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Heterogeneous HONO formation deteriorates the wintertime particulate pollution in the Guanzhong Basin, China

文献类型：期刊论文

作者Li, Xia4,5; Bei, Naifang3; Wu, Jiarui5; Wang, Ruonan5; Liu, Suixin5; Liu, Lang5; Jiang, Qian5; Tie, Xuexi5; Molina, Luisa T.2; Li, Guohui1,5
刊名ENVIRONMENTAL POLLUTION
出版日期2022-06-15
卷号303页码:10
ISSN号0269-7491
关键词HONO Atmospheric oxidizing capacity Secondary aerosols Particulate pollution Guanzhong basin
DOI10.1016/j.envpol.2022.119157
通讯作者Li, Guohui(ligh@ieecas.cn)
英文摘要Despite implementation of strict emission mitigation measures since 2013, heavy haze with high levels of secondary aerosols still frequently engulfs the Guanzhong Basin (GZB), China, during wintertime, remarkably impairing visibility and potentially causing severe health issues. Although the observed low ozone (O3) concentrations do not facilitate the photochemical formation of secondary aerosols, the measured high nitrous acid (HONO) level provides an alternate pathway in the GZB. The impact of heterogeneous HONO sources on the wintertime particulate pollution and atmospheric oxidizing capability (AOC) is evaluated in the GZB. Simulations by the Weather Research and Forecast model coupled with Chemistry (WRF-Chem) reveal that the observed high levels of nitrate and secondary organic aerosols (SOA) are reproduced when both homogeneous and heterogeneous HONO sources are considered. The heterogeneous sources (HET-sources) contribute about 98% of the near-surface HONO concentration in the GZB, increasing the hydroxyl radical (OH) and O3 concentration by 39.4% and 22.0%, respectively. The average contribution of the HET-sources to SOA, nitrate, ammonium, and sulfate in the GZB is 35.6%, 20.6%, 12.1%, and 6.0% during the particulate pollution episode, respectively, enhancing the mass concentration of fine particulate matters (PM2.5) by around 12.2%. Our results suggest that decreasing HONO level or the AOC becomes an effective pathway to alleviate the wintertime particulate pollution in the GZB.
WOS关键词NITROUS-ACID HONO ; SECONDARY ORGANIC AEROSOL ; MEXICO-CITY ; ATMOSPHERIC CHEMISTRY ; AIR-POLLUTION ; HAZE DAYS ; WRF-CHEM ; IMPACTS ; EMISSIONS ; MODEL
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB40030203]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000782592500004
资助机构Strategic Priority Research Program of Chinese Academy of Sciences
源URL[http://ir.ieecas.cn/handle/361006/17678]  
专题地球环境研究所_粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Li, Guohui
作者单位1.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
2.Molina Ctr Energy & Environm, La Jolla, CA 92037 USA
3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, SKLLQG, Xian 710061, Peoples R China
推荐引用方式
GB/T 7714		 Li, Xia,Bei, Naifang,Wu, Jiarui,et al. Heterogeneous HONO formation deteriorates the wintertime particulate pollution in the Guanzhong Basin, China[J]. ENVIRONMENTAL POLLUTION,2022,303:10.
APA Li, Xia.,Bei, Naifang.,Wu, Jiarui.,Wang, Ruonan.,Liu, Suixin.,...&Li, Guohui.(2022).Heterogeneous HONO formation deteriorates the wintertime particulate pollution in the Guanzhong Basin, China.ENVIRONMENTAL POLLUTION,303,10.
MLA Li, Xia,et al."Heterogeneous HONO formation deteriorates the wintertime particulate pollution in the Guanzhong Basin, China".ENVIRONMENTAL POLLUTION 303(2022):10.

入库方式： OAI收割

来源：地球环境研究所

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