globalchange  > 气候变化与战略
DOI: 10.1016/j.atmosenv.2019.117114
论文题名:
Measurement of gaseous and particulate formaldehyde in the Yangtze River Delta, China
作者: Xu R.; Li X.; Dong H.; Wu Z.; Chen S.; Fang X.; Gao J.; Guo S.; Hu M.; Li D.; Liu Y.; Liu Y.; Lou S.; Lu K.; Meng X.; Wang H.; Zeng L.; Zong T.; Hu J.; Chen M.; Shao M.; Zhang Y.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 224
语种: 英语
英文关键词: Acetonitrile ; Aerosols ; Atmospheric humidity ; Biomass ; Formaldehyde ; Free radical reactions ; Photochemical reactions ; Reaction intermediates ; Biomass-burning ; HCHO ; High relative humidities ; Intermediate product ; Liquid state ; Secondary production ; Uptake ; Uptake coefficients ; Particles (particulate matter) ; acetonitrile ; formaldehyde ; aerosol ; biomass burning ; concentration (composition) ; detection method ; measurement method ; ozone ; aerosol ; airflow ; biomass ; China ; gas ; particulate matter ; plume ; priority journal ; river ; season ; temperature ; China ; Yangtze River
学科: Biomass burning ; HCHO ; Liquid state ; Particle ; Uptake ; YRD
中文摘要: Formaldehyde (HCHO) is one of the most important intermediate products of atmospheric photochemical reactions and is also a radical source that promotes ozone formation. Given its high solubility, HCHO is likely to exist in particulate form. In this work, gaseous HCHO (HCHOg) and particulate HCHO (HCHOp) were separated and collected by a rotating wet annular denude (RWAD) and an aerosol growth chamber–coil aerosol cooler (AC). The collected HCHO from the RWAD and AC are measured by two online Hantzsch method-based formaldehyde analyzers. The comprehensive campaign was held in the Yangtze River Delta of China from 15 May to 18 June 2018, which is during the harvest season. Several biomass burning events were identified by using acetonitrile as a tracer. During the period influenced by biomass burning, the mixing ratios of HCHOg and HCHOp were respectively 122% and 231% higher than those during other time periods. The enhancement ratio of HCHOg to acetonitrile obtained from this work generally agrees with those from the existing literature. Biomass burning contributed 14.8% to HCHOg, but the abundant freshly discharged precursors it emitted greatly promoted the secondary production of HCHOg. We suggest that the high concentration of HCHOp during the biomass burning period was from uptake of HCHOg by aerosols during their transportation; the liquid state particles are conducive to HCHOg uptake. High relative humidity, a low particle rebound fraction f, as well as low temperatures may result in higher uptake coefficient values. © 2019 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160949
Appears in Collections:气候变化与战略

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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; Collaborative Innovation Centre of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing, 210044, China; International Joint Laboratory for Regional Pollution Control, Ministry of Education, Beijing, 100816, 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; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China

Recommended Citation:
Xu R.,Li X.,Dong H.,et al. Measurement of gaseous and particulate formaldehyde in the Yangtze River Delta, China[J]. Atmospheric Environment,2020-01-01,224
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