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Important contribution of N2O5 hydrolysis to the daytime nitrate in Xi' an, China during haze periods: Isotopic analysis and WRF-Chem model simulation
Wu, Can1; Liu, Lang2,3; Wang, Gehui1,4; Zhang, Si1; Li, Guohui2; Lv, Shaojun1; Li, Jianjun2; Wang, Fanglin1; Meng, Jingjing5; Zeng, Ying1
Corresponding AuthorWang, Gehui(ghwang@geo.ecnu.edu.cn)
2021-11-01
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
Volume288Pages:8
AbstractNitrate, 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.
KeywordNitrate NO2 andO(3) Aerosol liquid water content (ALWC) PM2.5 Ammonia
DOI10.1016/j.envpol.2021.117712
WOS KeywordPARTICLE LIQUID WATER ; NITROGEN DEPOSITION ; GLOBAL-MODEL ; INLAND CHINA ; AIR-QUALITY ; OXYGEN ; NOX ; POLLUTION ; PM2.5 ; ENHANCEMENT
Indexed BySCI ; SCI
Language英语
Funding ProjectNational 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 Research AreaEnvironmental Sciences & Ecology
Funding OrganizationNational 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
WOS SubjectEnvironmental Sciences
WOS IDWOS:000696782200003
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/17005
Collection粉尘与环境研究室
Corresponding AuthorWang, Gehui
Affiliation1.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
Recommended Citation
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.
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