The contributions in this book were presented in a special symposium focusing on the fate and transport of heavy metals in the vadose zone as part of the Fourth International Conference on the Biogeochemistry of Trace Elements, held in Berkeley, California in June of 1997. This was one of a series of international conferences held to explore the emerging issues of the biogeochemistry of heavy metals in the environment.

Sorption Kinetics of Trace Elements in Soils and Soil Materials * Adsorption Isotherns of Nickel in Acid Forest Soils * Sorption-Desorption Equilibria and Dynamics of Calcium During Transport in Soil * Modeling the Kinetics of Heavy Metals Reactivity in Soils * Copper Retention as Affected by Complex Formation with Tartaric and Fulvic Acids * Copper Mobility and Bioavailability in Relation with Chemical Speciation in Sandy Soil * Selenium Speciation in Soil Water: Experimental and Model Predictions * Influence of Reducing Conditions on the Mobility of Divalent Trace Metals in Soils * Lead Mobilization in Calcareous Agricultural Soils * Metal Retention and Mobility as Influenced by Some Organic Residues Added to Soils: A Case Study * The Rhizosphere and Trace Elements Acquisition in Soils * Distribution of Ecologically Significant Fractions of Selected Heavy Metals in the Soil Profile * Heavy Metal Contamination in Industrial Areas and Old Deserted Sites: Investigation, Monitoring, Evaluation, and Remedial Concepts * Index.