Evolution of secondary inorganic and organic aerosols during transport:   A case study at a regional receptor site

doi:10.1016/j.envpol.2016.08.003

CORC > 北京大学 > 环境科学与工程学院

	Evolution of secondary inorganic and organic aerosols during transport: A case study at a regional receptor site
	Peng, Jianfei ; Hu, Min ; Gong, Zhaoheng ; Tian, Xudong ; Wang, Ming ; Zheng, Jing ; Guo, Qingfeng ; Cao, Wei ; Lv, Wei ; Hu, Weiwei ; Wu, Zhijun ; Guo, Song
刊名	ENVIRONMENTAL POLLUTION
	2016
关键词	Urban emission Pollutant transport Secondary formation Evolution of atmospheric aerosols YANGTZE-RIVER DELTA RESOLVED CHEMICAL-CHARACTERIZATION CONDENSATION NUCLEI CCN PARTICULATE MATTER SUBMICRON AEROSOLS PARTICLE FORMATION EASTERN CHINA AIR-POLLUTION AIRCRAFT INSIGHTS
DOI	10.1016/j.envpol.2016.08.003
英文摘要	Understanding the evolution of aerosols in the atmosphere is of great importance for improving air quality and reducing aerosol-related uncertainties in global climate simulations. Here, a unique haze episode at a regional receptor site near the East China Sea was examined as a case study of the aging process of atmospheric aerosols during transport. An increase in photochemical age from 5 h. to more than 25 h and a progressive increase in the fitted mean particle diameter from 70 nm to approximately 300 nm were observed. According to the pollution features and meteorology conditions involved, pollution accumulation (PA), sea breeze (SB), and land breeze (LB) periods were identified. Concentrations of black carbon (BC), hydrocarbon-like organic aerosols (HOA), semi-volatile oxidized organic aerosols (SV-OOA), and nitrate increased by 7-fold up to 39-fold when the air masses passed through Taizhou, a nearby city. In addition, nitrate and SV-OOA dominated the aerosol composition in the urban outflow plumes (52% and 18%, respectively), yet they gradually decreased in concentration during transport. In contrast, sulfate and the low-volatile oxidized organic aerosols (LV-OOA) exhibited more regional footprints and potentially have similar formation mechanisms. The atomic oxygen-to-carbon (O/C) ratio also increased from 0.45 to 0.9, thereby suggesting that rapid formation of highly oxidized secondary organic aerosols (SOA) occurred during transport. Overall, these results provide valuable insight into the evolution of the chemical and physical features of aerosol pollution during transport and also highlight the need for regulatory controls of nitrogen oxides, sulfur dioxide, and VOCs to improve air quality on different scales. (C) 2016 Published by Elsevier Ltd.; National Basic Research Program of the Ministry of Science and Technology of China [2013CB228503]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB05010500]; National Natural Science Foundation of China [21190052]; Environmental Monitoring Center of Zhejiang Province, China; SCI(E); PubMed; ARTICLE; minhu@pku.edu.cn; 794-803; 218
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/493221]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Peng, Jianfei,Hu, Min,Gong, Zhaoheng,et al. Evolution of secondary inorganic and organic aerosols during transport: A case study at a regional receptor site[J]. ENVIRONMENTAL POLLUTION,2016.
APA	Peng, Jianfei.,Hu, Min.,Gong, Zhaoheng.,Tian, Xudong.,Wang, Ming.,...&Guo, Song.(2016).Evolution of secondary inorganic and organic aerosols during transport: A case study at a regional receptor site.ENVIRONMENTAL POLLUTION.
MLA	Peng, Jianfei,et al."Evolution of secondary inorganic and organic aerosols during transport: A case study at a regional receptor site".ENVIRONMENTAL POLLUTION (2016).