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2012, vol. 49, br. 1, str. 17-23
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Teški metali u zemljištu i sedimentu potencijalne lokalne ekološke mreže srednjeg Banata
Heavy metals in soil and sediments of the planned ecological network of central Banat, Serbia
aNaučni institut za ratarstvo i povrtarstvo, Novi Sad bInstitute for Nature Conservation of Vojvodina Province, Novi Sad
e-adresa: jordana.ninkov@ifvcns.ns.ac.rs
Sažetak
U cilju analize stanja i procene uticaja poljoprivrede na području potencijalne lokalne ekološke mreže, analizirano je obradivo zemljište, zemljište pašnjaka i sediment jezera, na sadržaj teških metala (Cu, Zn, As, Pb, Ni, Cd i Cr). Od ukupno 38 analiziranih uzoraka zemljišta i sedimenta, samo u dva uzorka izmeren je sadržaj metala veći od MDK za poljoprivredno zemljište. Povišen sadržaj metala zabeležen je u slučaju jednog uzorka za bakar (189,1 mg kg-1) sa obradivog zemljišta iz vinograda i nikla za jedan uzorak pašnjaka (60,9 mg kg-1). Na osnovu detaljnijih istraživanja utvrđeno je da je povišen sadržaj Ni geohemijskog, dok je bakar antropogenog porekla. Od ukupno 10 analiziranih uzoraka sedimenta, prema holandskom kriterijumu za graničnu vrednost, povišen sadržaj Cu i Zn ima po jedan uzorak sedimenta i četiri uzorka imaju višu koncentraciju za Ni. Istovremeno, sadržaj metala u ispitivanom sedimentu je daleko manji od predviđenih remedijacionih vrednosti.
Abstract
In order to establish the current status and assess the impact of agriculture in the area planned to be included into the envisaged environmental network, we analyzed the arable soil, pasture soil and sediments for the content of heavy metals. Out of a total 38 analyzed soil and sediment samples, only 2 were found to contain heavy metals in concentrations higher than the MAC for agriculture soil. An increased concentration of copper (189.1 mg/kg) was recorded in a sample of vineyard soil and increased nickel concentrations were recorded in one sample of pasture soil (60.9 mg/kg). Further research showed that the high Ni concentrations were of the geochemical origin, while the high Cu was of anthropogenic origin. Out of a total 10 sediment samples analyzed according to Dutch criteria for threshold values, increased concentrations of Cu and Zn were found in one sample, and high concentrations of Ni were found in 4 samples. At the same time, the heavy metal contents in the analyzed sediments were much below the anticipated remediation values.
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