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

doi:10.1016/j.envpol.2022.119157

IEECAS OpenIR > 粉尘与环境研究室

	Heterogeneous HONO formation deteriorates the wintertime particulate pollution in the Guanzhong Basin, China
	Li, Xia 1,2; Bei, Naifang 3; Wu, Jiarui 1; Wang, Ruonan 1; Liu, Suixin 1; Liu, Lang 1; Jiang, Qian 1; Tie, Xuexi 1; Molina, Luisa T.4; Li, Guohui 1,5
通讯作者	Li, Guohui(ligh@ieecas.cn)
	2022-06-15
发表期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
卷号	303 页码:10
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.
关键词	HONO Atmospheric oxidizing capacity Secondary aerosols Particulate pollution Guanzhong basin
DOI	10.1016/j.envpol.2022.119157
关键词[WOS]	NITROUS-ACID HONO ; SECONDARY ORGANIC AEROSOL ; MEXICO-CITY ; ATMOSPHERIC CHEMISTRY ; AIR-POLLUTION ; HAZE DAYS ; WRF-CHEM ; IMPACTS ; EMISSIONS ; MODEL
收录类别	SCI ; SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB40030203]
WOS研究方向	Environmental Sciences & Ecology
项目资助者	Strategic Priority Research Program of Chinese Academy of Sciences
WOS类目	Environmental Sciences
WOS记录号	WOS:000782592500004
出版者	ELSEVIER SCI LTD
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/17679
专题	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.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, SKLLQG, Xian 710061, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China 4.Molina Ctr Energy & Environm, La Jolla, CA 92037 USA 5.CAS Ctr Excellence Quaternary Sci & Global Change, 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.