GEOCHEMISTRY OF WEATHERING
Physical and chemical weathering of minerals and rocks. Silicate stability in the surface environment. Weathering environments.
The main features of soil. The main solid constituents and their surface properties: clay minerals; Fe and Al oxyhydroxides; organic matter. Sorption reactions: ionic exchange, specific adsorption, organic complexation; the theory of surface complexes; sorption capacity. Precipitation and coprecipitation. Chemical fractionation of elements in soil. Soil contamination by heavy elements. The soil-plant system: mobility and bioavailability of chemical elements in soil. Soil quality assessment using bioindicators.
Fractionation, speciation and mobility of chemical elements in natural waters. Chemical features of atmospheric precipitations and surface waters. Groundwater: hydrogeochemical processes in water-rock interaction; chemical features of groundwater. Quality of natural waters. Contamination of surface waters and groundwater.
Researches in environmental geochemistry. Sampling design. Sampling procedures and laboratory treatment of natural waters, stream sediments and soil. Main analytical techniques and equipments for the chemical characterization of soil, stream sediments and natural waters.