Skyba O. Regularities of formation of content and distribution of phosphorus compounds in the rivers of Ternopil region in connection with the degree of anthropogenic loading

The PhD thesis is devoted to the study of mechanisms of phosphorus level formation and transformation in water of Ternopil region rivers due to the level of anthropogenic pressure. The contents of phosphates in water of researched rivers are determined with its migration in the soil-water-bottom sediments system, that has seasonal character. The most significant influence on the change of dissolved oxygen indexes and pH of water was recorded on the urbanized area - significant indexes of phosphate concentrations (serum value 0.033 mg / dm3) cause acidification of water (pH 5.42-7.05) and a decrease of the content of dissolved oxygen (3.55-4.78 mgO2 / dm3). There is a close connection between the content of phosphates and alkaline (Na, K) and heavy metals (Zn, Fe, Pb, Ni) in water that form the salts of phosphoric acid. In bottom sediments such alkaline and alkaline earth metals as K, Ca, Mg and heavy metals - Mn, Fe, Cu, Cd link phosphates the most, and form various organophosphorus compounds.