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Heterogeneous HONO formation deteriorates the wintertime particulate pollution in the Guanzhong Basin, China
Li, Xia1,2; Bei, Naifang3; Wu, Jiarui1; Wang, Ruonan1; Liu, Suixin1; Liu, Lang1; Jiang, Qian1; Tie, Xuexi1; Molina, Luisa T.4; Li, Guohui1,5
Corresponding AuthorLi, Guohui(ligh@ieecas.cn)
2022-06-15
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
Volume303Pages:10
AbstractDespite 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.
KeywordHONO Atmospheric oxidizing capacity Secondary aerosols Particulate pollution Guanzhong basin
DOI10.1016/j.envpol.2022.119157
WOS KeywordNITROUS-ACID HONO ; SECONDARY ORGANIC AEROSOL ; MEXICO-CITY ; ATMOSPHERIC CHEMISTRY ; AIR-POLLUTION ; HAZE DAYS ; WRF-CHEM ; IMPACTS ; EMISSIONS ; MODEL
Indexed BySCI ; SCI
Language英语
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDB40030203]
WOS Research AreaEnvironmental Sciences & Ecology
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences
WOS SubjectEnvironmental Sciences
WOS IDWOS:000782592500004
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/361006/17679
Collection粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
Corresponding AuthorLi, Guohui
Affiliation1.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
Recommended Citation
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.
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