气候变化领域集成服务门户(CCPortal): The promotion effect of nitrous acid on aerosol formation in wintertime in Beijing: The possible contribution of traffic-related emissions

CCPortal

DOI	10.5194/acp-20-13023-2020
	The promotion effect of nitrous acid on aerosol formation in wintertime in Beijing: The possible contribution of traffic-related emissions
	Liu Y.; Zhang Y.; Lian C.; Yan C.; Feng Z.; Zheng F.; Fan X.; Chen Y.; Wang W.; Chu B.; Wang Y.; Cai J.; Du W.; R. Daellenbach K.; Kangasluoma J.; Bianchi F.; Kujansuu J.; Petäjä T.; Wang X.; Hu B.; Wang Y.; Ge M.; He H.; Kulmala M.
发表日期	2020
ISSN	1680-7316
起始页码	13023
结束页码	13040
卷号	20 期号:21
英文摘要	Secondary aerosols are a major component of PM2:5, yet their formation mechanisms in the ambient atmosphere are still unclear. Based on field measurements in downtown Beijing, we show that the photolysis of nitrous acid (HONO) may promote the formation of organic and nitrate aerosols in winter in Beijing, which is supported by the fact that the mass concentrations of organic and nitrate aerosols linearly increase as a function of HONO consumed from early morning to noon. The increased nitrate content also leads to the formation of ammonium particulate matter through enhancing the neutralization of nitrate and sulfate by ammonia. We further illustrate that during pollution events in winter in Beijing, over 50% of the ambient HONO may be related to traffic-related emissions, including direct emissions and formation via the reaction between OH and vehicle-emitted NO. Overall, our results indicate that trafficrelated HONO may play an important role in the oxidative capacity and in turn contribute to haze formation in winter in Beijing. The mitigation of HONO and NOx emissions from vehicles may be an effective way to reduce the formation of secondary aerosols and severe haze events in winter in Beijing. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	aerosol formation; ambient air; concentration (composition); formation mechanism; nitrous acid; particulate matter; photolysis; traffic emission; winter; Beijing [China]; China
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247407
作者单位	Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China; State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; Institute for Atmospheric and Earth System Research, Faculty of Science, University of Helsinki, Helsinki, 00014, Finland; State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; University of Chinese Academy of Sciences, Beijing, 100049, China
推荐引用方式 GB/T 7714	Liu Y.,Zhang Y.,Lian C.,et al. The promotion effect of nitrous acid on aerosol formation in wintertime in Beijing: The possible contribution of traffic-related emissions[J],2020,20(21).
APA	Liu Y..,Zhang Y..,Lian C..,Yan C..,Feng Z..,...&Kulmala M..(2020).The promotion effect of nitrous acid on aerosol formation in wintertime in Beijing: The possible contribution of traffic-related emissions.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(21).
MLA	Liu Y.,et al."The promotion effect of nitrous acid on aerosol formation in wintertime in Beijing: The possible contribution of traffic-related emissions".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.21(2020).