Content of heavy metals in tsyogorychk fishery of Dnipropetrovsk region

In modern conditions, the problem of pollution of reservoirs with heavy metals becomes especially relevant, especially given the man-made load on surface waters of Ukraine. Heavy metals are among the most dangerous conservative chemical pollutants, due to their physiological and biochemical characteristics of action, as well as transmission through food chains. Also, the danger of heavy metals is that they are bioavailable and enter the fish ponds not only during the water harvest, but also during the application of fertilizers to fields or feeding fish. Fish that complete the trophic chain of the reservoir are the end products of the fishery activities of the enterprise and directly accumulate heavy metals. At the same time, such heavy metals as Fe, Zn, Mn are essential, ie they in physiological concentrations are vital for the implementation of regulatory functions in fish. However, the body of fish accumulates heavy metals that even in small concentrations adversely affect its physiological state. The aim of the study was to determine the characteristics of the accumulation of heavy metals in the body of young carp fish in typical pond farms of Dnipropetrovsk region. The object of research were this year's scaly carp and silver carp, which were grown in Tarom and Krynychany fisheries. In the cities of heavy metals in water ponds and the carcass of fish were determined by atomic absorption spectrophotometer her on a spectrophotometer S115-M1.