Arsenic Poisoning Through the Ages, J.O. Nriagu Analytical Methods for the Determination of Arsenic and Arsenic Compounds in the Environment, W. Goessler and D. Kuehnelt Arsenic Compounds in the Environment, K.A. Francesconi and D. Kuehnelt Arsenic Speciation in the Environment and Humans, X.C. Le Bioavailability and Risk of Arsenic Exposure by the Soil Ingestion Pathway, N.T. Basta, R.R. Rodriguez, and S.W. Casteel Aspects of Arsenic Chemistry in Relation to Occurrence, Health, and Treatment, L.S. McNeill, H.-w. Chen, and M. Edwards Biogeochemical Controls on Arsenic Occurrence and Mobility in Water Supplies, J.G. Hering and P.E. Kneebone Arsenic (V)/(III) Cycling in Soils and Natural Waters: Chemical and Microbiological Processes, W.P. Inskeep, T.R. McDermott, and S. Fendorf Metal-Oxide Adsorption, Ion Exchange, and Coagulation-Microfiltration for Arsenic Removal from Water, D.A. Clifford and G.L. Ghurye Arsenic Metabolism: Resistance, Reduction, and Oxidation, S. Silver, L.T. Phung, and B.P. Rosen Bacterial Respiration of Arsenate and Its Significance in the Environment, R.S. Oremland, D.K. Newman, B.W. Kail, and J.F. Stolz Unique Modes of Arsenate Respiration by Chrysiogenes arsenatis and Desulfomicrobium sp. str. Ben-RB, J.M. Macy and J.M. Santini Bacterial Oxidation of As(III) Compounds, H.L. Ehrlich Characteristics of Newly Discovered Arsenite-Oxidizing Bacteria, J.M. Santini, R.N. vanden Hoven, and J.M. Macy Oxidation of Arsenite by Alcaligenes faecalis, G.L. Anderson, P.J. Ellis, P. Kuhn, and R. Hille Volatilization of Arsenic, W.T. Frankenberger, Jr., and M. Arshad Index