Cadmium and Lead Accumulation in Water and Macrophytes in an Artificial Lake

The aim of the present study was to evaluate Cd and Pb concentrations in water and plants of Malta Lake and its inflow and outflow. We evaluated two water plant species (common reed, narrow-leaved cattail) as potential indicators or accumulators of trace elements in water reservoirs in city areas. Higher cadmium concentration was noted in the lake and lake outflow, especially in April. While in the case of lead higher concentrations were recorded in the river on the lake outflow, which can be caused by lead release from lake sediments and water surface flow roads and industry area located nearby the lake. The contamination factor indicated a low or medium level for both elements. Accumulation of both heavy metals in plant materials was observed during the growing season in all plant organs. Higher levels of both heavy metals were noted for below ground organs, which may suggest water as a main source of these elements. However, the translocation factor indicated that Pb were transported in the highest amounts to the above-ground parts of plants.