HEAVY METAL BIOACCUMULATION IN ZEA MAYS L. I MEDICAGO SATIVA L. IN THE AREA OF ZENICA

In the period March-September 2018, research was conducted on the content of heavy metals: iron (Fe), manganese (Mn), zinc (Zn), nickel (Ni), lead (Pb), vanadium (V), molybdenum (Mo), cadmium (Cd), chromium (Cr), copper (Cu) and cobalt (Co) in the soil and plants of corn (Zea mays L.) and alfalfa (Medicago sativa L.) at three locations in the Zenica area (Gradisce, Stranjani and Serici). Soil analysis shows that the soils average concentrations of manganese, nickel, vanadium, cadmium, and molybdenum exceed the permitted limits. Based on the measured values, higher concentrations of vanadium (4.93 mg/kg), cadmium (0.251 mg/kg), chromium (5.03 mg/kg), and copper (10.05 mg/kg) are present in the roots of corn. More manganese (170.7 mg/kg) is concentrated in the corns leaf, and zinc (19.95 mg/kg) in the corns grain. Most iron (1301.5 mg/kg) is concentrated in alfalfa roots, while nickel (2.43 mg/kg) and lead (4.92 mg/kg) dominate in its above-ground part. The results show that the bioaccumulation of heavy metals is more pronounced in the above-ground part of alfalfa and the roots of corn.