气候变化领域集成服务门户(CCPortal): Seasonality of nitrous acid near an industry zone in the Yangtze River Delta region of China: Formation mechanisms and contribution to the atmospheric oxidation capacity

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DOI	10.1016/j.atmosenv.2021.118420
	Seasonality of nitrous acid near an industry zone in the Yangtze River Delta region of China: Formation mechanisms and contribution to the atmospheric oxidation capacity
	Ge Y.; Shi X.; Ma Y.; Zhang W.; Ren X.; Zheng J.; Zhang Y.
发表日期	2021
ISSN	1352-2310
卷号	254
英文摘要	HONO along with other trace gases and actinic flux were continuously measured in selected months from December 2015 to November 2016 near a major industrial zone of the Yangtze River Delta (YRD) region of China. The seasonalities of HONO and its formation mechanisms were explored. A box model was developed to assess the role of HONO chemistry in the atmospheric oxidative capacity in the study area. The model was constrained by in-situ observations to minimize simulation uncertainties. Our measurement results demonstrate that HONO mean concentration and diurnal profile varied noticeably between different seasons with the maximum (1.32 ± 0.92 ppbv) observed in winter, coincided with high mass loading of fine particles (PM2.5 = 114 ± 59.6 μg m−3). The averaged nighttime NO2 to HONO conversion ratios (hr−1) were (1.83 ± 0.73)% in spring, (2.91 ± 1.06)% in summer, (0.72 ± 0.44)% in autumn, and (0.84 ± 0.45)% in winter. The homogeneous reaction of OH + NO was responsible for a large portion of HONO production throughout the year but was relatively weaker compared to other mechanisms in winter. Heterogeneous reactions on ground surfaces were much stronger than those on aerosol surfaces, dominating nighttime HONO production, except in summer. Primary HONO emissions were only responsible for a small portion of the HONO budget. Particulate nitrate photolysis was a significant source of HONO and it showed very little variation in different seasons. OH budget analysis shows that O3 photolysis was a major contributor to the OH production in the study area while HONO photolysis provided an extra boost to the photochemical reactivity in the early morning, particularly during summer. However, HONO chemistry played a more important role in autumn and winter by dominating OH production throughout the day. Accordingly, effective control of NOx emissions dominated by industries can significantly reduce HONO production and thus weaken the atmospheric oxidative capacity in the study area. © 2021 The Author(s)
关键词	Atmospheric oxidation capacity Heterogeneous reactions Hydroxyl radical Nitrous acid Seasonal variation
语种	英语
scopus关键词	Atmospheric chemistry; Budget control; Inorganic acids; Nitrogen oxides; Surface reactions; Atmospheric oxidation capacity; Formation mechanism; Heterogeneous reactions; Hydroxyl radicals; Nitrous acid; Oxidative capacity; Seasonal variation; Seasonality; Study areas; Yangtze river delta; Photolysis; ammonia; carbon monoxide; hydroxyl radical; n [1 naphthyl]ethylenediamine; nitrate; nitrogen oxide; nitrous acid; ozone; sulfanilamide derivative; sulfur dioxide; unclassified drug; volatile organic compound; actinic flux; atmospheric chemistry; concentration (composition); formation mechanism; in situ measurement; industrial emission; nitrous acid; oxidation; photolysis; seasonality; air pollution; Article; atmospheric oxidation capacity; autumn; China; circadian rhythm; industry; oxidation; particulate matter 2.5; photolysis; priority journal; seasonal variation; simulation; spring; summer; winter; China; Yangtze Basin
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248431
作者单位	School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China; NUIST Reading Academy, Nanjing University of Information Science & Technology, Nanjing, 210044, China; Air Resources Laboratory, National Oceanic and Atmospheric Administration, College Park, MD, United States
推荐引用方式 GB/T 7714	Ge Y.,Shi X.,Ma Y.,et al. Seasonality of nitrous acid near an industry zone in the Yangtze River Delta region of China: Formation mechanisms and contribution to the atmospheric oxidation capacity[J],2021,254.
APA	Ge Y..,Shi X..,Ma Y..,Zhang W..,Ren X..,...&Zhang Y..(2021).Seasonality of nitrous acid near an industry zone in the Yangtze River Delta region of China: Formation mechanisms and contribution to the atmospheric oxidation capacity.ATMOSPHERIC ENVIRONMENT,254.
MLA	Ge Y.,et al."Seasonality of nitrous acid near an industry zone in the Yangtze River Delta region of China: Formation mechanisms and contribution to the atmospheric oxidation capacity".ATMOSPHERIC ENVIRONMENT 254(2021).