ASSESSMENT OF CHEMICAL ELEMENT INPUT FROM THE SUMMER ATMOSPHERE

The results of monitoring observations for chemical composition and the amount of precipitation of chemical components with precipitation during the warm period of 2023. The chemical composition of precipitation remains stable calcium bicarbonate, slightly mineralized (10-34 mg/l), approximately neutral (pH = 7.19). The maximum contrast of influx with precipitation in different periods of the warm season (spring/autumn) is typical for hydrocarbonates, chlorides, sulfates, nitrogen compounds, Sr, Ba, F, P. The total density of atmospheric precipitation is minimal in May -1.52, maximum in June - 19.09 and July - 14.05 g/m2. An environmental assessment of the density of deposition of chemical elements showed that the maximum value of deposition of priority atmospheric pollutants (S, C, H) does not exceed the environmental norm. The average level of precipitation of the sum of nitrogen compounds is an order of magnitude higher than the environmental norm, and the maximum in June is more than twice the level of an environmental emergency. Ecologically unfavorable periods of abnormal levels of pollutants in the atmosphere are confined to periods of maximum precipitation volumes.