RESEARCH OF THE PARTICLE SIZE DISTRIBUTION OF ATMOSPHERIC SUSPENSION IN SOME SETTLEMENTS OF MAGADAN REGION

Abstract

The paper presents the results of the first study of the particle size distribution of atmospheric suspension contained in the snow of some settlements of the Magadan region (the town of Magadan, the town of Susuman and the urban settlement of Omsukchan). The study found a significant content of PM₁₀ particles in the air of Magadan town (28 to 65.7%), and a general dominance of particles under 50 µm in diameter (PM₅₀ fraction) from 44.4 up to 100%. The content of environmentally significant PM₁₀ particles in the air of smaller settlements of the Magadan region (town Susuman and settlement Omsukchan) does not exceed 21.1%. It can be concluded that the air in the Magadan town, due to the predominance of PM₁₀ and PM₅₀ particles, is characterized by a pronounced micro-particles contamination. This level of pollution, in conjunction with the harsh climate of this region, is a constant source of respiratory diseases and a factor in reduction of the quality of life.