Aerosol element composition of the surface air in Moscow: seasonal variations throughout 2019/2020
D.P. Gubanova1, M.A. Iordanskii2, T.M. Kuderina3, A.I. Skorokhod1, N.F. Elansky1, V.M. Minashkin4
1A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Moscow, Russia
2Karpov Institute of Physics Chemistry, Moscow, Russia
3Institute of Geography RAS, Moscow, Russia
4Vserossiyskiy nauchno-issledovatelskiy Institut Khimicheskoy Tekhnologii, Moscow, Russia
Keywords: atmosphere, aerosol, elemental composition, seasonal variability, mass concentration, percentage, enrichment factor, Moscow
Abstract
The seasonal changes in the surface aerosol elemental composition in Moscow are considered in four data series: for summer and autumn 2019 and winter and spring 2020. The surface aerosol in megalopolis is significantly enriched with sulfur, heavy metals, and metalloids (Cu, Zn, Cd, Sb, Pb, Bi, etc.). We compare the mass concentrations, mass percentages, and enrichment factors for different elements in aerosol particles. The spatial distributions of elements in the surface aerosol is not uniform through the city, which may be associated with the specificity of local sources, underlying surface, and wind regime in different regions of Moscow. The concentrations of a number of terrigenous and anthropogenic elements are the highest in the central Moscow. The reasons for seasonal variability of surface aerosol elemental composition are discussed. Identification of the main sources of different elements is the task of the next investigation.
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