Characteristics of wintertime VOCs in suburban and urban Beijing: concentrations, emission ratios, and festival effects

doi:10.5194/acp-19-8021-2019

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Characteristics of wintertime VOCs in suburban and urban Beijing: concentrations, emission ratios, and festival effects
	Li, Kun 1,2,5; Li, Junling 1,5; Tong, Shengrui 1,5; Wang, Weigang 1,5; Huang, Ru-Jin 3; Ge, Maofa 1,4,5
刊名	ATMOSPHERIC CHEMISTRY AND PHYSICS
	2019-06-19
卷号	19 期号:12 页码:8021-8036
ISSN号	1680-7316
DOI	10.5194/acp-19-8021-2019
通讯作者	Ge, Maofa(gemaofa@iccas.ac.cn)
英文摘要	Measurements of volatile organic compounds (VOCs) were performed at a suburban site and an urban site in Beijing during the winter of 2014-2015. The VOC concentrations and emission ratios (ERs) to CO were compared at these two sites. It is found that though the VOC concentrations at the urban site are 2.67 +/- 1.15 times of those at the suburban site, the ERs are similar (within a factor of 1.5). It is indicated that (1) the VOCs at suburban areas are mainly from the transportation from the urban areas and (2) the ERs measured at the urban areas are also valid for the surrounding suburban areas. By comparing the diurnal variations and the contribution of anthropogenic emissions at both sites, we find that the photochemical processes are very active at the urban site, and these processes play an important role in the daytime oxygenated VOC (OVOC) formation. The methanol at the urban site and the formic acid at the suburban site probably have additional sources, which are attributed to be solvent use and soil/agriculture, respectively. The festival effects from the Chinese New Year (CNY) were investigated. The VOC concentrations decreased similar to 60 % during CNY holidays, probably due to the population migration during festival holidays. In addition, fireworks are found to be an important source of acetonitrile, aromatics, and some OVOCs during the CNY festival and should be controlled more strictly. This study provides key characteristics of wintertime VOCs in suburban and urban Beijing and has implications for better understanding the atmospheric chemistry of VOCs in and around this megacity.
资助项目	National Key Research and Development Program of China[2016YFC0202202] ; National Key Research and Development Program of China[2017YFC0212701] ; National Natural Science Foundation of China[91544227] ; National Natural Science Foundation of China[21477134] ; National Natural Science Foundation of China[91644219]
WOS关键词	VOLATILE ORGANIC-COMPOUNDS ; SECONDARY SOURCES ; AEROSOL COMPOSITION ; FINE PARTICULATE ; MIXING RATIOS ; HAZE EVENTS ; MEXICO-CITY ; PTR-MS ; FIREWORKS ; PHASE
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000472156200001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13815]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Ge, Maofa
作者单位	1.Chinese Acad Sci, BNLMS, State Key Lab Struct Chem Unstable & Stable Speci, CAS Res Educ Ctr Excellence Mol Sci,Inst Chem, Beijing 100190, Peoples R China 2.Environm & Climate Change Canada, Air Qual Res Div, Toronto, ON M3H 5T4, Canada 3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Fujian, Peoples R China 5.Univ Chinese Acad Sci, Sch Chem Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Kun,Li, Junling,Tong, Shengrui,et al. Characteristics of wintertime VOCs in suburban and urban Beijing: concentrations, emission ratios, and festival effects[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(12):8021-8036.
APA	Li, Kun,Li, Junling,Tong, Shengrui,Wang, Weigang,Huang, Ru-Jin,&Ge, Maofa.(2019).Characteristics of wintertime VOCs in suburban and urban Beijing: concentrations, emission ratios, and festival effects.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(12),8021-8036.
MLA	Li, Kun,et al."Characteristics of wintertime VOCs in suburban and urban Beijing: concentrations, emission ratios, and festival effects".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.12(2019):8021-8036.