TY CONF TI ELEMENTAL ANALYSIS OF AEROSOL PARTICLES IN SOUTH-EASTERN DISTRICTS OF NORTHERN TAJIKISTAN KW elemental composition KW heavy metals KW arsenic KW aerosol particles JO International Symposium Atmospheric and Ocean Optics. Atmospheric Physics AU Rahmatzoda, M.N. AU Abdullaev, S.F. AU Nurmatzoda, D.K. PY 2026 PB V.E. Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences