Introduction. The monitoring of heavy metals in the environment has been a subject of great concern over the last decade and will continue to be as there is an ever-increasing amount of metals that have to be found in the environment . As...
moreIntroduction. The monitoring of heavy metals in the environment has been a subject of great concern over the last decade and will continue to be as there is an ever-increasing amount of metals that have to be found in the environment . As a result of industrial activities, metal mining, smelting and refining, atmospheric deposition, land application of sewage sludges and industrial by-products, gasoline processing, storage, and distribution as well as production of painting materials and their use can contribute to sources of heavy metal in the environment . Shaker and Saeed [4] investigated the pollutants levels including the accumulation of some heavy metals (iron, zinc, copper, manganese, cadmium and lead) in the waters of northern Niles delta, Egypt. The mean values of iron, zinc, copper, manganese, cadmium and lead were 0.804, 0.177, 0.186, 0.244, 0.019 and 0.064 ppm respectively. When these values were compared with the international permissible limits, it was found that Fe, Mn, Cd and Pb in one lake were recorded at higher levels than the international limit, while Mn and Pb in the other lake were above the international levels. Hashem [5] investigated the levels of heavy metals (Al, Br, Cd, Co, Cu, Fe Pb and Zn) in soil and water samples. The mean concentrations of these heavy metals in soils were within the range reported earlier for some Saudi Arabian soils. Likewise, the concentrations of Br, Cd, Co, Cu, Fe Pb and Zn in the water were below the maximum levels of Saudi Arabian Standard Organization.