Ozone and SOA formation potential based on photochemical loss of VOCs during the Beijing summer
文献类型：期刊论文
| 作者 | Zhan, Junlei; Feng, Zeming; Liu, Pengfei; He, Xiaowei; He, Zhouming; Chen, Tianzeng; Wang, Yafei; He, Hong ; Mu, Yujing; Liu, Yongchun
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| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2021-09-15 |
| 卷号 | 285页码:- |
| ISSN号 | 0269-7491 |
| 关键词 | Photochemical loss Volatile organic compounds Photochemical initial concentrations O-3 pollution Organic aerosol pollution |
| 英文摘要 | Volatile organic compounds (VOCs) are easily degraded by oxidants during atmospheric transport. Therefore, the contribution of VOCs to ozone (O-3) and secondary organic aerosol (SOA) formation at a receptor site is different from that in a source area. In this study, hourly concentrations of VOCs and other pollutants, such as O-3, NOx, HONO, CO, and PM2.5, were measured in the suburbs (Daxing district) of Beijing in August 2019. The photochemical initial concentrations (PICs), in which the photochemical losses of VOCs were accounted for, were calculated to evaluate the contribution of the VOCs to O-3 and SOA formation. The mean (+/- standard deviation) measured VOC concentrations and the PICs were 11.2 +/- 5.7 and 14.6 +/- 8.4 ppbv, respectively, which correspond to O-3 formation potentials (OFP) of 57.8 +/- 26.3 and 103.9 +/- 109.4 ppbv and SOA formation potentials (SOAP) of 8.4 +/- 4.1 and 10.3 +/- 7.4 mu g m(-3), respectively. Alkenes contributed 80.5% of the consumed VOCs, followed by aromatics (13.3%) and alkanes (6.2%). The contributions of the alkenes and aromatics to the OFPPICs were 56.8% and 30.3%, respectively; while their corresponding contributions to the SOAP(PICs) were 1.9% and 97.3%, respectively. The OFPPICs was linearly correlated with the observed O-3 concentrations (OFPPICs = 41.5 + 1.40 x c(O3), R-2 = 0.87). The O-3 formation was associated with a VOC-limited regime at the receptor site based on the measured VOCs and changed to a transition regime and a NOx sensitive regime based on the PIC. Our results suggest that more attention should be paid to biogenic VOCs when studying O-3 formation in summer in Beijing, while the control of anthropogenic aromatic compounds should be given priority in terms of SOA formation. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45622]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 作者单位 | 1.Beijing Univ Chem Technol, Adv Innovat Ctr Soft Matter Sci & Engn, Aerosol & Haze Lab, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhan, Junlei,Feng, Zeming,Liu, Pengfei,et al. Ozone and SOA formation potential based on photochemical loss of VOCs during the Beijing summer[J]. ENVIRONMENTAL POLLUTION,2021,285:-. |
| APA | Zhan, Junlei.,Feng, Zeming.,Liu, Pengfei.,He, Xiaowei.,He, Zhouming.,...&Liu, Yongchun.(2021).Ozone and SOA formation potential based on photochemical loss of VOCs during the Beijing summer.ENVIRONMENTAL POLLUTION,285,-. |
| MLA | Zhan, Junlei,et al."Ozone and SOA formation potential based on photochemical loss of VOCs during the Beijing summer".ENVIRONMENTAL POLLUTION 285(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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