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Impact of size distributions of major chemical components in fine particles on light extinction in urban Guangzhou
Xia, Yunjie1,2; Tao, Jun3; Zhang, Leiming4; Zhang, Renjian2; Li, Shuanglin5; Wu, Yunfei2; Cao, Junji6; Wang, Xiaojia2; Ma, Qingxia2; Xiong, Zhe2
2017-06-01
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
Volume587-588Issue:2017Pages:240-247
SubtypeArticle
AbstractTo evaluate the impact of fine particulate matter (PM2.5) size distribution on aerosol chemical and optical properties, dominant chemical components including water-soluble inorganic ions (WSII), organic carbon (OC) and elemental carbon (EC) in PM1 and PM2.5, aerosol scattering coefficient (bap), and aerosol absorption coefficient (bap) were collected synchronously at an urban site in Guangzhou, south China during a typical summer month in 2009 and a winter month in 2010. PM1 (sizes smaller than 1 mu m) constituted 77% and 63% of PM2.5 in summer and winter, respectively. From the reconstructed mass concentrations, the sum of SO42-, NO3- and NH4+(SNA) distributed more in PM1 than in PM1-2.5 (PM2.5 minus PM1) in summer and the opposite was found in winter, while carbonaceous aerosols distributed more in PM1 in both summer and winter. With the aggravation of PM2.5 pollution, the mass fraction of PM1/PM2.5 increased for (NH4)(2)SO4 (AS), NH4NO3 (AN) and EC but decreased for organic matter (OM) in summer, and the opposite was found in winter. Bap of PM1 and PM1-2.5 was estimated from the mass extinction efficiencies (MSEs) of the dominant chemical components, which showed good correlations (R-2 = 0.99) with measured ones and those estimated using the IMPROVE formula. The fractional contributions of dominant chemical components to extinction coefficient (b(ext)) were consistent with their respective mass size distributions, indicating the importance of chemically-resolved aerosol size distributions on aerosol optical properties and haze formation. (C) 2017 Elsevier B.V. All rights reserved.
KeywordAerosol Optical Properties Aerosol Chemical Components Pm1 Pm1-2.5
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.scitotenv.2017.02.127
WOS KeywordPEARL RIVER-DELTA ; AEROSOL OPTICAL-PROPERTIES ; SOURCE APPORTIONMENT ; SOUTH CHINA ; RADIATIVE PROPERTIES ; RELATIVE-HUMIDITY ; AIR-POLLUTION ; BLACK CARBON ; PM2.5 ; SITE
Indexed BySCI
Language英文
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000399845800026
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5431
Collection粉尘与环境研究室
Affiliation1.Chengdu Univ Informat Technol, Coll Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu, Peoples R China
2.Chinese Acad Sci, Inst Atmospher Phys, CAS Key Lab Reg Climate Environm Temperate East A, Beijing, Peoples R China
3.Minist Environm Protect, South China Inst Environm Sci, Guangzhou, Guangdong, Peoples R China
4.Environm & Climate Change Canada, Sci Technol Branch, Air Qual Res Div, Toronto, ON, Canada
5.Chinese Acad Sci, Inst Atmospher Phys, Nansen Zhu Int Res Ctr, Beijing, Peoples R China
6.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol, SKLLQG, Xian, Peoples R China
Recommended Citation
GB/T 7714
Xia, Yunjie,Tao, Jun,Zhang, Leiming,et al. Impact of size distributions of major chemical components in fine particles on light extinction in urban Guangzhou[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,587-588(2017):240-247.
APA Xia, Yunjie.,Tao, Jun.,Zhang, Leiming.,Zhang, Renjian.,Li, Shuanglin.,...&Xiong, Zhe.(2017).Impact of size distributions of major chemical components in fine particles on light extinction in urban Guangzhou.SCIENCE OF THE TOTAL ENVIRONMENT,587-588(2017),240-247.
MLA Xia, Yunjie,et al."Impact of size distributions of major chemical components in fine particles on light extinction in urban Guangzhou".SCIENCE OF THE TOTAL ENVIRONMENT 587-588.2017(2017):240-247.
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