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During the last two decades, the changes in the economic setting of the Basra province and the hydrological system of the Shatt Al-Arab River have led to significant shifts in the sources and levels of contaminants in the river. Therefore, the levels of toxic metals (Ni, Cr, Pb, As, Hg, U, and Cd) in the surface water and bed sediments at four sites have been measured to investigate the natural and...
Serpentinite soils, common throughout the world, are characterized by low calcium-to-magnesium ratios, low nutrient levels and elevated levels of heavy metals. Yet the water quality and heavy metal concentrations in sediments of streams draining serpentine geology have been little studied. The aim of this work was to collect baseline data on the water quality (for both wet and dry seasons) and metals...
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