Fate and Transport of Heavy Metals in the Vadose Zone

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. TOC: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.

The chapters of this book were originally presented at the Fourth International Conference on the Biogeochemistry of Trace Elements, in June 1997 at Berkeley, California. The results of that symposium are now available to assist both specialists and those concerned with broader environmental issues.The first four chapters of Fate and Transport of Heavy Metals in the Vadose Zone are devoted to sorption-desorption processes. Subjects include the kinetics of trace metal sorption-desorption, adsorption of nickel and their isotherms, cadmium reactions, and retention mechanisms of both linear and nonlinear types. The next three sections describe complexation and speciation processes. The authors consider the effect of humic and fulvic acids, the binding of copper with organic matter, and the rate of dissolved selenium. Chapters eight through eleven scrutinize the bioavailability and retention of heavy metals and their mobility in the vadose zone. Twelve details plant-available concentration levels for heavy metals in the vadose zone. The last section relates case studies that are relevant to environmental affairs.Features

Sorption Kinetics of Trace Elements in Soils and Soil Materials - D.G. Strawn and D.L. SparksAdsorption Isotherms of Nickel in Acid Forest Soils - F. Zehetner and W.W. WenzelSorption-Desorption Equilibria and Dynamics of Cadmium During Transport in Soil - R.S. Kookana, R. Naidu, D.A. Barry, Y.T. Tran, and K. BajracharyaModeling the Kinetics of Heavy Metals Reactivity in Soils- H. Magdi SelimCopper Retention as Affected by Complex Formation with Tartaric and Fulvic Acids - A.A. Ponizovsky, T.A. Studenikina, and E.V. MironenkoCopper Mobility and Bioavailabilty in Relation with Chemical Speciation in Sandy Soil - E.J.M. Temminghoff, M.P.J.C. Marinussen, and S.E.A.T.M. Van der ZeeSelenium Speciation in Soil Water: Experimental and Model Predictions - K.J. ReddyInfluence of Reducing Conditions on the Mobility of Divalent Trace Metals in Soils - P. Cambier and R. CharlatchkaLead Mobilization in Calcareous Agricultural Soils - C. Pérez-Sirvent, J. Martínez-Sánchez, and C. García-RizoMetal Retention and Mobility as Influenced by Some Organic Residues Added to Soils: A Case Study - Luis MadridThe Rhizosphere and Trace Element Acquisition in Soils - G.R. Gobran, S. Clegg, and F. CourchesneDistribution of Ecologically Significant Fractions of Selected Heavy Metals in the Soil Profile - T. Németh, K. Bujtás, J. Csillag, G. Pártay, A. Lukács, and M.Th. van GenuchtenHeavy Metal Contamination in Industrial Areas and Old Deserted Sites: Investigation, Monitoring, Evaluation, and Remedial Concepts - I. Twardowska, S. Schulte-Hostede, and A.A.F. Kettrup