Evaluating the effectiveness of joint emission control policies on the reduction. of ambient VOCs: Implications from observation during the 2014 APEC summit in suburban Beijing

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	Evaluating the effectiveness of joint emission control policies on the reduction. of ambient VOCs: Implications from observation during the 2014 APEC summit in suburban Beijing
	Li, Kun 1,2; Li, Junling 1,2; Wang, Weigang 1,2; Tong, Shengrui 1,2; Liggio, John 3; Ge, Maofa 1,2,4
刊名	ATMOSPHERIC ENVIRONMENT
	2017-09-01
卷号	164 页码:117-127
关键词	Volatile Organic Compounds Asia-pacific Economic Cooperation Emission Control Proton Transfer Reaction-mass Spectrometry Positive Matrix Factorization
英文摘要	Ambient volatile organic compounds (VOCs) at a suburban Beijing site were on-line detected using proton transfer reaction-mass spectrometry (PTR-MS) during autumn of 2014, near the location of the Asia-Pacific Economic Cooperation (APEC) summit. During the APEC summit, the Chinese government enacted strict emission control policies. It was found that VOC concentrations only slightly decreased during the first emission control period (EC I), when control policies were performed in Beijing and 5 cities along the Tai-hang Mountains. However, most of the VOCs (10 out of 12 non-biogenic species) significantly decreased (more than 40%) during the second emission control period (EC II), when control policies were carried out in 16 cities including Beijing, Tianjin, 8 cities of Hebei province and 6 cities of Shandong province. Also the ratio of toluene and benzene decreased during EC II, likely because the emission control policies changed the proportions of different anthropogenic sources. Using the positive matrix factorization (PMF) source apportionment method, five factors are analyzed: (1) vehicle + fuel, (2) solvent, (3) biomass burning, (4) secondary, and (5) background + long-lived. Among them, vehicle + fuel, solvent and biomass burning contribute most of the VOCs concentrations (60%-80%) during the polluted periods and are affected most by emission control policies. During EC II, the reductions of vehicle + fuel, solvent, biomass burning and secondary species were all no less than 50%. Overall, when emission control policies were carried out in many North China Plain (NCP) cities (i.e. EC II), the VOC concentrations of suburban Beijing markedly decreased. This indicates the cross-regional joint-control policies have a large influence on reductions of organic gas species. The findings of this study have vital implications for helping formulate effective emission control policies in China and other countries. (C) 2017 Elsevier Ltd. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38963]
专题	化学研究所_分子动态与稳态结构实验室
作者单位	1.Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Environm & Climate Change Canada, Air Qual Res Div, Toronto, ON M3H 5T4, Canada 4.Chinese Acad Sci, Inst Urban Environm, CEUAE, Xiamen 361021, Peoples R China
推荐引用方式 GB/T 7714	Li, Kun,Li, Junling,Wang, Weigang,et al. Evaluating the effectiveness of joint emission control policies on the reduction. of ambient VOCs: Implications from observation during the 2014 APEC summit in suburban Beijing[J]. ATMOSPHERIC ENVIRONMENT,2017,164:117-127.
APA	Li, Kun,Li, Junling,Wang, Weigang,Tong, Shengrui,Liggio, John,&Ge, Maofa.(2017).Evaluating the effectiveness of joint emission control policies on the reduction. of ambient VOCs: Implications from observation during the 2014 APEC summit in suburban Beijing.ATMOSPHERIC ENVIRONMENT,164,117-127.
MLA	Li, Kun,et al."Evaluating the effectiveness of joint emission control policies on the reduction. of ambient VOCs: Implications from observation during the 2014 APEC summit in suburban Beijing".ATMOSPHERIC ENVIRONMENT 164(2017):117-127.