Assessment of the impact of indicator air pollutants in Atyrau city on public health

Abstract

The article analyzes the impact of air pollutants in Atyrau on public health, taking into account hygiene standards. Atyrau region is characterized by the development of oil and gas production and processing activities and is located on the coastal lowlands of the Caspian Sea. An oil refinery is located in the city, and as a result, atmospheric air is characterized by pollution of a number of chemical substances that are priority ones, such as hydrogen sulfide, nitrogen dioxide, formaldehyde, suspended solids, carbon monoxide, sulfur dioxide, nitrogen oxide. Most of these substances affect the respiratory system. Calculation of the inhalation risk according to the results of Kazhydromet shows that even in acute and chronic exposure, the most elevated pollutants are short-term exposure to hydrogen sulfide (HQ = 7.4), suspended particles (HQ = 4) and fine particles (HQ = 7.13) for long-term exposure. The results of field studies conducted by ECOSERVICE-S LLP show that the calculation of the risk to public health during the inhalation of pollutants is characterized by increased values under acute exposure to nitrogen (IV) dioxide (HQ = 44.03051) and hydrogen sulfide (HQ = 35, 41465). The maximum risk of acute exposure during inhalation of pollutants is formed in the area of settlement point 6 - Kursai district.