GEOGENIC IMPACT IN THE CONCENTRATION OF SOME SPECIFIC HEAVY METALS IN SOILS IN THE BASIN OF FUSHË KOSOVA

Recent soil sampling and testing in Kosovo have shown higher concentrations of some heavy metals. The purpose of this paper is to research the possibility of geogenic impact on concentration of some specific heavy metals. Study includes geochemical analysis of stream sediments of Kosovo Basin, as representative of geogenic background, and analysis of certain areas of soil in the alluvial plain of Kosovo Basin. In order of investigating the content and correlation, selected metals such as arsenic (As), chromium (Cr), copper (Cu), mercury (Hg), manganese (Mn), nickel (Ni), lead (Pb) and zinc (Zn) have been studied in stream sediment and soil, using statistical analysis including univariate statistical methods (descriptive statistics) and multivariate statistical analysis (correlation matrices). Beside the statistical analysis, assessment includes geological and anthropogenic aspects of certain areas. It is estimated that elevated concentrations of Ni and Cr of soil are most likely of geogenic origin. An approximate value of the mean and median of As in the soil are in ranges of normal concentration and indicates also geogenic origin. This also applies for Hg and Mn. Interesting anomaly appears to Cu, where the averages as well as median in soil and sediment up to 2 m depth resulted with higher values than the average and median in the stream sediment. The values of Pb and Zn in soil are in range of normal concentration, while in areas of anthropogenic impact (Mitrovica with the surroundings) they reach very high values.