Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/acp-2017-433
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
15 Jun 2017
Review status
This discussion paper is under review for the journal Atmospheric Chemistry and Physics (ACP).
Influence of NO2 on secondary organic aerosol formation from ozonolysis of limonene
Changjin Hu1,*, Qiao Ma1,2,*, Zhi Liu1, Yue Cheng1, Liqing Hao3, Nana Wei1, Yanbo Gai1, Xiaoxiao Lin1, Xuejun Gu1, Weixiong Zhao1, Mingqiang Huang1,4, Zhenya Wang1, and Weijun Zhang1,2,5 1Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
2University of Science and Technology of China, Hefei 230026, Anhui, China
3Department of Applied Physics, University of Eastern Finland, Kuopio 70211, Finland
4College of Chemistry & Environment, Minnan Normal University, Zhangzhou 363000, P. R. China
5School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, Anhui, China
*These authors contributed equally to this work.
Abstract. Limonene has a strong tendency to undergo ozonolysis to form semi-volatile and low-volatility compounds that contribute to secondary organic aerosols (SOAs) both outdoors and indoors. The influence of NO2 on SOA formation from ozonolysis of limonene has been evaluated using chamber experiments and the Master Chemical Mechanism (MCM) coupled with a gas-particle partitioning model in this work. A series of 21 indoor chamber experiments were carried out with or without NO2 under different [O3]0 / [VOC]0 ratios, and these experimental data were compared with the model simulations. Agreement in SOA yields was observed between the experimental observations and model simulations under varying conditions. Generally, SOA mass yields are positively dependent on [O3]0 / [VOC]0 without the presence of NO2. However, the introduction of NO2 leads to a more complicated change in SOA yield, which is shown to be related to initial [O3] / [VOC] ratios. When [O3]0 / [VOC]0 > 2, the introduction of NO2 results in an increase of SOA yield in the range of NO2 studied in this work; whereas a weak negative effect was found for SOA formation according to the introduction of ~ 250 ppbv NO2 under [O3]0 / [VOC]0 < 2 conditions. It was suggested that the effect of NO2 on SOA formation yields from limonene ozonolysis is related to the competition between O3- and NO3-initiated oxidation of limonene as well as the competition between RO2 + HO2 and RO2 + NO2 (or NO3). Analysis of aerosol chemical composition with Fourier-transform infrared spectroscopy (FTIR) and modeling further confirmed that the formation of peroxy acyl nitrates (PANs) and organic nitrates plays an important role in aerosol particle formation from limonene ozonolysis at the presence of NO2. The findings here indicate that accurately constraining SOA yields from NO3 oxidation is essential to evaluate the influence of NO2 on SOA formation in some real atmosphere, for example, regions with both biogenic and anthropogenic influences.

Citation: Hu, C., Ma, Q., Liu, Z., Cheng, Y., Hao, L., Wei, N., Gai, Y., Lin, X., Gu, X., Zhao, W., Huang, M., Wang, Z., and Zhang, W.: Influence of NO2 on secondary organic aerosol formation from ozonolysis of limonene, Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2017-433, in review, 2017.
Changjin Hu et al.
Changjin Hu et al.
Changjin Hu et al.

Viewed

Total article views: 257 (including HTML, PDF, and XML)

HTML PDF XML Total Supplement BibTeX EndNote
193 58 6 257 7 2 9

Views and downloads (calculated since 15 Jun 2017)

Cumulative views and downloads (calculated since 15 Jun 2017)

Viewed (geographical distribution)

Total article views: 257 (including HTML, PDF, and XML)

Thereof 257 with geography defined and 0 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 24 Jun 2017
Publications Copernicus
Download
Short summary
The effect of NO2 on SOA formation from oxidation of limonene is found to be related to the competition between O3- and NO3-initiated oxidation as well as the competition between RO2 + HO2 and RO2 + NO2 (or NO3) following the initial ozonolysis, and organic nitrates is believed to play an important role in aerosol particle formation. It is suggested that SOA formation in the regions with substantial anthropogenic-biogenic interactions should be evaluated more systematically than before.
The effect of NO2 on SOA formation from oxidation of limonene is found to be related to the...
Share