We investigate the fundamental mechanisms of contaminant partitioning between aqueous solutions and solids.  We focus on the following:

• Characterization and remediation of drinking water supplies with particular emphasis on the developing world
• Biogeochemical redox processes and the temporal, spatial, and chemical expression of trace metals and metalloids
• Synthesis, characterization, and reactivity of naturally-occurring and engineered poorly crystalline and nano-scale solid phases
• Analytical method development for GC and ICP mass spectroscopies and application of electron and X-ray beam techniques to environmental systems