Ecological risk assessment of trace metals in the bottom sediments of the young water reservoir – Bardowskiego Lagoon (Warsaw) case study

¹ Institute of Environmental Engineering, Polish Academy of Sciences, M. Skłodowska-Curie St. 34, 41-819 Zabrze, Poland
² The Main School of Fire Service, Faculty of Fire Safety Engineering, Słowackiego St. 52/54, 01-629 Warsaw, Poland
³ Warsaw University of Technology, Faculty of Building Services, Hydro and Environmental Engineering, Nowowiejska St. 20, 00-653 Warsaw, Poland

^* Corresponding author : malwina.tytla@ipis.zabrze.pl

Abstract

The aim of the study was to assess the ecological risk of five trace metals, i.e. Cd, Cu, Ni, Pb, Zn, accumulated in bottom sediments of young water reservoir – Bardowskiego Lagoon located in Warsaw, Poland. In this case, several indices were used, i.e. Geoaccumulation index (I_geo), Contamination factor (CF), Potential ecological risk factor (ER), Degree of contamination (DC), Pollution load index (PLI) and Risk index (RI). The average trace metals concentrations in sediments, were as follow: Zn > Pb > Cu > Cd > Ni. The obtained results revealed that bottom sediments were very highly to extremely high contaminated by Cd and the ecological risk related with this pollutant was the largest. They also indicated that water from the study area was characterized by a low ecological quality, especially due to the content of Cd and Pb. The research proves that problem of cadmium contamination in bottom sediments of young water reservoirs is real and poses a serious ecological risk.