/m3、9.45μg/m3,其余粒径质量浓度相差不大;小于0.7μm的颗粒物粒径越细质量浓度越高;0.7~10μm粒径范围颗粒物质量浓度相对较低。各粒径范围颗粒物质量浓度变化为：第3周〉第2周〉第1周,推断降雨可降低空气中颗粒物质量浓度。相关性分析表明,黄石市大气颗粒物特点随其粒径不同而显著不同,可能是因各粒径范围颗粒物理化成分不同而导致。To analyze size distribution and mass concentration of atmospheric particles in Huangshi urban area, samples were collected from September 8 to 29 in 2015 using an Anderson classification impingement sampler on the roof of School of Environmental Science and Engineering, Hubei Polytechnic University. The results showed that the higher mass concentrations presented in the following size distribution：0~0.4μm、0.4~0.7μm、4.7~5.8μm,with the concentration of 15.96μg/m3、14.26μg/m3、9.45μg/m3, respectively. Fine particles less than 0.7μm had higher mass concentrations than coarse particles between 0.7μm and 10μm. The change of size particles showed as the following sequence ：the third week 〉 the second week 〉 the first week ,which may be caused by rainfall that reduced particulate mass concentration in the air. According to the correlation analysis, particle characteristics significantly depended on particle size, suggested that different sources in various sizes particles were owed to different physical and chemical composition of the particles.

关 键 词：大气颗粒物 质量浓度 粒径分布 黄石市 

分 类 号：X513[环境科学与工程—环境工程]