| Autor: |
Tentyukov, M. P., Belan, B. D., Simonenkov, D. V., Patov, S. A., Mikhailov, V. I., Simonova, G. V., Plyusnin, S. N., Bobrov, Yu. A. |
| Zdroj: |
Atmospheric & Oceanic Optics; Apr2024, Vol. 37 Issue 2, p174-182, 9p |
| Abstrakt: |
Lichens are not only a bioindicator of air pollution; they also affect the chemical composition of air. The qualitative composition of exometabolites in thalli of epiphytic lichens is studied using high-performance liquid chromatography. The comparative analysis of the fractional composition of deposited aerosol matter in water washouts of lichens shows it to be characterized by a bimodal particle distribution. It is postulated that the appearance of the fine fraction is associated with the generation of secondary organic aerosols on the surface of epiphytic lichens. Their precursors are the products of photoactivated reactions between deposited aerosol matter and highly volatile organic compounds which arrive on the lichen surface as a result of efflorescence. The mechanism of entry of secondary organic aerosols into the surface air layer under the radiometric photophoresis effect is discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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