Risk assessment in the sediment/water system based on the metal content in sediment | Procena rizika u sistemu sediment/voda na osnovu sadržaja metala u sedimentu
2012
Krčmar, D., Prirodno–matematički fakultet, Novi Sad (Serbia) | Dalmacija, B., Prirodno–matematički fakultet, Novi Sad (Serbia) | Dalmacija, M., Prirodno–matematički fakultet, Novi Sad (Serbia) | Pešić, V., Prirodno–matematički fakultet, Novi Sad (Serbia)
The paper presents the results of different methods of sequential extraction of metal in sediment of the Great Backa canal in order to obtain data on the total, available and potentially available contents of heavy metals as well as risk assessment in aquatic systems. Based on the results of sequential extraction of metals was found that sediment does not have the risk to the environment in terms of Cr, Cu and Pb concentration while the contents of Ni, Zn and Cd sediment indicates a moderate risk. Results of sequantial extraction of metals indicate that the risk to the aquatic ecosystems decreases in risk assessment based on the pseudo total metal content in the sediment. Thus the results suggest that not all detected metals are bioavailable and that not only on the basis of total metal content of the actual risk may be overestimated.
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