Cobalt and nickel concentration in the water, bottom deposits and ichthyofauna of Yavoriv water storage basin

Abstract

Arrangement of fishponds and recreation water basins are among most actual directions of technogenic environment recultivation. However, mentioned approach demands constant monitoring of different pollutants content in abiotic and biotic components of created hydroecosystem. This paper presents results of investigations of cobalt and nickel concentration in the water, bottom deposits and ichthyofauna of Yavoriv water storage basin – water reservoir, which was formed in the place of sulfur career. Mentioned elements are characterized by wide spectrum of action in fish body, which, depending on their concentration, can be either physiologic or toxic. During the experiment was revealed, that cobalt concentration in the water of Yavoriv water storage basin was within the normal range, while nickel concentration exceed MPL from 1.26 to 7.65 times depending on sampling place. Concentration of abovementioned elements in the bottom deposits of water basin in different fields of it varied greatly, wherein well–defined correlation between cobalt and nickel level in the water and bottom deposits wasn’t observed. The researches testified also the existence of tissue, organic and species peculiarities of cobalt and nickel accumulation in the body of rudd and perch. In particular, the biggest content of researched elements was observed in the gills of the fishes. Herewith, cobalt concentration in rudd gills exceeds MPL in 3.25 times, in perch gills – in 4.75 times. Nickel concentration in the muscles, gills and skin of rudd exceeds existing normative values in 1.16, 2.25 and 2.32 times respectively; in the muscles, gills and skin of perch – in 1.08, 6.84 and 3.1 times respectively.

Accumulation and distribution of zinc and manganese in aquatic ecosystem of Yavoriv water reservoir, Lviv region, Ukraine

“…Thus, obtained results evident the fact, that there is no evident dependence between Zn and Mn content in water and bottom deposits; at the same time, the fact of this metals accumulation in bottom deposits in greater measure than in water was approved in all points of samples taking. Presented results confirms the fact of heavy metals above normal accumulation in the water and bottom deposits of Yavoriv water reservoir, which was previously established in our studies Dobryanska et al, 2016).…”