DOI: 10.1016/j.atmosres.2018.01.002
Scopus记录号: 2-s2.0-85044346996
论文题名: Characteristics of individual particles in Beijing before, during and after the 2014 APEC meeting
作者: Xu Z. ; Shan W. ; Qi T. ; Gao J.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 203 起始页码: 254
结束页码: 260
语种: 英语
英文关键词: APEC
; Beijing
; Emission control
; Individual particles
; SEM-EDX
Scopus关键词: Aerosols
; Aggregates
; Air quality
; Coal combustion
; Emission control
; Fly ash
; Iron oxides
; Nitrogen compounds
; Scanning electron microscopy
; Soot
; Sulfur compounds
; Tar
; Aerosol particles
; APEC
; Beijing
; Carbonaceous particles
; Emission control measures
; Energy dispersive x-ray
; Individual particles
; SEM-EDX
; Quality control
英文摘要: To understand the characteristics of individual aerosol particles as well as the effects of emission control measures on the air quality in Beijing before, during and after the 2014 APEC meeting, aerosol samples collected in Beijing from Oct. 8 to Nov. 24 were investigated by a scanning electron microscopy (SEM) coupled with an energy-dispersive X-ray (EDX). Individual particles were classified into fly ash, ammonium sulfate, carbonaceous particle, tar ball, soot aggregates, Fe/Ti oxide, Ca/Mg carbonate, calcium sulfate and aluminosilicates/quartz. The results showed that PM0.5–1.0 was predominant in aerosol particles while PM2.5–10 was the fewest in aerosol particles. Soot aggregates and carbonaceous particles mainly located in the size range of 0.5–2.5 μm and mineral particles were dominant in the size range of 2.5–10 μm. The tough emission control measures taken by the local government greatly improved the air quality. Reducing vehicles on the roads substantially decreased the amount of soot aggregates, and restricting coal combustion decreased the amount of tar ball during the APEC meeting. The concentrations of carbonaceous and mineral particles abated probably owing to the control on VOCs emission, and water spray and demolition layoff, respectively, during the APEC meeting. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108940
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
Recommended Citation:
Xu Z.,Shan W.,Qi T.,et al. Characteristics of individual particles in Beijing before, during and after the 2014 APEC meeting[J]. Atmospheric Research,2018-01-01,203