Chemical and mineral composition of snow cover at snow waste accumulation sites in Ulan-Ude

For the first time, a study was conducted on the quality of snow cover placed on snow accumulation sites as a result of winter street cleaning in Ulan-Ude. Macro- and microelement composition of snow water and chemical and mineral composition of snow cover solid sediments were analyzed. The results showed that the snow placed on the snow accumulation sites of Ulan-Ude in general satisfies the environmental quality standards in terms of the content of the main cations and anions in snow water and the mineral and chemical composition of the solid sediment. It is largely due to the ban on the use of aggressive anti-icing agents in the territory of the Republic of Buryatia. Meanwhile, the content of Al, V, Mn, Fe, Cu, Zn, Mo, W, Hg in snow melt water exceeds the maximum permissible concentrations by 1.4-30.5 times, which is caused by the high anthropogenic load on the snow cover of Ulan-Ude in general and the cleaned areas in particular.