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Characterization, mixing state, and evolution of urban single particles inXi'an (China) during wintertime haze days
Chen,Y(Chen,Yang)[1,2]; Cao,JJ(Cao,Junji)[1]; Huang,RJ(Huang,Rujin)[1,3]; Yang,FM(Yang,Fumo)[2]; Wang,QY(Wang,Qiyuan)[1]; Wang,YC(Wang,Yichen)[1]
2016-10-15
发表期刊Science of the Total Environment
卷号573期号:2016页码:973-945
文章类型期刊论文
摘要

A Single Particle Aerosol Mass Spectrometer (SPAMS) was deployed in the urban area of Xi'an to investigate size-resolved chemical composition and mixing state of single particles during the heavy haze episode occurred from January 13 to January 27 in 2013. Nine major single particle types were resolved with ART-2a algorithm including biomass burning (BB), Potassium-Secondary (KSec), elemental and organic Carbon (ECOC), sodium-potassium-rich ECOC (NaKECOC), sodium-potassium-rich-secondary (NaKSec), EC, OC, and Dust. Daily PM2.5 mass concentration was 213 ± 122 μg m− 3. ~ 96% of the ambient particles were carbonaceous and internally mixed with secondary species such as sulfate and nitrate. The major particle types were from combustion sources, including coal burning, biomass burning, and vehicle exhaust. Mixing state analysis suggests gas-to-particle conversion was an important mechanism forming organic species during the winter haze episode. The relative abundances of the aged particle types, such as KSec and NaKSec increased with the elevated RH when RH < 80%. The fraction of aged particles in terms of number concentration was prominent during high levels of PM2.5 under stagnant air conditions. This study gained new knowledge on atmospheric aerosol formation and evolution in urban environment heavy winter haze condition.

DOI10.1016/j.scitotenv.2016.08.151
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5910
专题粉尘与环境研究室
作者单位1.Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China;
2.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China;
3.Laboratory of Atmospheric Chemistry, Paul Scherrer Institut (PSI), CH-5232 Villigen PSI, Switzerland
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GB/T 7714
Chen,Y,Cao,JJ,Huang,RJ,et al. Characterization, mixing state, and evolution of urban single particles inXi'an (China) during wintertime haze days[J]. Science of the Total Environment,2016,573(2016):973-945.
APA Chen,Y,Cao,JJ,Huang,RJ,Yang,FM,Wang,QY,&Wang,YC.(2016).Characterization, mixing state, and evolution of urban single particles inXi'an (China) during wintertime haze days.Science of the Total Environment,573(2016),973-945.
MLA Chen,Y,et al."Characterization, mixing state, and evolution of urban single particles inXi'an (China) during wintertime haze days".Science of the Total Environment 573.2016(2016):973-945.
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