Significant contribution of spring northwest transport to volatile organic compounds in Beijing
文献类型：期刊论文
| 作者 | Yao, Dan; Tang, Guiqian; Wang, Yinghong; Yang, Yuan; Wang, Lili; Chen, Tianzeng; He, Hong ; Wang, Yuesi
|
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2021-06 |
| 卷号 | 104页码:169-181 |
| 关键词 | VOCs Source apportionment Beijing Spring Northwest transport |
| ISSN号 | 1001-0742 |
| 英文摘要 | High values of ozone (O-3) occur frequently in the dry spring season; thus, understanding the evolution characteristics of volatile organic compounds (VOCs) in spring is of great significance for preventing O-3 pollution. In this study, a total of 101 VOCs from April 16 to May 21, 2019, were quantified using an online gas chromatography mass spectrometer/flame ionization detector (GCMS/FID). The results indicated that the observed concentration of total VOCs (TVOCs) was 30.4 +/- 17.0 ppbv, and it was dominated by alkanes (44.3%), followed by oxygenated VOCs (OVOCs) (17.4%), halocarbons (12.7%), aromatics (9.5%), alkenes (8.2%), acetylene (5.3%) and carbon disulfide (2.5%). The average mixing ratio of VOCs showed obvious diurnal variation (high at night, low during daytime). We conducted a source apportionment study based on 32 major VOCs using positive matrix factorization (PMF), and coal + biomass burning (25.2%), diesel exhaust (16.0%), gasoline exhaust + evaporation (17.4%), secondary + long-lived species (16.7%), biogenic sources (4.3%), industrial emissions (9.3%) and solvent use (11.2%) were identified as major sources of VOCs. In addition to local emissions, most of the atmospheric VOCs were derived from long-distance air masses (65.7%), and the average mixing ratio of VOCs in the northwest direction was 29.4 ppbv. Combined with the results of the potential source contribution function (PSCF) indicate that research should focus on the local emissions of combustion, transportation sources and solvents usage to control atmospheric VOCs. Additionally, transmission of the northwest air mass is an important component that cannot be ignored during spring in Beijing. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46072]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Dan,Tang, Guiqian,Wang, Yinghong,et al. Significant contribution of spring northwest transport to volatile organic compounds in Beijing[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2021,104:169-181. |
| APA | Yao, Dan.,Tang, Guiqian.,Wang, Yinghong.,Yang, Yuan.,Wang, Lili.,...&Wang, Yuesi.(2021).Significant contribution of spring northwest transport to volatile organic compounds in Beijing.JOURNAL OF ENVIRONMENTAL SCIENCES,104,169-181. |
| MLA | Yao, Dan,et al."Significant contribution of spring northwest transport to volatile organic compounds in Beijing".JOURNAL OF ENVIRONMENTAL SCIENCES 104(2021):169-181. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。