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Wintertime nitrate formation pathways in the north China plain: Importance of N2O5 heterogeneous hydrolysis

文献类型：期刊论文

作者Liu, Lang1,4; Bei, Naifang2; Hu, Bo3; Wu, Jiarui1,4; Liu, Suixin1,4; Li, Xia1,4; Wang, Ruonan1,4; Liu, Zirui3; Shen, Zhenxing2; Li, Guohui1,4
刊名ENVIRONMENTAL POLLUTION
出版日期2020-11-01
卷号266页码:10
ISSN号0269-7491
DOI10.1016/j.envpol.2020.115287
通讯作者Li, Guohui(ligh@ieecas.cn)
英文摘要Strict emission control measures have been implemented in the North China Plain (NCP) to improve air quality since 2013. However, heavy particulate matter (PM) pollution still frequently occurs in the region especially during wintertime, and the nitrate contribution to fine PM (PM2.5) has substantially increased in recent several years. Nitrate aerosols, which are formed via nitric acid (HNO3) to balance inorganic cations in the particle phase, have become a major fraction of PM2.5 during wintertime haze events in the NCP. HNO3 is mainly produced through homogeneous (NO2+OH, NO3+VOCs) and heterogeneous pathways (N2O5 heterogeneous hydrolysis) in the atmosphere, but the contribution of the two pathways to the nitrate formation remains elusive. In this study, the Weather Research and Forecasting model with Chemistry (WRF-Chem) was applied to simulate a heavy haze episode from 16 to December 31, 2016 in the North China Plain, and the source-oriented method (SOM) and brute force method (BFM) were both used to evaluate contributions of the heterogeneous pathway to the nitrate formation. The results demonstrated that the near-surface nitrate contributions of the heterogeneous pathway were about 30.8% based on the BFM, and 51.6% based on the SOM, indicating that the BFM might be subject to underestimating importance of the heterogeneous pathway to the nitrate formation. The SOM simulations further showed that the heterogeneous pathway dominated the nighttime HNO3 production in the planetary boundary layer, with an average contribution of 83.0%. Although N2O5 was photolytically liable during daytime, the heterogeneous N2O5 hydrolysis still contributed 10.1% of HNO3, which was caused by substantial attenuation of incident solar radiation by clouds and high PM2.5 mass loading. Our study highlighted the significantly important role of N2O5 heterogeneous hydrolysis in the nitrate formation during wintertime haze days. (C) 2020 Elsevier Ltd. All rights reserved.
WOS关键词WRF-CHEM MODEL ; SECONDARY ORGANIC AEROSOL ; PM10/PM2.5 AIR-QUALITY ; TIANJIN-HEBEI BTH ; SOURCE APPORTIONMENT ; ANTHROPOGENIC EMISSIONS ; PARTICULATE MATTER ; MEXICO-CITY ; REGIONAL-DISTRIBUTION ; NIGHTTIME CHEMISTRY
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB40030203] ; National Key R&D Plan (Quantitative Relationship and Regulation Principle) between Regional Oxidation Capacity of Atmospheric and Air Quality[2017YFCO210000] ; National Research Program for Key Issues in Air Pollution Control[DQGG0105]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000571665100003
出版者ELSEVIER SCI LTD
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; National Key R&D Plan (Quantitative Relationship and Regulation Principle) between Regional Oxidation Capacity of Atmospheric and Air Quality ; National Research Program for Key Issues in Air Pollution Control
源URL[http://ir.ieecas.cn/handle/361006/15332]  
专题中国科学院地球环境研究所
通讯作者Li, Guohui
作者单位1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
3.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China
4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Lang,Bei, Naifang,Hu, Bo,et al. Wintertime nitrate formation pathways in the north China plain: Importance of N2O5 heterogeneous hydrolysis[J]. ENVIRONMENTAL POLLUTION,2020,266:10.
APA Liu, Lang.,Bei, Naifang.,Hu, Bo.,Wu, Jiarui.,Liu, Suixin.,...&Li, Guohui.(2020).Wintertime nitrate formation pathways in the north China plain: Importance of N2O5 heterogeneous hydrolysis.ENVIRONMENTAL POLLUTION,266,10.
MLA Liu, Lang,et al."Wintertime nitrate formation pathways in the north China plain: Importance of N2O5 heterogeneous hydrolysis".ENVIRONMENTAL POLLUTION 266(2020):10.

入库方式： OAI收割

来源：地球环境研究所

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