ECOLOGICAL AND GEOCHEMICAL ASSESSMENT OF THE TERRITORY OF DARNYTSIA DISTRICT, KYIV

The article presents the results of assessing the distribution patterns of trace elements in soils, groundwater, surface water and atmospheric air in the Darnytsia district of Kyiv. It analyzes the impact of the "Energy" waste incineration plant and the Darnytsia combined heat and power plant (CHPP) on changes in environmental geochemical indicators. The content of trace elements in soil, leachate, and natural water samples was measured using ICP-MS analysis. Air pollution dynamics were evaluated using data from monitoring stations of the Kyiv Municipal State Administration. Elevated concentrations of nitrogen dioxide (NO₂) and particulate matter (PM2.5 and PM10) were identified within the Darnytsia district. The simultaneous increase in their concentrations is typical for August and September, as well as the December to March period. The highest levels of air pollution are observed near the "Energy" plant. In Lake Vyrlytsia, adjacent to the plant, the permissible concentrations for Mn and Cu were exceeded. According to general sanitary chemical indicators, the waters of Lake Vyrlytsia are categorized as "good", clean of acceptable quality, while water from the artesian wells is classified as "good", clean but tending toward the "satisfactory" class of slightly polluted waters of acceptable quality. The highest concentrations of trace elements were recorded in artesian wells located on Revutskoho Street, and the lowest on Kharkivske Highway. The study assessed the level of soil contamination around the Darnytsia CHPP (severe contamination) and the "Energy" plant (moderately hazardous contamination), identifying the main heavy metal pollutants as Hg>Zn>Cd and Cr>Cu>Hg, respectively. The soils of industrial facilities exhibit low sorption capacity (Darnytsia CHPP — 13.23, "Energy" plant — 11.05 meq/100 g) and low organic matter content (Corg — 1.69 % and 0.86%, respectively). An increased content of water-soluble forms of Ni, Mn, Cd, Zn, and Cu was recorded around industrial facilities compared to park areas.