气候变化领域集成服务门户(CCPortal): Nitrogen isotope characteristics and source apportionment of atmospheric ammonium in urban cities during a haze event in Northern China Plain

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DOI	10.1016/j.atmosenv.2021.118800
	Nitrogen isotope characteristics and source apportionment of atmospheric ammonium in urban cities during a haze event in Northern China Plain
	Xiang Y.-K.; Dao X.; Gao M.; Lin Y.-C.; Cao F.; Yang X.-Y.; Zhang Y.-L.
发表日期	2022
ISSN	1352-2310
卷号	269
英文摘要	Ammonium (NH4+) is a well-known alkaline species for haze formation and possesses potential impacts on human health and biological diversity. To date, regional source apportionments of NH4+ have been poorly understood in Northern China Plain (NCP). In this study, daily PM2.5 samples were synchronously collected in eight cities over the NCP region. In addition to water-soluble ions, the nitrogen isotopic composition of NH4+ (δ15N–NH4+) was also analyzed. The average concentrations of NH4+, a targeted species, varied from 0.9 μg/m³ to 42.5 μg/m³. Note that the significant enhancements of NH4+ coincided with increasing PM2.5 masses, suggesting that NH4+ was one of the contributing species for haze formation. The δ15N–NH4+averaged 12.4 ± 6.9‰ and the average δ15N–NH3 were further calculated to be −9.0 ± 6.7‰ over the NCP region. Both δ15N–NH4+ and δ15N–NH3 showed negative correlations with PM2.5 mass and there were no obvious differences among those 8 cities. Combining air-mass backward trajectories and quantifying contributions of potential sources, we pointed out that non-agricultural sources (fossil fuel related and NH3 slip) were dominant sources (totally contributed 42%–85%) not only on extreme haze phase but also on haze accumulation/dissipation phase in all 8 cities of NCP region in winter, the heating season in North China. However, the contribution of fossil fuel related source reduced to only 20%–35% while livestock breeding source rose to about 15%–32% and NH3 slip source kept contributing about 30% on the extreme haze phase. Thus, we considered that volatilization-related agricultural sources (especially livestock breeding) could discharge considerable NH3 to form SIA-led haze event in urban cities of the NCP region, even though non-agricultural sources were the foremost sources. © 2021 The Authors
关键词	Particulate ammonium Urban ammonia δ15N–NH3 δ15N–NH4+
语种	英语
scopus关键词	Agriculture; Fossil fuels; Isotopes; Nitrogen; Particles (particulate matter); Haze formation; Northern China Plains; Particulate ammonium; Particulates; PM 2.5; Source apportionment; Urban ammonia; Urban cities; Δ15N–NH3; Δ15N–NH4+; Ammonia; ammonia; fossil fuel; nitrogen; water; ammonium compound; fossil fuel; haze; isotopic composition; nitrogen isotope; pollutant source; source apportionment; spatiotemporal analysis; urban area; Article; atmosphere; breeding; China; city; concentration (parameter); controlled study; fractionation; haze; heating; livestock; nonhuman; particulate matter 2.5; relative humidity; time series analysis; urban area; volatilization; water content; water vapor; wind speed; winter; China
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248113
作者单位	Yale–NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change (ILCEC), Nanjing University of Information Science and Technology, Nanjing, 210044, China; Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/ Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science and Technology, Nanjing, 210044, China; Jiangsu Provincial Key Laboratory of Agricultural Meteorology, College of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, 210044, China; China's National Environmental Monitoring Centre, Beijing, China; Department of Geography, Hong Kong Baptist University, Hong KongSAR, China; State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Hong KongSAR, China
推荐引用方式 GB/T 7714	Xiang Y.-K.,Dao X.,Gao M.,et al. Nitrogen isotope characteristics and source apportionment of atmospheric ammonium in urban cities during a haze event in Northern China Plain[J],2022,269.
APA	Xiang Y.-K..,Dao X..,Gao M..,Lin Y.-C..,Cao F..,...&Zhang Y.-L..(2022).Nitrogen isotope characteristics and source apportionment of atmospheric ammonium in urban cities during a haze event in Northern China Plain.ATMOSPHERIC ENVIRONMENT,269.
MLA	Xiang Y.-K.,et al."Nitrogen isotope characteristics and source apportionment of atmospheric ammonium in urban cities during a haze event in Northern China Plain".ATMOSPHERIC ENVIRONMENT 269(2022).