Atmospheric Activity of Beryllium-7 in PM2.5 Aerosols: Applications, Trends, and Environmental Perspectives.

Abstract

This article presents a review of current research on the atmospheric activity of the cosmogenic radionuclide beryllium-7  in PM2.5 aerosols. Beryllium-7 , formed in the upper layers of the atmosphere under the influence of cosmic radiation, is widely used as an indicator of exchange processes between the troposphere and stratosphere, as well as for tracking the transport pathways of aerosols and pollutants. The physical and chemical properties of beryllium-7 , methods for its determination, seasonal and spatial distribution patterns, and its relationship with meteorological parameters and PM2.5 sources are discussed. Particular attention is given to the application beryllium-7 of   for assessing transboundary aerosol transport, analyzing environmental and health impacts, and comparing data with international air quality standards. The article summarizes current trends and challenges related to the integration of beryllium-7 data into atmospheric monitoring and modeling systems. It emphasizes the scientific and practical importance of using beryllium-7  to improve air quality assessment, manage health and environmental risks, and enhance international cooperation in atmospheric monitoring.