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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
Source PublicationScience of the Total Environment
Volume573Issue:2016Pages:973-945
Subtype期刊论文
Abstract

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
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5910
Collection粉尘与环境研究室
Affiliation1.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
Recommended Citation
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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