Investigating heavy elements status (Cd, Ni and Pb) in soils of Moghan

Mining, manufacturing, and the use of synthetic products (e.g. fertilizer pesticides, industrial waste, and land application of industrial or domestic sludge) can result in heavy metal contamination of urban and agricultural soils. In order to study the heavy metals accumulation in soils, 131 soil and water samples were taken from farmland, non farmlands of 9 regions in Moghan. Soil samples were dried and sieved in lab temperature. Than, after extraction Pb, Cd and Ni were measured using atomozeaition instrument. The results of variance analysis showed that there was significant difference between farm soil and non farm soil sample. All of measured heavy metals in farm soils were more than non farm soils. The accumulation of Pb, Cd and Ni were 3, 20, 5 times as much in farm soils than non farm soils respectively. It is possible, using fertilizers, pesticides and contaminated water could be reasons for this accumulation.