Soil Pollution to Some Heavy Metals and Their Relation with Soil Properties in Sareskand, East Azarbayjan

Analyses of surface and groundwater samples in Sareskand region in east Azarbayjan showed some heavy metal concentrations several time higher than standard ones.Due to irrigation of the agricultural lands with these waters, heavy metal pollution of the soils and relationship between pollutant concentrations and the soil properties were goals of this research.

Particle size distribution, EC, CEC, pH, OC, and Al, As, Ba, Be, Co, Cr, Cu, Fe, Mn, Pb, Sn, Va, and Zn analyses of 21 soil samples were done. SPSS software were used to correlation coefficients between the metal concentrations and the soil properties to cluster analysis.

Mean concentrations of Al, As, Ba, Be, Co, Cr, Cu, Fe, Mn, Pb, Sn, Va, and Zn of the soil samples were 67190.48, 127.95, 487.24, 1.80, 20.52, 85.05, 49.19, 40523.81, 726.67, 60.00, 34.81, 5.76, 116.38, and 110.52 mg/Kg soil respectively.  Ba, Co, Fe, Sb, and Ni showed negative correlation with soil EC. Cobalt, Cr, and Ni high positive and Zn negative correlation with CEC were shown. Aluminum negative and Cu had positive correlation with organic carbon.

The high Al concentrations showed abundant aluminosilicates in the soils. Existence of Fe and Mn mines in around of the region, emphasis high concentrations of theses two metals. Negative correlations between clay and OC of the soil samples with some metals related to heterogeneity of soil samples. Other researches are necessary to determine geologic and anthropogenic sources of these metals.