Hydrochemical characteristics of sulfidic lakes and springs of the northeast of Samara area

Results of hydrochemical research of sulfidic springs, streams and lakes of the Northeast of the Samara area are presented. Water of most studied water objects has similar ionic composition and contains high quantities of hydrogen sulfide and hydrosulfides. The common features and peculiarities of hydrochemistry of these unique water objects are analyzed in comparison with similar highly mineralized flow-through lakes of Republics Tatarstan and Mari El.