Urban VOC profiles, possible sources, and its role in ozone formation for a summer campaign over Xi'an, China
文献类型：期刊论文
| 作者 | Sun, Jian3,4; Shen, Zhenxing4; Zhang, Yue4; Zhang, Zhou5; Zhang, Qian4; Zhang, Tian4; Niu, Xinyi2; Huang, Yu1; Cui, Long1; Xu, Hongmei4 |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 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. |
| 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 |
| 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研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000490028900020 |
| 出版者 | SPRINGER HEIDELBERG |
| 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 |
| 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.Chinese Univ Hong Kong, Jockey Club Sch Publ Hlth & Primary Care, Hong Kong, Peoples R China 3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China 4.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China 5.Chinese Acad Sci, Changsha Ctr Mineral Resources Explorat, Guangzhou Inst Geochem, Changsha, Hunan, 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. |
入库方式： OAI收割
来源：地球环境研究所
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