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The authors studied the change in the content of dissolved total iron, pH, Eh and mineralization of water bodies of the Azov sea catchment were constructed according to the megaprofile "Mine waters of the coal mining area, sedimentation and aerators ponds, small rivers (Eastern Donbass) ? Don River - Taganrog Bay - Azov Sea". The content of total dissolved iron decreased when moving from the area of mine waters to the Azov Sea, and the values of the hydrogen index, in the same direction, increased. For mineralizat...

Iron precipitates mainly in the form of hydroxides and phosphates. The study of this process in field experiments using Fe2(SO4)3 additives is of great scientific and practical interest. Since phosphorus compounds are involved in the processes of eutrophication of water bodies. To study the patterns of changes in phosphate concentrations with the addition of iron (III) ion, absolute and relative concentrations of phosphorus and iron in the form of FePO4 were calculated. Then an experiment was performed to add the ...