globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.atmosres.2018.05.005
Scopus记录号: 2-s2.0-85047241374
论文题名:
Characterizing the level, photochemical reactivity, emission, and source contribution of the volatile organic compounds based on PTR-TOF-MS during winter haze period in Beijing, China
作者: Sheng J.; Zhao D.; Ding D.; Li X.; Huang M.; Gao Y.; Quan J.; Zhang Q.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 212
起始页码: 54
结束页码: 63
语种: 英语
英文关键词: Emission ; Haze ; Reactivity ; VOCs ; Winter
Scopus关键词: Acetone ; Formaldehyde ; Mass spectrometers ; Mixing ; Neutron emission ; Proton transfer ; Reactivity (nuclear) ; Styrene ; Volatile organic compounds ; Anthropogenic emissions ; Haze ; Photochemical process ; Photochemical reactivity ; Proton transfer reactions ; Secondary organic aerosols ; Time-of-flight mass spectrometers ; Winter ; Inductively coupled plasma ; aerosol ; anthropogenic source ; atmospheric chemistry ; emission ; haze ; mass spectrometry ; mixing ratio ; photochemistry ; volatile organic compound ; winter ; Beijing [Beijing (ADS)] ; Beijing [China] ; China
英文摘要: The atmospheric volatile organic compounds (VOCs) are the key participators in the formation of secondary organic aerosol and other atmospheric photochemical processes. However, it is still far from clear understanding of the VOCs in Northern China. In this study, VOCs were measured using a proton transfer reaction-time of flight-mass spectrometer (PTR-TOF-MS) in the downtown area of Beijing during a winter haze period in December 2016. The average mixing ratios of VOCs on the haze days were (ppb): methanol (51.75), formaldehyde (41.65), acetaldehyde (15.81), acetone (7.92), C8-aromatics (7.35), toluene (6.11), benzene (4.30), MEK (2.53), acetonitrile (2.05), C9-aromatics (1.54), benzaldehyde (1.12), isoprene (1.00), styrene (0.62). These concentrations represented the largest values among the cities around the world. VOC concentrations varied dramatically, with the largest value mainly appeared on days having the weakest diffusion condition. Due to the different solar radiation in this period, the photochemical reactivity of the VOCs showed the minimum and maximum values on haze and clear days, respectively. The primary anthropogenic emissions contributed more than half of the mixing ratios of most VOCs. However, formaldehyde received 56.6% contribution from the secondary or biogenic sources, and this contribution mainly increased at the noon hours when sunlight was stronger. © 2018
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108815
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Beijing Weather Modification Office, Beijing, China; Institute of Urban Meteorology, Chinese Meteorological Administration, Beijing, China; Beijing Key Laboratory of Cloud, Precipitation, and Atmospheric Water Resources, Beijing, China; Beijing Cloud Laboratory and Observational Utilities Deployment Base, Beijing, China; Weather Modification Center, Chinese Meteorological Administration, Beijing, China

Recommended Citation:
Sheng J.,Zhao D.,Ding D.,et al. Characterizing the level, photochemical reactivity, emission, and source contribution of the volatile organic compounds based on PTR-TOF-MS during winter haze period in Beijing, China[J]. Atmospheric Research,2018-01-01,212
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