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Effect of hydrolysis of N2O5 on nitrate and ammonium formation in Beijing China: WRF-Chem model simulation
Su, Xing1,2; Tie, Xuexi1,3,4; Li, Guohui1; Cao, Junji1; Huang, Rujin1,5; Feng, Tian1,6; Long, Xin1; Xu, Ruiguang1,2
2017-02-01
发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
卷号579期号:2017页码:221-229
文章类型Article
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.
关键词Hydrolysis Of N2o5 Nitrate And Ammonium Beijing Wrf-chem
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.scitotenv.2016.11.125
关键词[WOS]MEXICO-CITY ; MCMA-2006/MILAGRO CAMPAIGN ; AEROSOL POLLUTION ; AIR-POLLUTION ; HEAVY HAZE ; IMPACTS ; VISIBILITY ; DEPOSITION ; OZONE ; PM2.5
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology
WOS类目Environmental Sciences
WOS记录号WOS:000391897800022
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5556
专题粉尘与环境研究室
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess Quaternary Geol, Key Lab Aerosol Sci & Technol, Xian 710061, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Urban Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
4.Natl Ctr Atmospher Res, Boulder, CO 80303 USA
5.Paul Schemer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland
6.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
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Su, Xing,Tie, Xuexi,Li, Guohui,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.,Tie, Xuexi.,Li, Guohui.,Cao, Junji.,Huang, Rujin.,...&Xu, Ruiguang.(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.
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