Influence of Soil Properties and Initial Concentration on the Fractionation of Nickel, Zinc, Copper and Lead in Soils Derived from Different Parent Materials

Different fractions of Ni, Zn, Cu and Pb were determined in metal-spiked forest soils derived from four parent materials using three extractants (H2O, CaCl2 diethylenetriaminepentaacetic acid (DTPA)). It is important to determine how soil properties affect the retention these metals order predict their behavior act accordingly event accidental spillage, for example. The extraction was not sequential (before carrying out extractions, samples divided into parts), so fraction also included H2O one, DTPA contained other two. With results, we developed models each employing physicochemical characteristics (e.g., pH, organic matter content texture values) amount metal added. objective this work would influence fractioning considered, through create fraction. We found correlations between different Ni suggesting that there are condition both metals. showed than Zn or since proportions extracted by much lower. Regarding fraction, unlike case more homogeneous; they did show great variation soils, even when considering results limestone soils. This may be due fact do exert an effect on availability, two considerably sensitive no differences observed because conducted with a buffered solution. For used, obtained model R2 always greater 0.65. Considering can conclude it possible availability materials. achieved identifying some basic applying equations.