Reports by Donald L. Sparks

	Effects of Environmental Conditions on the Properties of Biogenic Manganese Oxides.
	Microbe-Mineral Interactions and their Influence on ArsenicTransformations in the Soil Environment.
	Real-Time Surface-Chemistry of Arsenite Oxidation by Hydrous Manganese Oxide.
	The Influence of Phosphate and Sulfate on Arsenic Oxidation Via Hydrous Mn-Oxides.