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Doug Beak
Dr. Beak is an environmental chemist in GWERD’s Subsurface Remediation Branch. He holds a B.S. and Ph.D. from The Ohio State University. He is a member of the Geochemical Society, the Geological Society of America, the Soil Science Society of America, and the Society of Environmental Toxicology and Chemistry. His research areas are arsenic in drinking water, permeable reactive barriers, monitored natural attenuation, nanotechnology, and water quality and availability.
Dr Beak’s research uses microscopic (SEM and TEM) and spectroscopic techniques (XAS, FTIR, and UV-Vis) to probe the chemical reactions occurring at the solid/solution interface, as well as those in solution. The ultimate goal of this research is to understand the chemical processes that govern the fate, transport and bioavailability of contaminants in the environment. Examples of Dr Beak’s research are:
- Arsenic speciation in sulfidic environments
- The behavior of cerium, silver, and zinc nanoparticles in soils and sediments
- Arsenic and lead attenuation on metal oxide surfaces and changes in bioavailability that occur upon sorption
- How permeable reactive barriers affect arsenic mobility and attenuation
- The effect of redox changes on the speciation of cobalt and copper in soils and sediments that undergo altered redox conditions
Selected Publications
Beak, D.G. and R.T. Wilkin. (In review). “Thioarsenic Speciation in Sulfidic Solutions I: Examination Using X-Ray Absorption.” Geochim. Cosmochim. Acta.
Beak, D.G. and R.T. Wilkin. (In review). “Thioarsenic Speciation in Sulfidic Solutions I: ICICP-MS Examinations of Thioarsenic Speciation. Geochim. Cosmochim. Acta.
De Livera, J., M.J. McLaughlin, D. Beak, G.M. Hettiarachchi, and J. Kirby. (In review). “Release of Dissolved Cadmium and Sulfur Nanoparticles From Oxidizing Sulfide Minerals.” Soil Science Society of America Journal.
Cornelis, G., J.K. Kirby, D.G. Beak, D. Chittleborough, and M.J. McLaughlin. (In press). “A Method for Determination of Retention of Silver and Cerium Oxide Nanoparticles in Soils. Environmental Chemistry.
Beak, D.G. and R.T. Wilkin. (2009). “Performance of a Zero-Valent Iron Reactive Barrier for the Treatment of Arsenic in Ground Water – Part 2, Geochemical Modeling and Solid Phase Studies.” Journal of Contaminant Hydrology, 106: 15–28.
Wilkin, R.T., S.D. Acree, R.R. Ross, D.G. Beak, and T.R. Lee. (2009). “Performance of a Zero-Valent Iron Reactive Barrier for the Treatment of Arsenic in Ground Water – Part 1, Hydrogeochemical Studies.” Journal of Contaminant Hydrology, 106: 1–14.
Beak, D.G., N.T. Basta, K.G. Scheckel, and S.J. Traina. (2008). “Linking Solid-Phase Speciation of Pb Sequestered to Birnessite to Oral Pb Bioaccessibility: Implications for Soil Remediation.” Environmental Science and Technology, 42: 779–785.
Beak, D.G., R.T. Wilkin, R.G. Ford, and S.D. Kelly. (2008). “Examination of Arsenic Speciation in Sulfidic Solutions Using X-Ray Absorption Spectroscopy.” Environmental Science and Technology, 42, 5: 1643–1650.
Beak, D.G., N.T. Basta, K.G. Scheckel, and S.J. Traina. (2006). “Bioaccessibility of As(V) Bound to Ferrihydrite Using a Simulated Gastrointestinal System.” Environmental Science and Technology, 40: 1364–1370.
Beak, D.G., N.T. Basta, K.G. Scheckel, and S.J. Traina. (2006). “Bioaccessibility of Arsenic Bound to Corundum Using a Simulated Gastrointestinal System.” Environmental Chemistry, 3: 208–214.
Beak, D.G., N.T. Basta, K.G. Scheckel, and S.J. Traina. (2006). “Bioaccessibility of Lead Sequestered to Corundum and Ferrihydrite in a Simulated Gastrointestinal System.” Journal of Environmental Quality, 35: 2075–2083.