期刊名称：Revista Internacional de Contaminación Ambiental
印刷版ISSN：0188-4999
出版年度：2000
卷号：16
期号：4
页码：169-174
语种：Spanish
出版社：Centro de Ciencias de la Atmósfera
摘要：Important factors controlling the fate of heavy metals in soils systems include the soil solution pH, the presence of complexing ligands, and a number of soil properties, such as texture and organic matter content. The adsorption of metals is an important process that controls low metal concentrations in soils. It can be described as a surface complexation reaction with soil particle surfaces. Adsorption of cationic metals is favored at higher pH; oxyanionic metals and metalloids are adsorbed at low pH. At high metal concentrations, specific metal-containing geochemical phases may be important. Limited technologies have been developed for the remediation of metal-contaminated soils; these include excavation and removal, stabilization and solidification, and soil washing. The form of the metal contamination determines the bioavailability of the metal in the soil matrix and affects the success of metal washing from the soil.
其他摘要：Important factors controlling the fate of heavy metals in soils systems include the soil solution pH, the presence of complexing ligands, and a number of soil properties, such as texture and organic matter content. The adsorption of metals is an important process that controls low metal concentrations in soils. It can be described as a surface complexation reaction with soil particle surfaces. Adsorption of cationic metals is favored at higher pH; oxyanionic metals and metalloids are adsorbed at low pH. At high metal concentrations, specific metal-containing geochemical phases may be important. Limited technologies have been developed for the remediation of metal-contaminated soils; these include excavation and removal, stabilization and solidification, and soil washing. The form of the metal contamination determines the bioavailability of the metal in the soil matrix and affects the success of metal washing from the soil.
