Assessment of Trace Elements Contamination of Irrigation Water and Agricultural Soil in Hail Region, Saudi Arabia
Journal Title: IOSR Journal of Applied Chemistry (IOSR-JAC) - Year 2019, Vol 12, Issue 1
Abstract
The determination of trace elements in water is of widespread importance. The concentrations of elements in the ground water used for irrigation in Hail region (Saudi Arabia) were determined. The trend of elements according to mean concentration was: B > Fe> Ba> Al > Cr > Cu > Mo > Se >Mn>Ni >V > Co >Pb>Sb> As > Cd> Ti.All elements level wasin the permissible levels according to CCME (2007) exceptfor Cr and Ba levels wereabove the limit. The study also, focused on the behavior of Fe, Mn, Zn, Cr, Pb, Ni, Cu, Co, Se and Cd in agricultural soil (50 samples)in Hail region. The study showed considerable variation in the levels of the analyzed elements in the soil samples. The total metal concentrations in samples ordered as follows: Fe >Mn> Zn > Cr >Pb> Ni > Cu > Co > Se > Cd. According to soil quality guidelines, there was a slight risk from Cu, Ni and Cr and a considerable risk from Zn and Se. The geoaccumulation (I-geo), single pollution, Nemerow pollution indices showed that the Se pollution intensity was significant for agricultural soils. This variation in concentration conducted to the intensity of agricultural activities. I-geo values revealed no real sign of contamination with almost all the samples, reflecting a lack of contamination for all elements except Se and Zn. While the enrichment factor (EF) for Fe and Se were less than 2 suggested that the elements come entirely from crustal materials or natural processes. Also, the EF values for Zn and Cd (mean > 20), indicated heavy pollution influenced by anthropogenic sources.
Authors and Affiliations
Amal Hajji Al- Bagawi
Keywords
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