Chemical composition of atmospheric precipitation in Russian Subarctic

Abstract

The relevance of studying chemical composition of atmospheric precipitation is caused by the need to control migration and transformation of pollutants that define the surface load. The aim of the work is to summarize the measurement results of the major and minor ions of precipitation chemical composition in the Russian Polar region in 2007-2015, including the results obtained in the cooperative program of the Arctic and Antarctic Research Institute and the Voeikov Main geophysical observatory at the ice station in 2007-2008. The research methods: theoretical analysis, data comparison. The results. The authors have observed the increased content of heavy metals in precipitation in the Central Arctic. The heavy metal content reached up to 12 % of sum of ions. The maximum acidity was pH=4,7. The received values of heavy metals concentration (except nickel) in the atmospheric precipitation of the ice station didn't exceed background concentrations. The summary. The reasons of the increased content of heavy metals in the atmospheric precipitation remain almost not clear. It is necessary to organize according to the special program regular observations of acidity and chemical composition of atmospheric precipitation on the water area of the Arctic Ocean. At the same time it is necessary to expand the list of the analyzed components in atmospheric precipitation, included heavy metals in it.

Keywords

• natural conditions
• precipitation
• chemical composition
• acidity
• environment
• wet fallout