OCENA ZANIECZYSZCZENIA WYBRANYMI METALAMI I METALOIDAMI OSADÓW DENNYCH RZEKI STOŁY NA TERENIE MIEJSKO-PRZEMYSŁOWYM TARNOWSKICH GÓR

Abstract

ASSESSMENT OF CONTAMINATION OF THE BOTTOM SEDIMENTS OF THE STOŁA RIVER WITH SELECTED METALS AND METALLOIDS WITHIN THE URBAN-INDUSTRIAL AREA OF TARNOWSKIE GÓRYAbstract. Studies into the contents of selected metals and metalloids in the bottom sediments of the Stoła River were based on samples collected within strongly urbanized and industrialized town of Tarnowskie Góry, which has been under intensive anthropopressure since the 13th century. Determination of the total contents of the components in the silt-clay fraction of the bottom sediments (< 0.063 mm) made it possible to calculate the value of the geoaccumulation indexes and to assess their contamination. Very strong and strong contamination levels of the sediments are mostly recorded for cadmium, lead, zinc and mercury. The sediments are not contaminated with chromium and nickel, while the arsenic and boron contens vary in the sediments.