Heavy metals are considered hazards because of their toxicity to environment and human life. Considering the fact that industrial area of Kosovo Thermal Power Plants (KTPP) is one of most polluted areas in Kosovo, this study describes an investigation of environmental pollution along the river stream of Sitnica, which passes near the KTPP and accumulation of selected heavy metals (As, Cd, Ni, Pb and Cr) in water, soil and willow bark samples (Salix alba, L. Fam. Salicaceae). Samples were analyzed using ICP-MS (inductively coupled plasma mass spectrometry), and the results were obtained from 30 water samples, 30 soil samples, and 30 willow bark samples, approximately along the 35 km of river stream of Sitnica, in both directions from the source of pollution.

According to the obtained results, it was determined that the content of these pollutants in the study area differ among elements and samples, and they can cause harmful effects  in plants, animals and humans. Chromium, nickel and lead in water samples were above target values, and in some cases above intervention values. While in soil samples chromium was within permissible limits, maximum concentrations of arsenic, cadmium and lead were above intervention values. In willow bark samples concentration of nickel was detected in the upper allowed limit. Cadmium and chromium mostly were above permissible limits. Results indicated a possible threat to environment pollution and impact of the industrial sector in the environment, and if adequate protection measures are not taken, degradation of living environment will continue.

heavy metals, analysis, accumulation, environmental pollution

Published by University of Zagreb, Faculty of Agriculture, Zagreb, CROATIA
Sponsored by Ministry Science and Education of the Republic of Croatia