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Identification of secondary fatty alcohols in atmospheric aerosols in temperate forests

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Title: Identification of secondary fatty alcohols in atmospheric aerosols in temperate forests
Authors: Miyazaki, Yuzo Browse this author →KAKEN DB
Divyavani, Gowda Browse this author
Tachibana, Eri Browse this author
Takahashi, Yoshiyuki Browse this author
Hiura, Tsutom Browse this author →KAKEN DB
Issue Date: 19-May-2019
Journal Title: Biogeosciences
Volume: 16
Start Page: 2181
End Page: 2188
Publisher DOI: 10.5194/bg-16-2181-2019
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 1 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 waxes and could be used as useful tracers for primary biological aerosol particles.
Type: article
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 宮崎 雄三

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