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Reapportioning the sources of secondary components of PM2.5: combined application of positive matrix factorization and isotopic evidence

文献类型：期刊论文

作者Sun, Zeyu1,2,4; Zong, Zheng1,2; Tian, Chongguo1,2; Li, Jun3; Sun, Rong3,4; Ma, Wenwen1,2,4; Li, Tingting3,4; Zhang, Gan3
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2021-04-10
卷号764页码:7
ISSN号0048-9697
关键词Secondary particulate matter Source apportionment PMF model Isotope
DOI10.1016/j.scitotenv.2020.142925
通讯作者Tian, Chongguo(cgtian@yic.ac.cn) ; Li, Jun(junli@gig.ac.cn)
英文摘要Secondary particles account fora considerable proportion of fine particles (PM2.5) and reasonable reapportioning them to primary sources is critical for designing effective strategies for air quality improvement. This study developed a method which can reapportion secondary sources of PM2.5 solved by positive matrix factorization (PMF) to primary sources based on the isotopic signals of nitrate, ammonium and sulfate. Actual PM2.5 data in Beijing were used as a case study to assess the feasibility and capacity of this method. In the case, 20 chemical components were used to apportion PM2.5 sources and source contributions of nitrate were applied to reapportion secondary source to primary sources. The model performance was also estimated by radiocarbon measurement (C-14) of organic (OC) and elemental (EC) carbons of eight samples. The PMF apportioned seven sources: the secondary source (36.1%), vehicle exhausts (18.7%), industrial sources (13.6%), biomass burning (11.4%), coal combustion (8.10%), construction dust (7.93%) and fuel oil combustion (424%). After the reapportionment of the secondary source, vehicle exhausts (28.7%) contributed the most to PM2.5, followed by biomass burning (25.1%) and industrial sources (18.9%). Fossil oil combustion and coal combustion increased to 8.00% and 11.4%, respectively, and construction dust contributed the least. The average gap between contributions of identified sources to OC and EC and the C-14 measurements decreased 2.5 +/- 12% after the reapportionment than 132 +/- 10.8%, indicating the good performance of the developed method. (C) 2020 Elsevier B.V. All rights reserved.
资助项目National Natural Science Foundation of China[41977190] ; National Natural Science Foundation of China[41907198] ; National Natural Science Foundation of China[U1806207] ; seed project of Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences[YIC Y855011021] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515011175]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000614249600104
资助机构National Natural Science Foundation of China ; seed project of Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences ; Guangdong Basic and Applied Basic Research Foundation
源URL[http://ir.yic.ac.cn/handle/133337/27396]  
专题烟台海岸带研究所_近岸生态与环境实验室
烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
通讯作者Tian, Chongguo; Li, Jun
作者单位1.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc,YICCAS, Yantai 264003, Peoples R China
3.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Zeyu,Zong, Zheng,Tian, Chongguo,et al. Reapportioning the sources of secondary components of PM2.5: combined application of positive matrix factorization and isotopic evidence[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,764:7.
APA Sun, Zeyu.,Zong, Zheng.,Tian, Chongguo.,Li, Jun.,Sun, Rong.,...&Zhang, Gan.(2021).Reapportioning the sources of secondary components of PM2.5: combined application of positive matrix factorization and isotopic evidence.SCIENCE OF THE TOTAL ENVIRONMENT,764,7.
MLA Sun, Zeyu,et al."Reapportioning the sources of secondary components of PM2.5: combined application of positive matrix factorization and isotopic evidence".SCIENCE OF THE TOTAL ENVIRONMENT 764(2021):7.

入库方式： OAI收割

来源：烟台海岸带研究所

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