Kosovets-Skavronska O. Wet deposition of chemical substances in Ukraine and estimation of its contribution to the formation of chemical composition of river water

Thesis on obtaining of the scientific candidate degree of geographical sciences on the speciality 11.00.07 - Hydrology of the land, water resources, hydrochemistry. - Geographical faculty of Kyiv National Taras Shenchenko University, Kyiv, 2010. The dynamics of chemicals content in precipitation during 1980-2008 years in warm and cold seasons had been studied, and three homogeneous periods of forming chemical composition of atmospheric precipitation was found. Furthermore, the estimation of chemical composition of precipitation was performed within these periods. Transformation of chemical composition of atmospheric precipitation over the territory of Ukraine during 1963-2008 years was investigated. Using the period of 1997-2008 years for estimation modern chemical composition of precipitation was substantiated. The quantitative estimation of wet deposition of chemicals with atmospheric precipitation in the modern period was made; moreover, spatial distribution of wet deposition of chemicals was investigated. The quantity of atmospheric component in the average annual flow of main chemical components the rivers of Ukraine was calculated.