Several samples of groundwater and soils and plants have been collected from Sohar (Batina region, NW Oman) which is affected by various activities such as mining, agriculture, and sewage.
To characterize quality of groundwater, As and Cu concentrations have been investigated in waters collected from different wells. Comparison of data with local and international standard values revealed that groundwater in Sohar region is characterized by higher concentrations in Cu and As compared to standards.
In soils collected from the same area, concentrations of heavy metals have been measured in different fractions in order to investigate the mobility of such elements and risk of vulnerability in this area. A sequential extraction procedure has been applied to surface sediments to determine the partitioning of Zn, Cu, Co, Mn, Fe, Pb, Cr, Cd and Ni among 1) exchangeable and acid soluble phases, 2) Fe-Mn oxides, 3) organic matter and sulfides and 4) resistant phases. The results showed that the mobile fraction in the sewage area account only for 10% of the total concentration in sediments while in the Cu mining area, the contribution of the mobile fraction may exceed 10% especially for Pb, Mn, Cd, Cu and Co.