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PM2.5 Chemical Compositions and Aerosol Optical Properties in Beijing during the Late Fall
Wang, Huanbo1; Li, Xinghua2; Shi, Guangming1; Cao, Junji3; Li, Chengcai4; Yang, Fumo1; Ma, Yongliang5; He, Kebin5
2015-02-01
发表期刊ATMOSPHERE
ISSN2073-4433
卷号6期号:2页码:164-182
文章类型Article
摘要

Daily PM2.5 mass concentrations and chemical compositions together with the aerosol optical properties were measured from 8-28 November 2011 in Beijing. PM2.5 mass concentration varied from 15.6-237.5 mu g center dot m(-3) and showed a mean value of 111.2 +/- 73.4 mu g center dot m(-3). Organic matter, NH4NO3 and (NH4)(2)SO4 were the major constituents of PM2.5, accounting for 39.4%, 15.4%, and 14.9% of the total mass, respectively, while fine soil, chloride salt, and elemental carbon together accounted for 27.7%. Daily scattering and absorption coefficients (sigma(sc) and sigma(ap)) were in the range of 31.1-667 Mm(-1) and 8.24-158.0 Mm(-1), with mean values of 270 +/- 200 Mm(-1) and 74.3 +/- 43.4 Mm(-1). Significant increases in sigma(sc) and sigma(ap) were observed during the pollution accumulation episodes. The revised IMPROVE algorithm was applied to estimate the extinction coefficient (b(ext)). On average, organic matter was the largest contributor, accounting for 44.6% of b(ext), while (NH4)(2)SO4, NH4NO3, elemental carbon, and fine soil accounted for 16.3% 18.0%, 18.6%, and 2.34% of b(ext), respectively. Nevertheless, the contributions of (NH4)(2)SO4 and NH4NO3 were significantly higher during the heavy pollution periods than those on clean days. Typical pollution episodes were also explored, and it has been characterized that secondary formation of inorganic compounds is more important than carbonaceous pollution for visibility impairment in Beijing.

WOS标题词Science & Technology ; Physical Sciences
DOI10.3390/atmos6020164
关键词[WOS]Atmospheric Aerosol ; Particulate Matter ; Light Extinction ; Air-pollution ; China ; Carbon ; Shanghai ; Urban ; Temperature ; Variability
收录类别SCI
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000350691700001
出版者MDPI AG
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9390
专题粉尘与环境研究室
通讯作者Yang, Fumo
作者单位1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China
2.Beihang Univ, Sch Chem & Environm, Beijing 100191, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710075, Peoples R China
4.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
5.Tsinghua Univ, Sch Environm, State Environm Protect Key Lab Sources & Control, Beijing 100084, Peoples R China
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Wang, Huanbo,Li, Xinghua,Shi, Guangming,et al. PM2.5 Chemical Compositions and Aerosol Optical Properties in Beijing during the Late Fall[J]. ATMOSPHERE,2015,6(2):164-182.
APA Wang, Huanbo.,Li, Xinghua.,Shi, Guangming.,Cao, Junji.,Li, Chengcai.,...&He, Kebin.(2015).PM2.5 Chemical Compositions and Aerosol Optical Properties in Beijing during the Late Fall.ATMOSPHERE,6(2),164-182.
MLA Wang, Huanbo,et al."PM2.5 Chemical Compositions and Aerosol Optical Properties in Beijing during the Late Fall".ATMOSPHERE 6.2(2015):164-182.
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