Within the framework of the urban environment, the laws of distribution of the concentration of fine dust PM2.5, PM10 along road sections have been obtained. These data are necessary to assess the probability of exceeding the maximum permissible concentrations and to improve monitoring and control systems for atmospheric air. The analysis of the key factors influencing the content of PM2.5 and PM10 particles in the air of the territories adjacent to the roads has been carried out. Regression equations for total dust, PM2.5 and PM10 dust were obtained, allowing us to conclude that the concentration of PM2.5 and PM10 depends on total dust. The analysis showed that the mass content of PM10 in total dust pollution ranges from 73 to 81%, and the concentration of fine dust PM2.5 varies within two narrow ranges of about 11.6 and about 7 microns. A study of the proportion of PM2.5 of the total concentration showed that it is on average about 20%.

Keywords: dust, emissions, concentration, atmospheric air, roadway, climate, linear city, correlation coefficient, influencing factors

The article considers measures to ensure environmental safety. The analysis of the technological process of cement production was carried out, which revealed the main sources of dust emission. The results of the study of the dispersed composition of cement dust are presented.

Keywords: disperse composition of dust, PM10 and PM2.5, environmental safety, cement dust

Laboratory equipment necessary for studying the fractional composition of dust in the air of an industrial enterprise and at the border of its sanitary protection zone is proposed. harmful substances, as well as determine the dispersion of dust emitted into the air. the organization and development of new products on existing production sites.

Keywords: dust, dispersion, measurement, air, laboratory, instrument, material, filter, particle, industry, concentration, sample