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https://doi.org/10.5194/bg-2019-23
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-2019-23
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 18 Feb 2019

Research article | 18 Feb 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Biogeosciences (BG).

Identification of secondary fatty alcohols in atmospheric aerosols in temperate forests

Yuzo Miyazaki1, Divyavani Gowda1,a, Eri Tachibana1, Yoshiyuki Takahashi2, and Tsutom Hiura3 Yuzo Miyazaki et al.
  • 1Institute of Low Temperature Science, Hokkaido University, Sapporo, 060-0819, Japan
  • 2National Institute for Environmental Studies, Tsukuba, 305-8506, Japan
  • 3Field Science Center for Northern Biosphere, Hokkaido University, Tomakomai, 053-0035, Japan
  • anow at: RIKEN Center for Integrative Medical Science, Yokohama, 230-0045, Japan

Abstract. Fatty alcohols (FAs) are major components of surface lipids (waxes) and can act as surface-active organic aerosols in the atmosphere, influencing chemical reactions, particle lifetimes, and the formation of cloud droplets and ice nuclei. However, studies on the composition and source of the FAs in atmospheric aerosols are very limited. In this study, we identified five secondary FAs (SFAs) with C27 and C29 from aerosol samples collected throughout one year at two different deciduous forest sites in Japan. Fatty diols, such as n-heptacosan-5,10-diol, were identified in atmospheric aerosols for the first time. Among the identified SFAs, n-nonacosan-10-ol was the most abundant compound, followed by n-nonacosan-5-10-diol at both of the forest sites. Concentrations of the SFAs exhibited distinct seasonal variation, with pronounced peaks during the growing season at each forest site. The SFAs showed significant correlation with sucrose, which is used as a molecular tracer of pollen. A significant fraction of the SFAs was attributed to the submicrometer particles in the growing season. The results indicate that they originated mostly from plant wax and could be used as useful tracers for primary biological aerosol particles.

Yuzo Miyazaki et al.
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Yuzo Miyazaki et al.
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Short summary
Fatty alcohols (FAs) are major components of surface lipids and can act as surface-active atmospheric organic aerosols, influencing the cloud formation. We identified five secondary FAs in atmospheric aerosols at two temperate forest sites, and revealed their distinct seasonal variation for the first time. Our results suggest that they originated mostly from plant wax and could be used as useful tracers for primary biological aerosol particles.
Fatty alcohols (FAs) are major components of surface lipids and can act as surface-active...
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