气候变化领域集成服务门户(CCPortal): Observations of glyoxal and methylglyoxal in a suburban area of the Yangtze River Delta, China

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DOI	10.1016/j.atmosenv.2020.117727
	Observations of glyoxal and methylglyoxal in a suburban area of the Yangtze River Delta, China
	Liu J.; Li X.; Li D.; Xu R.; Gao Y.; Chen S.; Liu Y.; Zhao G.; Wang H.; Wang H.; Lou S.; Chen M.; Hu J.; Lu K.; Wu Z.; Hu M.; Zeng L.; Zhang Y.
发表日期	2020
ISSN	1352-2310
卷号	238
英文摘要	Glyoxal (GLY) and methylglyoxal (MGLY), as tracers of oxidation of volatile organic compounds (VOCs), play an important role in atmospheric chemistry. In this work, the concentrations of these two aldehydes were simultaneously measured online at a regional site in Jiangsu Province (China) during the 2018 EXPLORE-YRD campaign. The maximum measured concentration of GLY and MGLY was 0.47 and 6.68 ppb, respectively. As the campaign site was surrounded by farmland and the observations were recorded during harvest, significant enhancements to the concentration of GLY and MGLY were found owing to agricultural biomass burning. While the enhancement of MGLY relative to CO (0.0059 ± 0.0012) was found to be consistent with previous study, the corresponding enhancement ratios of GLY were lower (0.0003 ± 0.0001). The possibility of using the ratios between formaldehyde (HCHO), GLY, and MGLY concentrations as indicators of reactive VOC composition was investigated. Based on measured data and model simulation results, we found that the MGLY to HCHO ratio was sensitive to VOC precursors and reasonably well correlated with the reactivity of aromatics. © 2020 Elsevier Ltd
关键词	Biomass burning Glyoxal Methylglyoxal Reactive VOC composition
语种	英语
scopus关键词	Agricultural robots; Volatile organic compounds; Agricultural biomass; Enhancement ratios; Glyoxal; Jiangsu province; Methylglyoxal; Model simulation; Suburban areas; Yangtze river delta; Atmospheric chemistry; formaldehyde; glyoxal; methylglyoxal; volatile organic compound; atmospheric chemistry; biomass burning; chemical compound; environmental indicator; suburban area; tracer; volatile organic compound; agricultural land; agricultural procedures; air analysis; Article; biomass burning; chemical composition; China; circadian rhythm; combustion; concentration (parameter); harvest; photolysis; priority journal; suburban area; China; Jiangsu; Yangtze River
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/249040
作者单位	State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; International Joint Laboratory for Regional Pollution Control, Ministry of Education, Beijing, 100816, China; Collaborative Innovation Centre of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing, 210044, China; State Environmental Protection Key Laboratory of Formation and Prevention of the Urban Air Pollution Complex, Shanghai Academy of Environmental Sciences, Shanghai, 200233, China; School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China; Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, 100871, China
推荐引用方式 GB/T 7714	Liu J.,Li X.,Li D.,et al. Observations of glyoxal and methylglyoxal in a suburban area of the Yangtze River Delta, China[J],2020,238.
APA	Liu J..,Li X..,Li D..,Xu R..,Gao Y..,...&Zhang Y..(2020).Observations of glyoxal and methylglyoxal in a suburban area of the Yangtze River Delta, China.ATMOSPHERIC ENVIRONMENT,238.
MLA	Liu J.,et al."Observations of glyoxal and methylglyoxal in a suburban area of the Yangtze River Delta, China".ATMOSPHERIC ENVIRONMENT 238(2020).