Impact of size distributions of major chemical components in fine particles on light extinction in urban Guangzhou
文献类型：期刊论文
| 作者 | Wu, Yunfei4; Cao, Junji1; Wang, Xiaojia4; Ma, Qingxia4; Xiong, Zhe4; Li, Shuanglin6; Zhang, Renjian4; Zhang, Leiming2; Tao, Jun3; Xia, Yunjie4,5 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2017-06-01 |
| 卷号 | 587-588期号:2017页码:240-247 |
| 关键词 | Aerosol Optical Properties Aerosol Chemical Components Pm1 Pm1-2.5 |
| DOI | 10.1016/j.scitotenv.2017.02.127 |
| 文献子类 | Article |
| 英文摘要 | To 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. |
| WOS关键词 | PEARL RIVER-DELTA ; AEROSOL OPTICAL-PROPERTIES ; SOURCE APPORTIONMENT ; SOUTH CHINA ; RADIATIVE PROPERTIES ; RELATIVE-HUMIDITY ; AIR-POLLUTION ; BLACK CARBON ; PM2.5 ; SITE |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000399845800026 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5431]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol, SKLLQG, Xian, Peoples R China 2.Environm & Climate Change Canada, Sci Technol Branch, Air Qual Res Div, Toronto, ON, Canada 3.Minist Environm Protect, South China Inst Environm Sci, Guangzhou, Guangdong, Peoples R China 4.Chinese Acad Sci, Inst Atmospher Phys, CAS Key Lab Reg Climate Environm Temperate East A, Beijing, Peoples R China 5.Chengdu Univ Informat Technol, Coll Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu, Peoples R China 6.Chinese Acad Sci, Inst Atmospher Phys, Nansen Zhu Int Res Ctr, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Yunfei,Cao, Junji,Wang, Xiaojia,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 | Wu, Yunfei.,Cao, Junji.,Wang, Xiaojia.,Ma, Qingxia.,Xiong, Zhe.,...&Xia, Yunjie.(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 | Wu, Yunfei,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. |
入库方式： OAI收割
来源：地球环境研究所
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