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Atmospheric and Oceanic Optics

2021 year, number 2

Granulometric composition of settled aerosol substance and ratio of phenolic compounds in needles of different age

M.P. Tentukov1,2, V.I. Michailov3, D.A. Timushev4, D.V. Simonenkov2, B.D. Belan2
1Pitirim Sorokin Syktyvkar state University, Syktyvkar, Komi Republic, Russia
2V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
3Institute of Chemistry of the Komi Science Centre of the Ural Division RAS, Syktyvkar, Komi Republic, Russia
4Physics and Mathematics Institute of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences, Syktyvkar, Komi Republic, Russia
Keywords: laser granulometry, efflorescence, submicron aerosols, secondary organic aerosols, phenolic compounds, needles contamination


Results of laser granulometry of nanodispersed fraction of aerosol substance and UV spectrometry of water washes of different-age needles of four plant species are given. Influence of hydrothermal conditions on temporal variability of morphometric parameters of needles and contamination of its surface by phenolic compounds in composition of secondary organic aerosols is evaluated. A mechanism for generating secondary organic aerosols on the surface of different-age needles during efflorescence of phenolic compounds and their subsequent entry into the forest canopy during turbulent separation of the boundary layer from the sheet surface is discussed.