Precipitation Quality in Different Zones of the Tashkent Region in Relation to Photo-Chemical Reactions

摘要

When studying the chemical composition of atmospheric precipitation it is possible to assess the pollution of the atmosphere, and consequently, to evaluate the ecological conditions of the region. For the evaluation of the present state of the atmosphere for the exemplary cases of Almalyk, Tashkent and Chirchik towns, the composition of emissions, using statistic reports, as well as seasonal dynamics of emissions has been investigated. The data from systematic observations of the atmospheric pollution in these towns (data of observations made at three stationary posts) were generalized. Under the conditions of the arid climate and anthropogenic pollution, a negative effect of atmospheric precipitation on the ecology and public health in the investigated region was detected, due to the washing out of pollutants from the atmosphere with atmospheric precipitation which falls on environmental objects and results in the deterioration of the ecological conditions of the region.