Home – Home – Jornals – Chemistry for Sustainable Development 2004 number 5

Meteorological effects on the ionic composition of atmospheric aerosols and precipitates in West Siberia have been studied. Seasonal variations have been found: decreased mass concentration of aerosol particles, increased contents of water-soluble salts in them, and changes in the proportion of ions originating from the volatile components of the atmosphere or the land or ocean surface (in aerosols and precipitates); these changes were also observed in relation to the periodicity and amount of precipitates. Increased concentrations and fractions of Ca²⁺ + Mg²⁺, Na⁺, and ions in southwestern Siberia correlate with the trajectories of air mass transfer from the territory of Kazakhstan and from the Aral and Caspian Seas. In northwestern Siberia, the effects of remote land sources are weaker, while marine source effects are more pronounced, the major precursors of ions in aerosols being the volatile components of the atmosphere.