Wuhan O. Features of chemical composition forming and water quality of the Seversky Donets river basin

Dissertation is deal with basic processes and factors of chemical composition forming and water quality of Seversky Donets river basin under natural and technogenic influence. Complex of climatic and geochemical factors are main for ions and chemical composition forming. The regional features of chemical composition forming of Seversky Donets river basin are educed. Typification of the rivers was conducted by chemical composition and main ions. It was shown that provision of the rivers with oxygen not enough. Typification of Seversky Donets river basin on maintenance oxygen was executed. The features of forming biogenic elements in water are studied. It is marked that rivers of forest-steppe zone had prevailing of ammonia nitrogen in water. It is explained by technogenic influence. High maintenance of nitrate nitrogen for steppe-zone rivers and the Donetsk ridge region is conditioned by natural receipt.