DETERMINATION OF THRESHOLD VALUES OF ALIPHATIC HYDROCARBON CONCENTRATIONS DURING THEIR MIGRATION FROM SOIL TO ATMOSPHERIC AIR

The article considers the process of determining the subthreshold concentration (STC) based on the air-migration hazard indicator, which reflects the ability of harmful substances to migrate from soil to atmospheric air. Establishing an STC is an important step in assessing risks to human health and ecosystems, as it helps determine safe levels of exposure to pollutants. The paper analyzes modern research methods and takes into account factors affecting the migration of substances, such as temperature, humidity and soil composition. The practical application of STC is considered in the context of developing strategies to reduce air pollution and protect public health. Based on the obtained experimental data, a value close to the maximum permissible concentration (MPC) for atmospheric air was selected. In this regard, the concentration of aliphatic hydrocarbons equal to 400 mg/kg in the soil was studied. This study allows us to assess the potential impact of such concentrations on the environment and human health, as well as identify possible risks associated with soil and air pollution.