Assessment of heavy metals content in urban soils using kriging interpolation method
2018
Dantas, Alexis Toribio | Mihailović, Aleksandra | Ralević, Nebojša M. | Ninkov, Jordana | Lakatoš, Robert | Samardžić, Selena | Popov, Srđan
Surface soil samples were taken from 121 locations in Novi Sad city area near the roads with different traffic density. The area under study was the size of (4 x 5) km2. The pseudo-total concentration of metals (Cr, Ni, Pb, Zn) was determined using ICP-OES method. The mean values of the concentration of Cr, Ni, Pb, and Zn were28.0, 28.7, 82.3 and 100.3 mg/kg, respectively. Interpolation method of ordinary kriging was used to obtain the contour maps of spatial distribution of these metals in the soil. The results of the statistical and spatial analysis indicate natural (geochemical) origin of chrome and nickel while the origin of lead and zinc is determined to be anthropogenic (motor vehicle emission).
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