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Our research focuses on issues of biogeochemistry and ecotoxicology of trace metals and PFAS that provide insights into the geochemical reactions and trophic pathways that support and advance environmental assessment, remediation and regulatory activities. ​

1. hOW do CONTAMINANTS get into biota?

  • Bioavailability
  • Speciation modeling
  • Sediment biogeochemistry

2. hOW do metals move in the ecosystem?

  • Bioaccumulation
  • Biomagnification
  • Mercury stable isotopes

3. WHAT are the environmental impacts?

  • Toxic effects
  • Exposure modeling
  • ​Risk assessment
Funded Projects
  • 2024. PI: Develop a Community-Based Participatory Approach to Evaluate the Dietary Exposure of Per- and Polyfluoroalkyl Substances (PFAS) in an Underrepresented Community. National Sea Grant Office.
  • 2024-2027. co-PI: Promoting resilience of spotted turtle populations on DOD installations: assessing anthropogenic and climate-induced stressors in coastal and inland populations. Strategic Environmental Research and Development Program.
  • 2024-2027. PI: Evaluate bioaccumulation of per- and polyfluoroalkyl substances (PFAS) by fish, invertebrate, and passive samplers: implications for future biomonitoring in aquatic systems. Savannah River Ecology Lab.
  • 2023. Co-PI: Phytotechnologies to develop low-cost bioindicators and remediation of heavy metal contamination in ash pond sites at the SRS. Office of Fossil Energy and Carbon Management.
  • 2023. Co-PI: Characterization and recovery of critical metals from municipal solid waste incineration ashes. Savannah River National Laboratory.
  • 2020-2023. PI: Initial characterization of per- and polyfluoroalkyl substances on the Savannah River Site. Savannah River Ecology Lab.
  • 2022. PI: Sink or source? Insights into the behavior of trace elements in the sediment of constructed wetlands. University of Georgia.
  • 2020-2022. Co-PI: Efficacy of Remedial Actions on the Bioavailability of 137Cs and Hg within Lower Three Runs Biota. Area Closure Project.
  • 2021. PI: PFAS-HEALTH: Carcinogenic Effects of Per and Polyfluoroalkyl Substances (PFAS) in Wildlife and Humans. University of Georgia, Pre-Seed Grant 2021.
  • 2021. Co-PI: Bio-Volcano: Rocks, soils, and bioaccumulators as predictors of volcanic eruptions. University of Georgia, Pre-Seed Grant 2021.
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