Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Atmos. Chem. Phys., 17, 10743-10752, 2017
https://doi.org/10.5194/acp-17-10743-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
13 Sep 2017
Gasoline aromatics: a critical determinant of urban secondary organic aerosol formation
Jianfei Peng1,a, Min Hu1,4, Zhuofei Du1, Yinhui Wang2, Jing Zheng1, Wenbin Zhang2, Yudong Yang1, Yanhong Qin1, Rong Zheng2, Yao Xiao1, Yusheng Wu1, Sihua Lu1, Zhijun Wu1, Song Guo1, Hongjun Mao3, and Shijin Shuai2 1State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
2State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
3College of Environmental Sciences and Engineering, Nankai University, Tianjin 300071, China
4Beijing Innovation Center for Engineering Science and Advanced Technology, Peking University, Beijing 100871, China
anow at: Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, USA
Abstract. Gasoline vehicle exhaust is an important contributor to secondary organic aerosol (SOA) formation in urban atmosphere. Fuel composition has a potentially considerable impact on gasoline SOA production, but the link between fuel components and SOA production is still poorly understood. Here, we present chamber experiments to investigate the impacts of gasoline aromatic content on SOA production through chamber oxidation approach. A significant amplification factor of 3–6 for SOA productions from gasoline exhausts is observed as gasoline aromatic content rose from 29 to 37 %. Considerably higher emission of aromatic volatile organic compounds (VOCs) using high-aromatic fuel plays an essential role in the enhancement of SOA production, while semi-volatile organic compounds (e.g., gas-phase PAHs) may also contribute to the higher SOA production. Our findings indicate that gasoline aromatics significantly influence ambient PM2. 5 concentration in urban areas and emphasize that more stringent regulation of gasoline aromatic content will lead to considerable benefits for urban air quality.

Citation: Peng, J., Hu, M., Du, Z., Wang, Y., Zheng, J., Zhang, W., Yang, Y., Qin, Y., Zheng, R., Xiao, Y., Wu, Y., Lu, S., Wu, Z., Guo, S., Mao, H., and Shuai, S.: Gasoline aromatics: a critical determinant of urban secondary organic aerosol formation, Atmos. Chem. Phys., 17, 10743-10752, https://doi.org/10.5194/acp-17-10743-2017, 2017.
Publications Copernicus
Download
Short summary
Through an environmental chamber approach, we find that a small increase in aromatic content in gasoline fuel will result in a large enhancement in the secondary organic aerosol formation from vehicle exhaust. The higher emissions of both monocyclic and polycyclic aromatic organic compounds from the high-aromatic fuel played an essential role. Our findings highlight the importance of more stringent regulation of gasoline aromatic content for air quality in urban areas.
Through an environmental chamber approach, we find that a small increase in aromatic content in...
Share