Table of ContentsE.A. Jenne, Metal Adsorption by Earth Materials: Data Analysis, Modeling, Controlling Factors, and Related Issues. T. Payne, G.R. Lumpkin, and T.D. Waite, UraniumVII Adsorption on Model Minerals: Controlling Factors and Surface Complexation Modeling. R.T. Pabalan, D.R. Turner, P. Bertetti, and J.D. Prikryl, UraniumVI Sorption onto Selected Mineral Surfaces: Key Geochemical Parameters. P.F. Bertetti, R.T. Pabalan, and M.G. Almendarez, Studiesof NeptuniumV Sorption on Montmorillonite, Clinoptilolite, Montmorillonite, and ( - Alumina. S.B. Clark, A.L. Bryce, A.D. Leuking, J. Gariboldt, and S.M. Serkiz, Factors Affecting Tri-Valent f-Element Adsorption to an Acidic Sandy Soil. M.F. Azizian and P.O. Nelson, Lead Adsorption, Chemically-Enhanced Desorption, and Equilibrium Modeling in an Iron-0xide-Coated Sand, Synthetic Groundwater System. J.J. Payne, H.S. Quarder, R.W. Smith, and T. McLing, Uranium Sorption onto Natural Sands asa Function of Sediment Characteristics and Solution pH. L. Axe and P. Anderson, Intraparticle Diffusion of Metal Contaminants in Amorphous Oxide Minerals. L.R.G. Guilherme and S.J. Anderson, Copper Sorption Kinetics and Sorption Hysteresis inTwo Oxide-Rich Soils (Oxisols): Effects of Phosphate Pretreatment. R. Yong and E. MacDonald, Influence of pH, Metal Concentration, and Soil Component Removal on Retention of Pb and Cu by an Illitic Soil. V. Laperche and S.J. Traina, Immobilization of Lead by Hydroxylapatite. D.W. Oscarson and H.B. Hume, Effect of Solid: Liquid Ratio on the Sorption of Sr2+ and Cs+ on Bentonite. G.D. Redden, J. Li, and J.O. Leckie, Adsorption of UVI and Citric Acid on Goethite, Gibbsite, and Kaolinite Comparing Results for Binary and Ternary Systems. C.G. Ong and J.O. Leckie, Surface and Solution Speciation of Agl in a Heterogeneous Ferrihydrite-Solution with Thiosulfate. C.-C. Chen, C. Papelis, and K.F. Hayes, Extended X-Ray Absorption Fine Structure (EXAFS) Analysis of Aqueous Srll Ion Sorption at Clay-Water Interfaces. H.A. Thompson, G.A. Parks, and G.E. Brown, Jr., Structure and Composition of UVI Sorption Complexes at the Kaolinite-Water Interface. P.V. Brady, R.T. Cygan, and K.L. Nagy, Molecular Controls on Kaolinite Surface Charge and Organic Acid Adsorption. R.T. Cygan, K.L. Nagy, and P.V. Brady, Molecular Models of Metal Sorption on Kaolinite. Contributors to come, Sorptionof Molybdenum on Oxides, Clay Minerals, and Soils: Mechanisms and Models. W.-Z. Wang, M.L. Brusseau, and J.F. Artiola, Nonequilibrium and Nonlinear Transport of Cadmium, Nickel, and Strontium Through Subsurface Soils. S.D. Smith and J.R. Kramer, Fluorescence Quenching and Aluminum Adsorption to Organic Substances. M. Borkovec, U. Rusch, and J.C. Westall, Modeling of Competitive Ion Binding to Heterogeneous Materials with Affinity Distributions. D.G. Kinniburgh, W.H. van Riemsdijk, L.K. Koopal, and M.F. Benedetti, Ion Binding to Humic Substances: Measurements, Models, Mechanisms. K.S. Smith, J.F. Ranville, G.S. Plumlee, and D.L. Macalady, Predictive Double-Layer Modeling of Metal Sorption in Mine-Drainage Systems.