Abstract
The article presents the results of geochemical studies of Lake Onego. The chemical composition of the water was investigated, the uneven distribution of elements (Fe, Mn, Al, Cu, Zn, and Cr) and the forms of their migration along the lake water area were revealed. It is shown that the suspended form of metals prevails in bays exposed to an anthropogenic load. The study of the chemical composition of sediment from sedimentation traps showed its difference from the composition of suspended matter and bottom sediments. The mineralogical composition of suspended matter and sediment from sedimentation traps has been studied. Their comparison with the bottom sediments of the lake is carried out. The close composition of the terrigenous component of sedimentary matter in different areas of Lake Onego has been revealed. The features of detrital matter are studied.
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