This article presents a study of the dependence of the deflation of fine grain dust on the air flow rate, as well as other factors affecting it. This study is important for the summary calculation of the dispersion of emissions of harmful substances from unorganized sources of enterprises into the atmospheric urban air, as well as for the selection of dust suppression measures and a better understanding of the processes of dust propagation.

Keywords: grain dust, dispersed composition, aerodynamic characteristics, specific deflation, dust propagation, atmospheric air

Results of field tests of mobile dust meters of the AirExpert series based on optical sensors (OPC-R1 / OPC-N3) at the stationary air monitoring station "Shabolovka" State Environmental Budgetary Institution (GPBU) "Mosekomonitoring", Moscow, equipped with a dust analyzer (TEOM) series 1405 , showed that the measurement accuracy meets the requirements for instruments for measuring the quality of atmospheric air in populated areas. Mapping of atmospheric air pollution in certain areas of the cities of Obninsk, Dubna, St. Petersburg, Kursk, Moscow, Volgograd (2019-2024) was carried out, which made it possible to quickly assess the environmental situation in the study area in real time, thereby detailing the data from stationary monitoring posts.

Keywords: mobile dust meters, monitoring, reference device, measurement accuracy, pollution mapping, hyperlocal monitoring