Evaluating the Behavior of Metals in soil environment
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Metals added to soil will normally be retained at the soil surface. Movement of metals into other environmental compartments, i.e., ground water, surface water, or the atmosphere, should be minimal as long as the retention capacity of the soil is not exceeded. The extent of movement of a metal in the soil system is intimately related to the solution and surface chemistry of the soil and to the specific properties of the metal and associated waste matrix. The retention mechanisms for metals added to soil include adsorption of the metal by the soil solid surfaces and precipitation. The retention of cationic metals by soil has been correlated with such soil properties as pH, redox potential, surface area, cation exchange capacity, organic mater content, clay content, iron and manganese oxide content, and carbonate content. Anion retention has been correlated with pH, iron and manganese oxide content, and redox potential. In addition to soil properties, consideration must be given to the type of metal and its concentration and to the presence of competing ions, complexing ligands, and the pH and redox potential of the soil-waste matrix.
- Department of Chemistry and Protection of the Aquatic Environment, University of Szczecin, 3C Felczaka Street, 71-412 Szczecin, Poland
- The Board of Marine Ports of Szczecin and Świnoujście S.A., Environment and Health Research Laboratory, 7 Bytomska Street, 70-603 Szczecin, Poland
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