Significant concentration changes of chemical components of PMinf1/inf in the Yangtze River Delta area of China and the implications for the formation mechanism of heavy haze-fog pollution (EI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	Significant concentration changes of chemical components of PMinf1/inf in the Yangtze River Delta area of China and the implications for the formation mechanism of heavy haze-fog pollution (EI)
	Zhang Y. W.; Zhang X. Y.; Zhang Y. M.; Shen X. J.; Sun J. Y.; Ma Q. L.; Yu X. M.; Zhu J. L.; Zhang L.; Che H. C.
刊名	Science of the Total Environment
	2015
卷号	538 页码:7-15
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 PMinf1/inf 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 PMinf1/inf was 212gmsup-3/sup in the heavy haze-fog period, which was about 10 times higher than on clean days and featured a peak mass concentration that reached 298gmsup-3/sup. Organics were the largest contributor to the dramatic rise of PMinf1/inf on heavy haze-fog days (average mass concentration of 86gmsup-3/sup), followed by nitrate (58gmsup-3/sup), sulfate (35gmsup-3/sup), ammonium (29gmsup-3/sup), and chloride (4.0gmsup-3/sup). Nitrate exhibited the largest increase (~20 factors), associated with a significant increase in NOinfx/inf. 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 Oinf3/inf. 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. 2015.
收录类别	EI
语种	英语
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/27036]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
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 PMinf1/inf in the Yangtze River Delta area of China and the implications for the formation mechanism of heavy haze-fog pollution (EI)[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 PMinf1/inf in the Yangtze River Delta area of China and the implications for the formation mechanism of heavy haze-fog pollution (EI).Science of the Total Environment,538,7-15.
MLA	Zhang Y. W.,et al."Significant concentration changes of chemical components of PMinf1/inf in the Yangtze River Delta area of China and the implications for the formation mechanism of heavy haze-fog pollution (EI)".Science of the Total Environment 538(2015):7-15.