Characterization of VOCs and their related atmospheric processes in a central Chinese city during severe ozone pollution periods
Li, Bowei1; Ho, Steven Sai Hang3,4; Gong, Sunling1,2; Ni, Jingwei1; Li, Huairui1; Han, Liyan1; Yang, Yi1; Qi, Yijin1; Zhao, Dongxu1
刊名ATMOSPHERIC CHEMISTRY AND PHYSICS
2019-01-16
卷号19期号:1页码:617-638
ISSN号1680-7316
DOI10.5194/acp-19-617-2019
通讯作者Ho, Steven Sai Hang(stevenho@hkpsrl.org) ; Gong, Sunling(gongsl@cma.gov.cn)
英文摘要A 5-month campaign (from May to September 2017) was conducted to characterize volatile organic compounds (VOCs) for the first time at four sites in Zhengzhou, Henan Province, China, where ground level ozone (O-3) concentration has shown an increasing trend in recent years. Canister samples were collected for the measurement of 57 VOCs, which, along with reactive nitrogen oxides (NOx), are the most important O-3 precursors. During the same period, O-3 and its precursor gases were monitored online simultaneously. The results indicated that the average mixing ratio of total quantified VOCs (Sigma(VOCs) = 28.8 +/- 22.1 ppbv) in Zhengzhou was lower than that in the other Chinese megacities, while alkyne comprised a higher proportion of Sigma(VOCs). The abundances, compositions and ratios of typical VOCs showed clear spatial and temporal variations. Cluster analysis indicates that air masses from the south of Zhengzhou were cleaner than from other directions. The molar ratio of VOCs to NOx indicated that, in general, O-3 formation was more sensitive to VOCs than NOx formation in Zhengzhou. The source apportionment was conducted with positive matrix factorization (PMF), and it was found that vehicle exhaust, coal and biomass burning and solvent usage were the major sources for ambient VOCs at all four sites. From potential source contribution function (PSCF) analysis, the strong emissions from coal + biomass burning and solvent usage were concentrated in the southwest of Shanxi and Henan provinces. This study gathers scientific evidence on the pollution sources for Zhengzhou, benefiting the government to establish efficient environmental control measures, particularly for O-3 pollution.
资助项目Key Program of National Natural Science Foundation of China[91744209] ; Key Program of National Natural Science Foundation of China[91544232]
WOS关键词VOLATILE ORGANIC-COMPOUNDS ; PEARL RIVER-DELTA ; HYDROCARBON SOURCE APPORTIONMENT ; GROUND-LEVEL OZONE ; NONMETHANE HYDROCARBONS ; INDUSTRIAL-AREA ; EMISSION INVENTORIES ; ROADSIDE ENVIRONMENT ; CHEMICAL-COMPOSITION ; SEASONAL-VARIATIONS
WOS研究方向Meteorology & Atmospheric Sciences
语种英语
出版者COPERNICUS GESELLSCHAFT MBH
WOS记录号WOS:000456028700003
资助机构Key Program of National Natural Science Foundation of China
内容类型期刊论文
源URL[http://ir.ieecas.cn/handle/361006/14386]  
专题地球环境研究所_黄土与第四纪地质国家重点实验室(2010~)
通讯作者Ho, Steven Sai Hang; Gong, Sunling
作者单位1.Langfang Acad Eco Ind Wisdom Environm, Langfang 065000, Peoples R China
2.Chinese Acad Meteorol Sci, CMA, Ctr Atmosphere Watch & Serv, Beijing 100081, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China
4.Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA
推荐引用方式
GB/T 7714
Li, Bowei,Ho, Steven Sai Hang,Gong, Sunling,et al. Characterization of VOCs and their related atmospheric processes in a central Chinese city during severe ozone pollution periods[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(1):617-638.
APA Li, Bowei.,Ho, Steven Sai Hang.,Gong, Sunling.,Ni, Jingwei.,Li, Huairui.,...&Zhao, Dongxu.(2019).Characterization of VOCs and their related atmospheric processes in a central Chinese city during severe ozone pollution periods.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(1),617-638.
MLA Li, Bowei,et al."Characterization of VOCs and their related atmospheric processes in a central Chinese city during severe ozone pollution periods".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.1(2019):617-638.
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