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Mapování obsahů toxických kovů v zeminách v oblasti Hranic a Teplic nad Bečvou
Kotásková, Michaela
This thesis focuses on the occurrence of toxic metals, specifically Mo, Sr, U, Rb, Th, Pb, As, Zn, Cu, Ni, Cr, and V, in the soil environment of Hranice Karst. Forest soils, soils in the Bečva River valley, and arable soils were examined, with a focus on locations with possible contamination (waste landfill, cement plant). Samples were taken according to the manual for geochemical mapping, both from the surface and at a depth of 25 cm. Subsequently, concentrations of toxic metals were measured in the collected samples using an X-ray fluorescence spectrometer, and the basic geochemical properties of the samples were evaluated. The determined values and calculated pollution indices were compared with legislative requirements for limit concentrations of metals in soils, with a selected reference location (NPR Hůrka), and with each other. The work is supplemented with maps of the concentrations of individual elements in selected locations created in the Geographic Information System. The thesis concludes with the concentrations of measured metals and metalloids present in the soil, including the locations of their occurrence in relation to the nearby cement plant and municipal waste landfill. The mapped environment of the Hranice Karst has been evaluated as an environment with only slightly elevated levels of certain elements.
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