Human Exposure & Atmospheric Sciences Staff
Title: Physical Scientist
EPA Division: Human Exposure and Atmospheric Sciences Division
EPA Branch: Methods Development and Application Branch
Clay’s research supports the development and application of bioavailability tools for improved human health risk assessments for toxic metals in soil. This effort focuses on developing new or refining existing in vitro metal bioaccessibility assays that simulate the human gut, and determining the mechanisms that control metal bioavailability. Clay also specializes in trace metal analysis via ICP-MS, HPLC-ICP-MS, ICP-OES, and AA.
- M.E.M., Environmental Health and Toxicology, Duke University, 2008
- B.A., Biology, Dartmouth College, 2003
- Physical Scientist, USEPA, ORD, NERL-HEASD, RTP, NC 2011-present
- ORISE Research Fellow, USEPA, ORD, NERL-HEASD, RTP, NC 2010-2011
- Student Services Contractor, USEPA, ORD, NERL-HEASD, RTP, NC 2010-2011
- Research Coordinator, Laboratory of Molecular Aquatic Toxicology, Duke University, NC 2008-2009
- Research Assistant, Laboratory of Molecular Aquatic Toxicology, Duke University, NC 2007-2008
- Staff Scientist, MB Consulting Engineers, San Diego, CA 2003-2006
- Nelson C, Gilmore T, Harrington J, Scheckel K, Miller B, Bradham K. 2013. Evaluation of a low-cost commercially available extraction device for assessing lead bioaccessibility in contaminated soils. Environ. Sci.: Processes Impacts DOI: 10.1039/C2EM30789H.
- Bradham K, Scheckel K, Nelson C, Seales P, Lee G, Hughes M, Miller B, Yeow A, Gilmore T, Serda A, Harper S, Thomas D. 2011. Relative Bioavailability and Bioaccessibility and Speciation of Arsenic in Contaminated Soils. Environ Health Perspect 119:1629-1634.
Human Exposure & Atmospheric Sciences Division
National Exposure Research Laboratory
US EPA Office of Research and Development
109 TW Alexander Drive
Research Triangle Park, NC 27709