globalchange  > 气候变化与战略
DOI: 10.1016/j.atmosenv.2020.117569
论文题名:
Evolution of source contributions during heavy fine particulate matter (PM2.5) pollution episodes in eastern China through online measurements
作者: Shen J.; Zhao Q.; Cheng Z.; Huo J.; Zhu W.; Zhang Y.; Duan Y.; Wang X.; Antony Chen L.-W.; Fu Q.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 232
语种: 英语
英文关键词: Aerosols ; Boundary layers ; Coal ; Coal combustion ; Factorization ; Nitrates ; Nitric oxide ; Organic carbon ; Pollution control ; Sulfur compounds ; Temperature ; Wind ; Fine particulate matter (PM2.5) ; Planetary boundary layers ; Positive Matrix Factorization ; Primary organic carbons ; Secondary inorganic aerosol ; Secondary organic aerosols ; Source apportionment ; Source contributions ; Particles (particulate matter) ; ammonia ; barium ion ; calcium ion ; carbon ; carbon monoxide ; chromium ; coal ; iron ; lead ; manganese ; nickel ; nitrate ; nitric oxide ; nitrogen oxide ; organic carbon ; selenium ; sodium chloride ; sulfate ; sulfur dioxide ; zinc ion ; atmospheric pollution ; coal combustion ; episodic event ; measurement method ; particulate matter ; source apportionment ; strategic approach ; aerosol ; air pollution ; Article ; blind source separation ; boundary layer ; China ; combustion ; concentration process ; control strategy ; environmental monitoring ; exhaust gas ; low temperature ; meteorological phenomena ; molecular evolution ; multilinear engine 2 ; online analysis ; particulate matter ; positive matrix factorization ; priority journal ; seasonal variation ; secondary organic aerosol ; wind speed ; winter ; China
学科: Chemical components ; Fine particulate matter (PM2.5) ; Heavy pollution events ; Receptor model ; Source apportionment
中文摘要: Ambient heavy fine particulate matter (PM2.5) pollution events occur frequently during winter seasons in eastern China. Investigating the evolution of source contributions during heavy pollution episodes is critical for strategies of pollution relief. In this study, a two-month field campaign was conducted in the winters of 2015 and 2016 at a regional supersite in eastern China and over one thousand hourly online measurements for twenty PM2.5 species were obtained. Hourly source apportionment for the total mass of PM2.5, and its major species (primary organic carbon, elemental carbon, nitrate, sulfate and ammonium), were then performed by Positive Matrix Factorization (PMF) and Multilinear Engine-2 (ME2) models. Three PM2.5 heavy pollution episodes including ten high concentration peaks were identified for further analysis. Results showed that ME2 performed better than PMF by fixing source profiles of secondary nitrate, secondary sulfate and sea salt, although they have dominant consistencies. Two types of pollution sources were identified from high PM2.5 mass peaks: coal combustion-oriented responsible for four peaks and secondary inorganic aerosol-oriented responsible for the remaining six peaks. Low wind speed and planetary boundary layer favorited the coal combustion-oriented peaks, but also weakened the secondary inorganic formation due to low temperature and accumulated nitric oxide. Primary emissions from coal combustion can contribute 18% to ammonium in addition to 72% from secondary inorganic aerosol. Secondary organic aerosol would contribute 20% of PM2.5 mass during the heaviest episodes. Findings in this study provide insights into the causes of heavy pollution episodes and support implementing effective control strategies to mitigate heavy pollution events in eastern China. © 2020 Elsevier Ltd
Citation statistics:
被引频次[WOS]:16   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160747
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Shanghai Environmental Monitoring Center, Shanghai, 200235, China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China; Division of Atmospheric Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, United States; Department of Environmental and Occupational Health, School of Public Health, University of Nevada, Las Vegas, NV 89154, United States

Recommended Citation:
Shen J.,Zhao Q.,Cheng Z.,et al. Evolution of source contributions during heavy fine particulate matter (PM2.5) pollution episodes in eastern China through online measurements[J]. Atmospheric Environment,2020-01-01,232
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Shen J.]'s Articles
[Zhao Q.]'s Articles
[Cheng Z.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Shen J.]'s Articles
[Zhao Q.]'s Articles
[Cheng Z.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Shen J.]‘s Articles
[Zhao Q.]‘s Articles
[Cheng Z.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.