Investigation of bottom sedimentsin anthropogenic offshore of the southern coast of Crimea
The multi-element chemical composition (Na, K, Ca, Mg, Cl, Br, I, Rb, Fe, Zn, Mn, Cu, Ba, Cr, Cd, Pb, Ag, Au, Mo, Co, Hg, Sr, Sb, As, Sc, La, Ce, Nd, Sm, Eu, Tb, Lu, Th, U, Y, Hf, Se, Cs, Ta, Yb) and microalgae in bottom sediments near of the deep-water releases issues of wastewater after purification (shelf zone) were studied. The quantitative determination of Mg, J, Sm, Lu, Nd, Rb, Se in the sediments were carried out at the first time there. It has been founded that wastewater is the pollution source of bottom sediments by heavy metals Ni, Cd, Cr, Ba and rare earth elements Sr and Yb. It was noted that filamentous cyanophyta (order Oscillatoriales) concentrated Sc, La, Ce, Yb. And after the death of cyanophyta the toxic Cu, As, Ba and Sr, Yb, which had been accumulated by these algae remain on the seabed habitat and create a range of secondary pollution of the marine environment.