典型文献
Fine particulate matter(PM2.5/PM1.0)in Beijing,China:Variations and chemical compositions as well as sources
文献摘要：
Particulate matter(i.e.,PM1.0 and PM2.5),considered as the key atmospheric pollutants,ex-erts negative effects on visibility,global climate,and human health by associated chemical compositions.However,our understanding of PM and its chemical compositions in Beijing under the current atmospheric environment is still not complete after witnessing marked alleviation during 2013-2017.Continuous measurements can be crucial for further air qual-ity improvement by better characterizing PM pollution and chemical compositions in Bei-jing.Here,we conducted simultaneous measurements on PM in Beijing during 2018-2019.Results indicate that annual mean PM1.0 and PM2.5 concentrations were 35.49±18.61 pg/m3 and 66.58±60.17 pg/m3,showing a positive response to emission controls.The contribution of sulfate,nitrate,and ammonium(SNA)played an enhanced role with elevated PM loading and acted as the main contributors to pollution episodes.Discrepancies observed among chemical species between PM1.0 and PM2.5 in spring suggest that sand particles trend to ac-cumulate in the range of 1-2.5 μm.Pollution episodes occurred accompanied with southerly clusters and high formation of SNA by heterogeneous reactions in summer and winter,re-spectively.Results from positive matrix factorization(PMF)combined with potential source contribution function(PSCF)models showed that potential areas were seasonal dependent,secondary and vehicular sources became much more important compared with previous studies in Beijing.Our study presented a continuous investigation on PM and sources ori-gins in Beijing,which provides a better understanding for further emission control as well as a reference for other cities in developing countries.
文献关键词：
中图分类号：
作者姓名：
Lining Luo;Xiaoxuan Bai;Shuhan Liu;Bobo Wu;Wei Liu;Yunqian Lv;Zhihui Guo;Shumin Lin;Shuang Zhao;Yan Hao;Jiming Hao;Kai Zhang;Aihua Zheng;Hezhong Tian
作者机构：
State Key Laboratory of Environmental Simulation and Pollution Control,School of Environment,Beijing Normal University,Beijing 100875,China;Center for Atmospheric Environmental Studies,Beijing Normal University,Beijing 100875,China;School of Environment,Tsinghua University,Beijing 100084,China;Department of Environmental Health Sciences School of Public Health University at Albany,State University of New York One University Place Rensselaer,NY 12144,USA;Analysis and Testing Center,Beijing Normal University,Beijing 100875,China
文献出处：
引用格式：
[1]Lining Luo;Xiaoxuan Bai;Shuhan Liu;Bobo Wu;Wei Liu;Yunqian Lv;Zhihui Guo;Shumin Lin;Shuang Zhao;Yan Hao;Jiming Hao;Kai Zhang;Aihua Zheng;Hezhong Tian-.Fine particulate matter(PM2.5/PM1.0)in Beijing,China:Variations and chemical compositions as well as sources)[J].环境科学学报（英文版）,2022(11):187-198
A类：
erts,gins
B类：
Fine,particulate,matter,PM2,PM1,Beijing,China,Variations,chemical,compositions,well,sources,Particulate,considered,key,atmospheric,pollutants,ex,negative,effects,visibility,global,climate,human,health,by,associated,However,understanding,its,current,environment,still,not,complete,after,witnessing,marked,alleviation,during,Continuous,measurements,can,crucial,further,air,qual,improvement,better,characterizing,pollution,Here,conducted,simultaneous,Results,indicate,that,annual,mean,concentrations,were,pg,showing,positive,response,emission,controls,contribution,sulfate,nitrate,ammonium,SNA,played,enhanced,role,elevated,loading,acted,main,contributors,episodes,Discrepancies,observed,among,species,between,spring,suggest,sand,particles,trend,cumulate,range,Pollution,occurred,accompanied,southerly,clusters,high,formation,heterogeneous,reactions,summer,winter,spectively,from,matrix,factorization,PMF,combined,potential,function,PSCF,models,showed,areas,seasonal,dependent,secondary,vehicular,became,much,more,important,compared,previous,studies,Our,study,presented,continuous,investigation,which,provides,reference,other,cities,developing,countries
AB值：
0.612453
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
