STUDY OF THE DYNAMICS OF ATMOSPHERIC AEROSOLS, DUST AND AEROIONS CONCENTRATIONS

Abstract

A study of changes in the concentration of atmospheric aeroions and suspended particles was carried out. The research was carried out under the assumption that light aeroions settle on aerosol particles and fine dust particles in the same way. As the initial data, it is necessary to take the generation of aeroions as a result of natural radioactivity, which is the main factor of ionization in this case. In the corresponding equations, the coefficients of recombination of aeroions, settling on neutral and oppositely charged suspended particles were taken as average values, which are known from reference sources. The presence of the electric field of the array of aeroions was not taken into account due to the relatively small concentrations of aeroions in atmospheric air under normal conditions. Verification of the calculation results was carried out in a test room with a known generation of aeroions and suspended particles in the form of aerosols. The test results showed an acceptable match between the calculated and experimental data. Discrepancies, in particular non-monotony of the curves of changes in the concentrations of aero-ions and aerosols, are caused by large passport errors of the measuring equipment and the influence of aerosols on the measurement of the concentration of aero-ions. To assess the dynamics of concentrations of air ions and suspended particles in the real atmosphere, one should take into account the gradient and directional movement of air ions in the surface layer of the air and the ambiguous influence of relative air humidity on the concentration of air ions. Considering the complexity of measuring small concentrations of particles in the air of all categories, the calculation method can be considered quite acceptable.