Single concentrations of particulate matter PM2,5 and PM10 in the lower layers of the atmosphere of Tobolsk

The aim of the work is to determine the single concentrations of particulate matter in the lower layers of the atmosphere of Tobolsk. To achieve this goal, the following tasks were set: to determine the amount of PM2,5 and PM10 in various functional zones of the city; to create schemes for the quantitative distribution of suspended particles throughout the city; to localize areas with high levels of pollution for further monitoring; to analyze the influence of certain meteorological indicators (temperature and humidity air) on the content of suspended particles. The measurements were performed according to the repeatedly tested method using the “AIR TESTER CW-HAT 200” device. It is established that in the lowers air layers of Tobolsk the content of PM2,5 and PM10 is low, the average geometric values are 5 and 7 ug/m3, respectively, which is significantly lower than the established maximum single concentrations for this indicator. The lowest values were found in the industrial and utility and storage zones, the highest values were found near the highway zone and in the city center, which suggests that the main source of PM2. 5 and PM10 is vehicles. Two sites with an increased level of pollution by suspended particles were localized. There were no significant correlations between PM2,5 and PM10 concentrations and air temperature and humidity.