Air humidity effect on the formation of organic aerosol in the atmosphere
A.N. Yermakov1, A.E. Aloyan2, V.O. Arutyunyan2
1V.L. Talroze Institute of Energy Problems of Chemical Physics of the Russian Academy of Sciences, 119334, Russia, Moscow, Leninsky prospect, bld. 38/2
2Marchuk Institute of Numerical Mathematics of the Russian Academy of Sciences, Gubkin str., 8, Moscow, 119333, Russia
Keywords: атмосфера, конденсация, коэффициент активности, органический аэрозоль, термодинамика, atmosphere, condensation, activity coefficient, organic aerosol, thermodynamics
Abstract
Thermodynamic methods with the UNIFAC model have been used to study the distribution of hydrophobic and hydrophilic organic compounds in the atmosphere between the gas and aerosol phases. The results of calculations indicate that the formation of organic aerosol involving these multifunctional compounds is favored by their combined condensation with water vapor. Leading to the transfer of water molecules to the aerosol phase, the condensation is accompanied by an increased mass concentration of organic aerosol, which should be taken into account when comparing with field observation data.
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