Effect of hydrolysis of N2O5 on nitrate and ammonium formation in Beijing China: WRF-Chem model simulation

doi:10.1016/j.scitotenv.2016.11.125

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	Effect of hydrolysis of N2O5 on nitrate and ammonium formation in Beijing China: WRF-Chem model simulation
	Su, Xing 1,6; Huang, Rujin 3,6; Feng, Tian 2,6; Long, Xin 6; Xu, Ruiguang 1,6; Tie, Xuexi 4,5,6; Li, Guohui 6; Cao, Junji 6
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2017-02-01
卷号	579 期号:2017 页码:221-229
关键词	Hydrolysis Of N2o5 Nitrate And Ammonium Beijing Wrf-chem
DOI	10.1016/j.scitotenv.2016.11.125
文献子类	Article
英文摘要	Beijing, the capital of China, is a mega city with a population of >20 million. In recent years, the city has experienced heavy air pollution, with particulate matter (PM) being one of its top pollutants. In the last decade, extensive efforts have been made to characterize the sources, properties, and processes of PM in Beijing. Despite progress made by previous studies, there are still some important questions to be answered and addressed. The focus of this research is to study the impact of the heterogeneous hydrolysis of N2O5 on the formation of nitrate (NOT) and ammonium (NH4+) in Beijing. The results show that during heavy pollution days (e.g., during 14-17 September 2015, with PM2.5 concentration over 100 mu g/m(3)), the concentrations of NO2 and 03 were high, with maxima of 90 and 240 mu g/m(3), respectively, providing high precursors for the formation of N2O5. In addition, the aerosol and sulfate concentrations were also high, with maxima of 201 mu g/m(3) and 23 mu g/m(3) respectively, providing reacting surface for the heterogeneous reaction. As a result, the hydrolysis of N2O5 led to 21.0% enhancement of nitrate (NO3-) and 7.5% enhancement of ammonium (NH4+). It is worth to note that this important effect only occurred in high pollution days (PM2.5-concentration over 100 mu g/m(3)). During low-pollution periods (PM2.5 concentration <100 mu g/m(3)), the effect of hydrolysis of N2O5 on the formation of nitrate and ammonium was insignificant (variation rate <5%). This study suggests that during heavy pollution periods, the hydrolysis of N2O5 enhances the level of aerosol pollution in Beijing, and needs to be further studied in order to perform-efficient air pollution control-and mitigation strategies. (C) 2016 Elsevier B.V. All rights reserved.
WOS关键词	MEXICO-CITY ; MCMA-2006/MILAGRO CAMPAIGN ; AEROSOL POLLUTION ; AIR-POLLUTION ; HEAVY HAZE ; IMPACTS ; VISIBILITY ; DEPOSITION ; OZONE ; PM2.5
WOS研究方向	Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000391897800022
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5556]
专题	地球环境研究所_粉尘与环境研究室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China 3.Paul Schemer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland 4.Natl Ctr Atmospher Res, Boulder, CO 80303 USA 5.Chinese Acad Sci, Ctr Excellence Urban Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 6.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess Quaternary Geol, Key Lab Aerosol Sci & Technol, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Su, Xing,Huang, Rujin,Feng, Tian,et al. Effect of hydrolysis of N2O5 on nitrate and ammonium formation in Beijing China: WRF-Chem model simulation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,579(2017):221-229.
APA	Su, Xing.,Huang, Rujin.,Feng, Tian.,Long, Xin.,Xu, Ruiguang.,...&Cao, Junji.(2017).Effect of hydrolysis of N2O5 on nitrate and ammonium formation in Beijing China: WRF-Chem model simulation.SCIENCE OF THE TOTAL ENVIRONMENT,579(2017),221-229.
MLA	Su, Xing,et al."Effect of hydrolysis of N2O5 on nitrate and ammonium formation in Beijing China: WRF-Chem model simulation".SCIENCE OF THE TOTAL ENVIRONMENT 579.2017(2017):221-229.