ASSESSMENT OF THE STATE OF ATMOSPHERIC AIR IN THE MYKOLAIV CITY

Abstract

The article is devoted to the results of the study of the state of atmospheric air in Mykolaiv by measuring the content of pollutants at the stationary posts of the state monitoring system and at the stations of indicative measurements of public air monitoring. The results of the state system of atmospheric air monitoring in Mykolaiv by pollutants: carbon monoxide (CO), dust, formaldehyde (CH2O), hydrogen fluoride (HF), nitrogen dioxide (NO2), nitric oxide (NO), sulfur dioxide (SO2) for the period January 2016 – July 2021 were analyzed. The results of indicative measurements of CH2O; HF, PM2.5, PM10 in the atmospheric air of Mykolaiv in the period 2021-2023 at the indicative measurement station in the area of the Petro Mohyla Black Sea National University and the results of indicative measurements of CH2O in the period January 2021 – February 2022 at 3 indicative measurement stations in Mykolaiv are analyzed. It is shown that the main trend throughout the year for many atmospheric pollutants is an increase in their concentrations in the second half of the year and a chronic excess of the average daily maximum permissible values for dust, HF, NO2, CH2O. According to the calculated values of the air pollution index, among the 7 pollutants monitored by the state in Mykolaiv, the following have the greatest impact on the level of air pollution in the city: CO, CH2O – for which this index is higher than 1, and HF, NO2 – for which this index is higher than 5 units. It is determined that the average annual growth rate of the complex index of atmospheric air pollution was 0.5 units. It has been shown that indicative measurements of volumetric concentrations of pollutants in the air of Mykolaiv showed high concentrations of fine dust PM10 (up to 0.09 mg/m3) and confirm the stable trend of increased concentrations of formaldehyde (up to 0.06 mg/m3) and nitrogen dioxide (up to 0.05 mg/m3) in the air of Mykolaiv. It is proved that at the reference level of air pollution, environmental monitoring should be organized taking into account indicative measurements using compact stations.