Temporal variations in the elemental composition and size distribution of atmospheric aerosol in Crimea in spring-summer 2020
M.S. Artamonova1, M.A. Iordanskii1, O.G. Chkhetiani1, V.A. Lapchenko2, L.O. Maksimenkov1
1A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Moscow, Russia
2Federal state budgetary scientific institution Federal Research Center "A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS", T.I. Vyazemsky Karadag scientific station, Feodosiya, Russia
Keywords: Crimea, ground-level aerosol, mass concentration, particle size distribution function, elemental composition of aerosol
Abstract
The problem of air pollution in Crimea is of interest due to its geographical characteristics and resort use. Experimental studies on the composition and temporal variability of aerosols in the surface air layer were conducted in the southeastern part of the Crimean Peninsula at the background environmental monitoring station of T.I. Vyazemsky Karadag Scientific Station - a nature reserve of the Russian Academy of Sciences, a branch of the Federal Research Center of the Southern Oceanological Institute, from March 21 to June 17, 2020. For the first time, data are presented on temporal variations in the daily average mass concentration of aerosol, chemical elements in its composition, and aerosol particles of 0.15-1.5 mm and 0.2-5.0 mm in size. Concentrations of 25 selected chemical elements were determined. The comparison was made between the elemental composition of the aerosol and its size distribution, meteorological conditions, and the direction of long-range transport of air masses. The size of particles transporting heavy metals and metalloids (Zn, Mo, Cd, Pb, Bi, Se, Sn, and Sb), as well as elements of global origin was determined. The elements S, Cu, and Hg, for which no significant correlation with particle size was found, are likely of mixed origin due to competition between natural and anthropogenic sources in different periods. The results characterize the aerosol parameters during the spring-summer period in the eastern part of Crimea and are of interest to specialists involved in environmental monitoring in the resort and recreational region.
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