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DOI	10.1016/j.atmosres.2021.105486
	Increases in the formation of water soluble organic nitrogen during Asian dust storm episodes
	Liu Q.; Liu Y.; Zhao Q.; Zhang T.; Schauer J.J.
发表日期	2021
ISSN	0169-8095
卷号	253
英文摘要	There is increasing interest in understanding the origin of atmospheric sources of water soluble organic nitrogen (WSON) and its impact on anthropogenic nutrient pollution for terrestrial and marine ecosystem. This study aims to investigate the role of Asian dust storm on atmospheric water soluble organic nitrogen. PM2.5 samples were collected simultaneously from April 1 to May 21, 2012 at the urban area of Zhangjiakou, Hebei province and the rural area of Tianjin near the coastal line, respectively. PM2.5 mass and chemical compositions including ions, total metals, WSON, organic carbon and elemental carbon were adopted for source apportionment using receptor modeling. The sources of PM2.5 mass at the two sampling sites were coal combustion, secondary source, industrial source, mobile source, dust source and biomass burning. The Asian dust storm was observed at the two sampling sites from April 25 to 28, 2012. Significant increases in WSON concentration from ~1.6 μg m−3 to 12 μg m−3 were found at the urban site (S1), and from ~1.3 μg m−3 to 18 μg m−3 at the coastal site (S2), respectively. Source apportionment results showed that the contributions to WSON from dust source increased from ~10% during normal days to ~45% during dust storm days, while the contributions from other sources kept relative stable (<5%) within normal days and dust storm days. The largest sources contributing to WSON at the two sampling sites were secondary sources and fuel combustions. Our study highlights the important role of Asian dust storm in the cycles of WSON in urban and coastal environments. © 2021 Elsevier B.V.
英文关键词	Asian dust storm; Nitrogen cycles; PM2.5; Water soluble organic nitrogen
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236857
作者单位	Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China; Beijing Centre for Physical and Chemical Analysis, Beijing, China; Zhangjiakou Environmental Protection Bureau, Zhangjiakou, 07500, China; Civil and Environmental Engineering Department, University of Wisconsin-, Madison, WI, United States
推荐引用方式 GB/T 7714	Liu Q.,Liu Y.,Zhao Q.,et al. Increases in the formation of water soluble organic nitrogen during Asian dust storm episodes[J],2021,253.
APA	Liu Q.,Liu Y.,Zhao Q.,Zhang T.,&Schauer J.J..(2021).Increases in the formation of water soluble organic nitrogen during Asian dust storm episodes.Atmospheric Research,253.
MLA	Liu Q.,et al."Increases in the formation of water soluble organic nitrogen during Asian dust storm episodes".Atmospheric Research 253(2021).