气候变化领域集成服务门户(CCPortal): Fine particle characterization in a coastal city in China: Composition, sources, and impacts of industrial emissions

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DOI	10.5194/acp-20-2877-2020
	Fine particle characterization in a coastal city in China: Composition, sources, and impacts of industrial emissions
	Lei L.; Xie C.; Wang D.; He Y.; Wang Q.; Zhou W.; Hu W.; Fu P.; Chen Y.; Pan X.; Wang Z.; R Worsnop D.; Sun Y.
发表日期	2020
ISSN	1680-7316
起始页码	2877
结束页码	2890
卷号	20 期号:5
英文摘要	Aerosol composition and sources have been extensively studied in developed regions in China. However, aerosol chemistry in coastal regions of eastern China with high industrial emissions remains poorly characterized. Here we present a comprehensive characterization of aerosol composition and sources near two large steel plants in a coastal city in Shandong in fall and spring using a PM2.5 time of-flight aerosol chemical speciation monitor. The average (±1σ) mass concentration of PM2.5 in spring 2019 (54 ± 44 μgm-3) was approximately twice that (26±23 μgm-3) in fall 2018. Aerosol composition was substantially different between the two seasons. While organics accounted for ∼ 30% of the total PM2.5 mass in both seasons, sulfate showed a considerable decrease from 28% in September to 16% in March, which was associated with a large increase in nitrate contribution from 17% to 32 %. Positive matrix factorization analysis showed that secondary organic aerosol (SOA) dominated the total OA in both seasons, accounting on average for 92% and 86 %, respectively, while the contribution of traffic-related hydrocarbon-like OA was comparable (8 %-9 %). During this study, we observed significant impacts of steel plant emissions on aerosol chemistry nearby. The results showed that aerosol particles emitted from the steel plants were overwhelmingly dominated by ammonium sulfate and/or ammonium bisulfate with the peak concentration reaching as high as 224 μgm-3. Further analysis showed similar mass ratios for NOx=CO (0.014) and NOx=SO2 (1.24) from the two different steel plants, which were largely different from those during periods in the absence of industrial plumes. Bivariate polar plot analysis also supported the dominant source region of ammonium sulfate, CO, and SO2 from the southwest steel plants. Our results might have significant implications for better quantification of industrial emissions using ammonium sulfate and the ratios of gaseous species as tracers in industrial regions and nearby in the future. © 2020 Author(s).
语种	英语
scopus关键词	aerosol; aerosol composition; atmospheric plume; coastal zone; industrial emission; seasonal variation; traffic emission; urban area; China; Shandong
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247928
作者单位	State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China; Institute of Surface-Earth System Science, Tianjin University, Tianjin, 300072, China; Aerodyne Research Inc., Billerica, MA 01821, United States
推荐引用方式 GB/T 7714	Lei L.,Xie C.,Wang D.,et al. Fine particle characterization in a coastal city in China: Composition, sources, and impacts of industrial emissions[J],2020,20(5).
APA	Lei L..,Xie C..,Wang D..,He Y..,Wang Q..,...&Sun Y..(2020).Fine particle characterization in a coastal city in China: Composition, sources, and impacts of industrial emissions.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(5).
MLA	Lei L.,et al."Fine particle characterization in a coastal city in China: Composition, sources, and impacts of industrial emissions".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.5(2020).