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	Significant concentration changes of chemical components of PM1 in the Yangtze River Delta area of China and the implications for the formation mechanism of heavy haze-fog pollution
	Zhang, Y. W.1; Zhang, X. Y.1; Zhang, Y. M.1; Shen, X. J.1; Sun, J. Y.1,2; Ma, Q. L.3; Yu, X. M.3; Zhu, J. L.4; Zhang, L.1,5; Che, H. C.1,5
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2015-12-15
卷号	538页码:7-15
关键词	Haze-fog event PM1 Chemical compositions Mass-size distributions
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2015.06.104
通讯作者	Zhang, X. Y.(xiaoye@cams.cma.gov.cn)
英文摘要	Since the winter season of 2013, a number of persistent haze-fog events have occurred in central-eastern China. Continuous measurements of the chemical and physical properties of PM1 at a regional background station in the Yangtze River Delta area of China from 16 Nov. to 18 Dec., 2013 revealed several haze-fog events, among which a heavy haze-fog event occurred between 6 Dec. and 8 Dec. The mean concentration of PM1 was 212 mu g m(-3) in the heavy haze-fog period, which was about 10 times higher than on clean days and featured a peak mass concentration that reached 298 mu g m(-3). Organics were the largest contributor to the dramatic rise of PM1 on heavy haze-fog days (average mass concentration of 86 mu g m(-3)), followed by nitrate (58 mu g m(-3)), sulfate (35 mu g m(-3)), ammonium (29 mu g m(-3)), and chloride (4.0 mu g m(-3)). Nitrate exhibited the largest increase (similar to 20 factors), associated with a significant increase in NOx. This was mainly attributable to increased coal combustion emissions, relative to motor vehicle emissions, and was caused by short-distance pollutant transport within surrounding areas. Low-volatility oxidized organic aerosols (OA) (LV-OOA) and biomass-burning OA (BBOA) also increased sharply on heavy haze-fog days, exhibiting an enhanced oxidation capacity of the atmosphere and increased emissions from biomass burning. The strengthening of the oxidation capacity during the heavy pollution episode, along with lower solar radiation, was probably due to increased biomass burning, which were important precursors of O-3. The prevailing meteorological conditions, including low wind and high relative humidity, and short distance transported gaseous and particulate matter surrounding of the sampling site, coincided with the increased pollutant concentrations mainly from biomass-burning mentioned above to cause the persistent haze-fog event in the YRD area. (C) 2015 The Authors. Published by Elsevier B.V.
收录类别	SCI
WOS关键词	AEROSOL MASS-SPECTROMETER ; SOURCE APPORTIONMENT ; SUBMICRON AEROSOLS ; ORGANIC AEROSOL ; JANUARY 2013 ; EPISODE ; PARTICLES ; EVENTS ; URBAN ; SIZE
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000363348900002
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557209
专题	寒区旱区环境与工程研究所
通讯作者	Zhang, X. Y.
作者单位	1.Chinese Acad Meteorol Sci, Key Lab Atmospher Chem, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China 3.Linan Reg Air Background Stn, Linan 311307, Peoples R China 4.Nanjing Univ, Sch Atmospher Sci, Nanjing 210093, Jiangsu, Peoples R China 5.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Y. W.,Zhang, X. Y.,Zhang, Y. M.,et al. Significant concentration changes of chemical components of PM1 in the Yangtze River Delta area of China and the implications for the formation mechanism of heavy haze-fog pollution[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2015,538:7-15.
APA	Zhang, Y. W..,Zhang, X. Y..,Zhang, Y. M..,Shen, X. J..,Sun, J. Y..,...&Che, H. C..(2015).Significant concentration changes of chemical components of PM1 in the Yangtze River Delta area of China and the implications for the formation mechanism of heavy haze-fog pollution.SCIENCE OF THE TOTAL ENVIRONMENT,538,7-15.
MLA	Zhang, Y. W.,et al."Significant concentration changes of chemical components of PM1 in the Yangtze River Delta area of China and the implications for the formation mechanism of heavy haze-fog pollution".SCIENCE OF THE TOTAL ENVIRONMENT 538(2015):7-15.

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