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

doi:10.1016/j.envpol.2022.119157

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

	Heterogeneous HONO formation deteriorates the wintertime particulate pollution in the Guanzhong Basin, China
	Li, Xia 4,5; Bei, Naifang 3; Wu, Jiarui 5; Wang, Ruonan 5; Liu, Suixin 5; Liu, Lang 5; Jiang, Qian 5; Tie, Xuexi 5; Molina, Luisa T.2; Li, Guohui 1,5
刊名	ENVIRONMENTAL POLLUTION
	2022-06-15
卷号	303 页码:10
关键词	HONO Atmospheric oxidizing capacity Secondary aerosols Particulate pollution Guanzhong basin
ISSN号	0269-7491
DOI	10.1016/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.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB40030203]
WOS关键词	NITROUS-ACID HONO ; SECONDARY ORGANIC AEROSOL ; MEXICO-CITY ; ATMOSPHERIC CHEMISTRY ; AIR-POLLUTION ; HAZE DAYS ; WRF-CHEM ; IMPACTS ; EMISSIONS ; MODEL
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
内容类型	期刊论文
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
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.