| 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 Author | Wang, Gehui(ghwang@geo.ecnu.edu.cn) |
| 2021-11-01 | |
| Source Publication | ENVIRONMENTAL POLLUTION
 |
| ISSN | 0269-7491 |
| Volume | 288Pages:8 |
| Abstract | 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. |
| Keyword | Nitrate NO2 andO(3) Aerosol liquid water content (ALWC) PM2.5 Ammonia |
| DOI | 10.1016/j.envpol.2021.117712 |
| WOS Keyword | PARTICLE LIQUID WATER ; NITROGEN DEPOSITION ; GLOBAL-MODEL ; INLAND CHINA ; AIR-QUALITY ; OXYGEN ; NOX ; POLLUTION ; PM2.5 ; ENHANCEMENT |
| Indexed By | SCI ; SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Environmental Sciences & Ecology |
| Funding Organization | 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 |
| WOS Subject | Environmental Sciences |
| WOS ID | WOS:000696782200003 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ieecas.cn/handle/361006/17005 |
| Collection | 粉尘与环境研究室 |
| Corresponding Author | Wang, Gehui |
| Affiliation | 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 |
| 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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