Naslov
Solubility and availability of copper, zinc lead and iron in technosols under the effect of increasing copper levels

Autori
Nenova, Lyuba ; Zgorelec, Zeljka ; Benkova, Maya ; Simeomova, Cecka ; Velichkova, Nikolaya ; Atanassova, Irena

Izvornik
International Journal of Hydrology (2576-4454) 2 (2018), 3; 379-386

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
bioavailability, copper, extraction, heavy metals, soil contamination

Sažetak
Soluble (H2O and 0.01M CaCl2) and bioavailable (0.05M EDTA) forms of copper, zinc, lead and iron in Technosols from the industrial area of a steel producing plant were assessed following addition of increasing Cu levels (500 and 1000mg kg-1). A natural, uncontaminated leached Cinnamonic forest soil from a rural area outside the steel plant was chosen as a control. The aim of the study was to assess the effect of high copper concentrations on the soluble (H2O and 0.01M CaCl2) and available (0.05M EDTA) fractions of Cu and other heavy metals (Zn, Pb, Fe) in the technogenic soils and to analyze the statistical relationships with the plant (Eruca sativa) concentrations. Higher fixation of copper was observed in the technogenic soils, compared with the control soil, both before and after the addition of Cu. Regarding Cu, Zn, and Pb a significant linear correlation between EDTA-extractable and pseudo-total (aqua regia) forms of heavy metals were found (RCu=0.838, RZn=0.698 and RPb=0.664). Concentrations of soluble forms of heavy metals obtained by extraction with 0.01M CaCl2 and H2O did not significantly predict bioavailability to plants. The increase of copper concentration in plants is related to the decrease of the concentrations of Zn and Pb in the biomass. In Technosols, Pb concentrations in plants exceeded permissible levels for food safety.

Izvorni jezik
Engleski

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