EGU2020-4329, updated on 07 Jan 2024
https://doi.org/10.5194/egusphere-egu2020-4329
EGU General Assembly 2020
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Highly oxygenated molecules and their chemistry in polluted urban environments

Qi Chen1, Xi Cheng1, Yongjie Li2, Yan Zheng1, Keren Liao1, Guancong Huang1, Ying Liu1, Tong Zhu1, and Manjula R. Canagaratna3
Qi Chen et al.
  • 1State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
  • 2Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macau, China
  • 3Aerodyne Research Inc., Billerica, Massachusetts, USA

Highly oxygenated molecules (HOMs) are important atmospheric oxidation products that may contribute to new particle formation and initial particle growth. Thousands of such compounds were quantified in both winter and summer of 2016 in Beijing by using online nitrate ion chemical ionization time-of-flight mass spectrometry. Positive-matrix factorization of the time series of the high-resolution mass spectra identified at least 10 major groups of gaseous HOMs in Beijing. We compared these PMF factors with the HOMs produced in a Potential Aerosol Mass (PAM) flow reactor in the laboratory from the oxidation of typical biogenic and aromatic precursors under various oxidation conditions. Our results show that four of the ten PMF factors perhaps correspond to biogenic precursors, and another four factors are likely related to aromatic precursors. The chemistry of these aromatic HOMs are discussed based on the results from the PAM experiments.

How to cite: Chen, Q., Cheng, X., Li, Y., Zheng, Y., Liao, K., Huang, G., Liu, Y., Zhu, T., and Canagaratna, M. R.: Highly oxygenated molecules and their chemistry in polluted urban environments, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-4329, https://doi.org/10.5194/egusphere-egu2020-4329, 2020.

This abstract will not be presented.