HEAVY METALS AND TRACE ELEMENTS IN ORGANS AND TISSUES OF REPRESENTATIVES OF ICHTHYOPHAUNA OF SMALL RIVERS OF ZHYTOMYR POLISSYA

The distribution of Fe, Mn, Cu, Zn, Pb, Cd in organs and tissues of representatives of ichthyocenosis of small rivers of Zhytomyr Polessie is characteristic of dissimilarity and depends on physical and chemical properties of heavy metals as well as of functional features of organs and tissues of fishes. The maximum quantities of copper – 5.87-9.04 mg/kg and manganese – 1.0-1.81 mg/kg concentrates in a liver and brachiates, zinc – 32.66-36.89 mg/kg accumulates in kidneys and brachiates, cadmium – 0.024-0.050 mg/kg – in liver and kidneys, iron – 11.68-11.76 mg/kg and lead – 1.22-1.32 mg/kg – concentrates into the skin and brachiates of representatives of ichthyophauna. Increased concentrations of practically all heavy metals and trace elements are fixed in brachiates which take part into the exchange by chemical elements between the water environment and fish organisms. There is a risk of non-carcinogenic effects provided daily consumption of fish, the average lead content in which is 0.96 mg/kg, zinc – 29.11 mg/kg. Wherein the greatest danger exists for the occurrence of hormonal disorders (HQ = 5.65), lesions of the reproductive and central nervous systems, the occurrence of defects (HQ = 4,59) and kidney damage (HQ = 1,06)