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

The purpose of author's researches - assessment of level of pollution by fine particles (PM10, PM5, PM2.5, PM1, PM0.5) of atmospheric air in territories of parks in Volgograd. Due to the fact that the parks operate year-round, research was carried out in the winter, spring-autumn and summer periods of the year. Research, in particular, was carried out in two parks located in the central part of Volgograd, where there are no industrial enterprises, and are adjacent to one of the largest city highways. Analysis of the particulate composition and mass concentration of fine dust in atmospheric air was performed using microscopic analysis and using Handheld 3016. At the same time, the temperature and relative humidity of the air, wind speed and atmospheric pressure were measured. Measurements were made in places with the largest concentration of visitors to the park at an altitude of 0.5 m, 1 m and 1.5 m, i.e. in the breathing zone of children, adolescents and adults. In the air environment on the territory of the surveyed park zones of Volgograd, there is no excess of the MPC in the atmospheric air for suspended matter RI2.5 observed, but there are cases of significant excess of the average annual and average daily MPC for RM10 particles.

Keywords: atmospheric air, park area, fine dust, maximum permissible concentration (MAC), dispersed composition