MOBILITY AND BIOAVAILABILITY OF HEAVY METALS AND METALLOIDS IN SOIL ENVIRONMENTS

摘要: In soil environments, sorption/desorption reactions as well chemical complexation with inorganic and organic ligands redox reactions, both biotic abiotic, are of great importance in controlling their bioavailability, leaching toxicity. These affected by many factors such pH, nature the sorbents, presence concentration ligands, including humic fulvic acid, root exudates, microbial metabolites nutrients. this review, we highlight impact physical, chemical, biological interfacial interactions on bioavailability mobility metals metalloids soil. Special attention is devoted to: i) processes on/from components soils; ii) precipitation reduction-oxidation solution onto surfaces components; iii) speciation, fractionation bioavailability.