Important contribution of N2O5 hydrolysis to the daytime nitrate in Xi' an, China during haze periods: Isotopic analysis and WRF-Chem model simulation

doi:10.1016/j.envpol.2021.117712

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Important contribution of N2O5 hydrolysis to the daytime nitrate in Xi' an, China during haze periods: Isotopic analysis and WRF-Chem model simulation
	Wu, Can 1; Liu, Lang 2,3; Wang, Gehui 1,4; Zhang, Si 1; Li, Guohui 2; Lv, Shaojun 1; Li, Jianjun 2; Wang, Fanglin 1; Meng, Jingjing 5; Zeng, Ying 1
刊名	ENVIRONMENTAL POLLUTION
	2021-11-01
卷号	288 页码:8
关键词	Nitrate NO2 andO(3) Aerosol liquid water content (ALWC) PM2.5 Ammonia
ISSN号	0269-7491
DOI	10.1016/j.envpol.2021.117712
通讯作者	Wang, Gehui(ghwang@geo.ecnu.edu.cn)
英文摘要	Nitrate, as one of the major components of tropospheric aerosols, plays a crucial role in winter haze formation. While, the formation mechanism of the high production of nitrate in Chinese megacities is still not fully understood. To quantify the contributions of major formation pathways to nitrate, airborne particles in Xi'an, inland China during the winter of 2017 were measured and analyzed for the water-soluble ions and stable nitrogen/oxygen isotope compositions of nitrate in PM2.5, followed by a WRF-Chem model simulation. The oxygen isotopic results indicated that N2O5 hydrolysis was an important formation pathway for the daytime nitrate in the haze episodes. The model simulation further revealed that N2O5 hydrolysis contribution increased from 8.2% to 20.5% of the total nitrate over 14:00-16:00 p.m., clearly showing that N2O5 formation followed by a heterogeneous hydrolysis to nitrate can effectively proceed in daytime under the abundantly co-existing O-3, NO2 and NH3 conditions.
资助项目	National Key R&D Plan, Ministry of Science and Technology of China (Mechanism and chemical process characterization of atmospheric particulate matter multi-isotope fractionation)[2017YFC0212703] ; National Natural Science Foundation of China[41773117] ; National Natural Science Foundation of China[41325014] ; Institute of Eco-Chongming ; ECNU Happiness Flower
WOS关键词	PARTICLE LIQUID WATER ; NITROGEN DEPOSITION ; GLOBAL-MODEL ; INLAND CHINA ; AIR-QUALITY ; OXYGEN ; NOX ; POLLUTION ; PM2.5 ; ENHANCEMENT
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000696782200003
资助机构	National Key R&D Plan, Ministry of Science and Technology of China (Mechanism and chemical process characterization of atmospheric particulate matter multi-isotope fractionation) ; National Natural Science Foundation of China ; Institute of Eco-Chongming ; ECNU Happiness Flower
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17004]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Wang, Gehui
作者单位	1.East China Normal Univ, Sch Geog Sci, Key Lab Geog Informat Sci, Minist Educ, Shanghai 210062, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 3.Northwestern Polytech Univ, Sch Publ Policy & Adm, Xian 710061, Peoples R China 4.Inst Ecochongming, 3663 North Zhongshan Rd, Shanghai 200062, Peoples R China 5.Liaocheng Univ, Sch Environm & Planning, Liaocheng 252000, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Wu, Can,Liu, Lang,Wang, Gehui,et al. Important contribution of N2O5 hydrolysis to the daytime nitrate in Xi' an, China during haze periods: Isotopic analysis and WRF-Chem model simulation[J]. ENVIRONMENTAL POLLUTION,2021,288:8.
APA	Wu, Can.,Liu, Lang.,Wang, Gehui.,Zhang, Si.,Li, Guohui.,...&Zeng, Ying.(2021).Important contribution of N2O5 hydrolysis to the daytime nitrate in Xi' an, China during haze periods: Isotopic analysis and WRF-Chem model simulation.ENVIRONMENTAL POLLUTION,288,8.
MLA	Wu, Can,et al."Important contribution of N2O5 hydrolysis to the daytime nitrate in Xi' an, China during haze periods: Isotopic analysis and WRF-Chem model simulation".ENVIRONMENTAL POLLUTION 288(2021):8.