ESTIMATION OF INFLUENCE OF ANTROPOGENIC A ND NATURAL SOURCES ON SPATIAL-DISTRIBUTION OF HEAVY-METALS IN BOTTOM SEDIMENTS OF THE PETER-THE-GREAT BAY (THE SEA OF JAPAN)

The distribution of Zn, Pb, Ag, Cd, Ni, Co and Mn in surfacial bottom sediments of the peter the Great Bay (the Sea of Japan) is studied. Se veral impact zones in the Bay were found being connected with the acti on of next antropogenic sources of metals: a) Vladivostok city waste d isposal on the shore of the Gornostay Bay; b) Vladivostok and Bol'shoi Kamen' cities as complexes of industrial objects; c) the Razdol'naya River. The content of Zn, Pb, Cd, Cu, and Ag in sediments of antropoge nically influenced areas is controlled by the position and the power o f pollutant sources. The distribution of lithophilic elements (Mn, Ni, Co) in bottom sediments of the Peter the Great Bay is mainly determin ed by natural processes: physical-chemical denudation of rocks and soi l and coastal erosion.