SNOW AS AN INDICATOR OF ENVIRONMENTAL POLLUTION IN THE CITY OF MAGNITOGORSK: EVALUATION OF THE QUANTITATIVE CONTENT OF TOXICANTS

Ponomareva Ekaterina Mikhailovna, Osinkina Tatyana Vladimirovna, Kolchugina Guzel Farykhovna

The purpose of this study is to assess the quantitative content of toxicants in the snow cover of some areas of the city of Magnitogorsk. Determination of water quality was carried out according to organoleptic parameters in accordance with standard methods, analysis of the content of chemical compounds was carried out by atomic absorption method in the chemical laboratory of PJSC MMK. In the course of chemical analysis, excesses of indicators for calcium and iron were established: 7.4 times for calcium content at the Leninsky point, for iron 32.96 times at the Left Bank point. In terms of the content of ionic forms, mercury, cadmium and lead, no excesses of the MPC standard for drinking water and cultural and domestic water use and the all-Russian background indicator were found to be exceeded. The territory of the city of Magnitogorsk is systematically subject to emissions of solid dust pollutants with subsequent sorption on sediments and storage. The most favorable for living in the city is the southern part - Ordzhonikidzevsky district (right bank). Knowing the composition of snow pollutants, the accumulating capacity of precipitation, as well as selecting methods for continuous local monitoring of the state and migration activity of pollutants in the area, it is possible to timely determine the excess of MPC and take appropriate measures.

Keywords:toxicants; contamination indicator; snow; heavy metals; precipitation; environment; maximum permissible concentration; anthropogenic impact; xenobiotics