IEECAS OpenIR  > 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, Jian1,2; Shen, Zhenxing2; Zhang, Yue2; Zhang, Zhou3; Zhang, Qian2; Zhang, Tian2; Niu, Xinyi4; Huang, Yu5; Cui, Long5; Xu, Hongmei2; Liu, Hongxia2; Cao, Junji5; Li, Xuxiang1
Corresponding AuthorShen, Zhenxing(zxshen@mail.xjtu.edu.cn)
2019-09-01
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
Volume26Issue:27Pages:27769-27782
AbstractTo 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.
KeywordVOC profiles OFP Temporal variation Source apportionment
DOI10.1007/s11356-019-05950-0
WOS KeywordVOLATILE ORGANIC-COMPOUNDS ; YANGTZE-RIVER DELTA ; SOURCE APPORTIONMENT ; AMBIENT VOCS ; ROADSIDE ENVIRONMENT ; VEHICULAR EMISSIONS ; TEMPORAL VARIATIONS ; RISK-ASSESSMENT ; RECEPTOR-SITE ; SURFACE OZONE
Indexed BySCI ; SCI
Language英语
Funding ProjectNatural 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 Research AreaEnvironmental Sciences & Ecology
Funding OrganizationNatural Science Foundation of Shaanxi Province, China ; China Postdoctoral Science Foundation ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS
WOS SubjectEnvironmental Sciences
WOS IDWOS:000490028900020
PublisherSPRINGER HEIDELBERG
Citation statistics
Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/13269
Collection粉尘与环境研究室
Corresponding AuthorShen, Zhenxing
Affiliation1.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China
2.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China
3.Chinese Acad Sci, Changsha Ctr Mineral Resources Explorat, Guangzhou Inst Geochem, Changsha, Hunan, Peoples R China
4.Chinese Univ Hong Kong, Jockey Club Sch Publ Hlth & Primary Care, Hong Kong, Peoples R China
5.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710049, Shaanxi, Peoples R China
Recommended Citation
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.
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