engleski

Problems of adsorption in analysis of PCBs in plants growing on experimental remediation fields

Polychlorinated biphenyls (PCBs) are xenobiotics with pronounced persistence and tendency for bioaccumulation in a food chain. Therefore, PCBs present great danger for both environment and human health, even when they are present in extremely low concentrations.1 To clean up the polluted environment, phytoremediation can be used because it is one of the environment friendly methods which uses green plants to degrade or prevent further spreading of various contaminants.2, 3 During the war in Croatia, one capacitor battery of the Electrical Transformer Station in Zadar (ETS) was hit by a rocket. The oil containing PCBs was spilt over the surrounding area.4 Our phytoremediation research field was located near the ETS and composed of ten plots.5 After one year of planting, many different plant species (mainly weeds) were grown in soil contaminated with PCBs. In the literature available, we have not found any data about PCB residues adsorbed on plant surfaces. Furthermore, even the data about cleaning plants before their analysis for PCBs were very scarce. 6, 7 This study was conducted to determine the level of PCBs adsorbed on plants and their roots surfaces.

PCB; plant; remediation field; ETS Zadar

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