Source Apportionment of Aerosol Ammonium in an Ammonia-Rich Atmosphere: An Isotopic Study of Summer Clean and Hazy Days in Urban Beijing

doi:10.1029/2017JD028095

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	Source Apportionment of Aerosol Ammonium in an Ammonia-Rich Atmosphere: An Isotopic Study of Summer Clean and Hazy Days in Urban Beijing
	Pan, Yuepeng 2; Tian, Shili 2; Liu, Dongwei 3; Fang, Yunting 3; Zhu, Xiaying 4; Gao, Meng 5; Wentworth, Gregory R.1; Michalski, Greg 6; Huang, Xiaojuan 2; Wang, Yuesi 2
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2018-05-27
卷号	123 期号:10 页码:5681-5689
关键词	ammonia ammonium stable nitrogen isotope source apportionment haze pollution North China Plain
ISSN号	2169-897X
DOI	10.1029/2017JD028095
通讯作者	Pan, Yuepeng(panyuepeng@mail.iap.ac.cn) ; Fang, Yunting(fangyt@iae.ac.cn)
英文摘要	Aerosol ammonium (NH4+) can be a major component of fine particles, especially during severe haze episodes. The abatement of ammonia (NH3) emissions is important for reducing fine particles, but NH3 sources remain poorly constrained and are largely unregulated in China and most other regions. This study uses stable isotopes to interpret the role NH3 sources play in generating different sized NH4+ aerosols in Beijing between 21 June and 4 July 2013 with fine particle concentrations of 20-242g/m(3). The concentrations and nitrogen stable isotope composition of aerosol NH4+ (N-15-NH4+) were both elevated during the five haze episodes that were sampled. These increases were driven by enhancements in the fine mode as opposed to substantial increases in the coarse mode aerosol. After accounting for the isotope fractionation that occurs during gas-to-particle partitioning (17.7 to 28.2), the initial (prepartitioning) N-15-NH3 values were estimated to be -35 for a clean period (i.e., a nonhazy day) and ranged from -14.3 to -22.8 parts per thousand for hazy days. Source apportionment using the IsoSources isotopic mixing model indicated that the dominant contribution to NH3 shifted from agricultural sources during the clean period (86%) to fossil fuel emissions (54%-81%) during hazy days and when back trajectories rotate from the northwest to the west and/or south. These results together suggest that even in summer, fossil fuel-related sources from Beijing and the surrounding areas are the major source of NH3 during haze events and that controlling these sources may be important for alleviating particulate matter pollution.
资助项目	National Key Research and Development Program of China[2017YFC0210100] ; National Key Research and Development Program of China[2017YFC0212700] ; National Natural Science Foundation of China[41405144] ; National Natural Science Foundation of China[41773094]
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000435445600053
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/128700]
专题	金属研究所_中国科学院金属研究所
通讯作者	Pan, Yuepeng; Fang, Yunting
作者单位	1.Alberta Environm & Pk, Environm Monitoring & Sci Div, Edmonton, AB, Canada 2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang, Liaoning, Peoples R China 4.China Meteorol Adm, Natl Climate Ctr, Beijing, Peoples R China 5.Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA USA 6.Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA
推荐引用方式 GB/T 7714	Pan, Yuepeng,Tian, Shili,Liu, Dongwei,et al. Source Apportionment of Aerosol Ammonium in an Ammonia-Rich Atmosphere: An Isotopic Study of Summer Clean and Hazy Days in Urban Beijing[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(10):5681-5689.
APA	Pan, Yuepeng.,Tian, Shili.,Liu, Dongwei.,Fang, Yunting.,Zhu, Xiaying.,...&Wang, Yuesi.(2018).Source Apportionment of Aerosol Ammonium in an Ammonia-Rich Atmosphere: An Isotopic Study of Summer Clean and Hazy Days in Urban Beijing.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(10),5681-5689.
MLA	Pan, Yuepeng,et al."Source Apportionment of Aerosol Ammonium in an Ammonia-Rich Atmosphere: An Isotopic Study of Summer Clean and Hazy Days in Urban Beijing".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.10(2018):5681-5689.