Urban VOC profiles, possible sources, and its role in ozone formation for a summer campaign over Xi'an, China

doi:10.1007/s11356-019-05950-0

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

	Urban VOC profiles, possible sources, and its role in ozone formation for a summer campaign over Xi'an, China
	Sun, Jian 2,5; Shen, Zhenxing 2; Zhang, Yue 2; Zhang, Zhou 4; Zhang, Qian 2; Zhang, Tian 2; Niu, Xinyi 3; Huang, Yu 1; Cui, Long 1; Xu, Hongmei 2
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2019-09-01
卷号	26 期号:27 页码:27769-27782
关键词	VOC profiles OFP Temporal variation Source apportionment
ISSN号	0944-1344
DOI	10.1007/s11356-019-05950-0
通讯作者	Shen, Zhenxing(zxshen@mail.xjtu.edu.cn)
英文摘要	To insight the urban volatile organic compound (VOC) profiles and its contribution to ozone, four-time per day (8:00-9:00, 15:00-16:00, 19:00-20:00, and 23:00-24:00) off-line VOC samples were collected from 16th July to 28th July 2018 for a summer investigation campaign over Xi'an, China. The diurnal variation was significant that the lowest TVOC concentrations were observed in the midnight period (28.4 +/- 25.6 ppbv) while the highest was shown in the morning (49.6 +/- 40.1 ppbv). The differences of total non-methane VOCs (TVOCs) between weekdays and weekend were also significant that the weekend showed significantly high VOC levels than weekdays (p < 0.05) but did not lead to significant ambient O-3 increase (p > 0.05). Isopentane, a general marker for vehicle exhaust, showed descending concentrations from morning to midnight and good correlation with vehicle numbers on road, indicating a potential source to the VOCs at this site. The results from PMF proved that vehicular exhaust was the largest source to the VOCs in this study (64.4%). VOC categories showed a reverse sequence in abundance of concentrations and OFP contributions that alkenes showed the highest OFPs although with the lowest abundance in TOVCs due to their high reactivity in photochemical reactions. High OFPs from ethylene and isopentane indicated that vehicular emissions could be the largest potential OFP source in this site. OFPs from isoprene (from 1.85 to 13.4 ppbv) indicated that biogenic VOCs should not be negligible in urban Xi'an city when controlling O-3 pollutants. Comparison of two OFP methods was conducted and MIR method was proved to be more reasonable and scientific in summer Xi'an. Therefore, vehicular emission, the largest contributor to ambient VOCs and also OFPs, as well as biological source should be priority controlled in guiding VOC emissions and reducing O-3 control policies.
资助项目	Natural Science Foundation of Shaanxi Province, China[2019JQ-386] ; China Postdoctoral Science Foundation[2019M653658] ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS[SKLLQG1826]
WOS关键词	VOLATILE ORGANIC-COMPOUNDS ; YANGTZE-RIVER DELTA ; SOURCE APPORTIONMENT ; AMBIENT VOCS ; ROADSIDE ENVIRONMENT ; VEHICULAR EMISSIONS ; TEMPORAL VARIATIONS ; RISK-ASSESSMENT ; RECEPTOR-SITE ; SURFACE OZONE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000490028900020
资助机构	Natural Science Foundation of Shaanxi Province, China ; China Postdoctoral Science Foundation ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13268]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Shen, Zhenxing
作者单位	1.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710049, Shaanxi, Peoples R China 2.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China 3.Chinese Univ Hong Kong, Jockey Club Sch Publ Hlth & Primary Care, Hong Kong, Peoples R China 4.Chinese Acad Sci, Changsha Ctr Mineral Resources Explorat, Guangzhou Inst Geochem, Changsha, Hunan, Peoples R China 5.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Sun, Jian,Shen, Zhenxing,Zhang, Yue,et al. Urban VOC profiles, possible sources, and its role in ozone formation for a summer campaign over Xi'an, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2019,26(27):27769-27782.
APA	Sun, Jian.,Shen, Zhenxing.,Zhang, Yue.,Zhang, Zhou.,Zhang, Qian.,...&Li, Xuxiang.(2019).Urban VOC profiles, possible sources, and its role in ozone formation for a summer campaign over Xi'an, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,26(27),27769-27782.
MLA	Sun, Jian,et al."Urban VOC profiles, possible sources, and its role in ozone formation for a summer campaign over Xi'an, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 26.27(2019):27769-27782.