Heileen Hsu-Kim

Heileen Hsu-Kim

Mary Milus Yoh and Harold L. Yoh, Jr. Associate Professor of Civil and Environmental Engineering

Professor Heileen (Helen) Hsu-Kim is an environmental engineer who specializes in environmental aquatic chemistry and geochemistry. Her research tackles problems related to pollutant metals and the biogeochemical processes that alter their distribution in water, soil, and air. The applications of this work include environmental remediation technologies, the impacts of energy production on water resources, global environmental health, and the environmental implications and applications of nanotechnology.

Dr. Hsu-Kim's current research projects are focused on mercury biogeochemistry, the environmental implications of nanomaterials, the impacts of coal ash disposal on water quality, and recovering valuable materials from coal ash wastes. A central theme to her work is the utilization of chemical speciation for understanding and predicting the persistence, mobility and bioavailability of metals and minerals in the aquatic environment.

The methodologies her group employs for this research include laboratory techniques for quantifying trace metal speciation, water-surface interactions, and in-situ applications of solid-state microelectrodes to determine important aquatic constituents in water and sediment.

Appointments and Affiliations

  • Mary Milus Yoh and Harold L. Yoh, Jr. Associate Professor of Civil and Environmental Engineering
  • Associate Professor in the Department of Civil and Environmental Engineering
  • Associate Professor of Environmental Sciences and Policy

Contact Information

  • Office Location: 127A Hudson Hall, Durham, NC 27708
  • Office Phone: (919) 660-5109
  • Email Address: hsukim@duke.edu
  • Websites:


  • Ph.D. University of California at Berkeley, 2004
  • M.S. University of California at Berkeley, 1999
  • B.S. Massachusetts Institute of Technology, 1998

Research Interests

Aquatic chemistry and geochemistry, trace element environmental chemistry, nanogeoscience, mercury biogeochemistry, water-particle surface processes.


Water, Resources and Treatment
Environmental Engineering
Environmental Impacts

Awards, Honors, and Distinctions

  • Presidential Early Career Awards for Scientists and Engineers. President of the United States of America. 2011

Courses Taught

  • CEE 461L: Chemical Principles in Environmental Engineering
  • CEE 493: Research Independent Study in Civil and Environmental Engineering
  • CEE 494: Engineering Undergraduate Fellows Projects
  • CEE 561L: Environmental Aquatic Chemistry
  • CEE 666: Aquatic Geochemistry
  • CEE 701: Graduate Colloquium
  • ENVIRON 393: Research Independent Study
  • ENVIRON 542L: Environmental Aquatic Chemistry
  • ENVIRON 666: Aquatic Geochemistry
  • ENVIRON 899: Master's Project

In the News

Representative Publications

  • Jiang, C; Castellon, BT; Matson, CW; Aiken, GR; Hsu-Kim, H, Relative Contributions of Copper Oxide Nanoparticles and Dissolved Copper to Cu Uptake Kinetics of Gulf Killifish (Fundulus grandis) Embryos., Environmental Science & Technology, vol 51 no. 3 (2017), pp. 1395-1404 [10.1021/acs.est.6b04672] [abs].
  • Schwartz, GE; Redfern, LK; Ikuma, K; Gunsch, CK; Ruhl, LS; Vengosh, A; Hsu-Kim, H, Impacts of coal ash on methylmercury production and the methylating microbial community in anaerobic sediment slurries., Environmental Sciences: Processes and Impacts, vol 18 no. 11 (2016), pp. 1427-1439 [10.1039/c6em00458j] [abs].
  • Taggart, RK; Hower, JC; Dwyer, GS; Hsu-Kim, H, Trends in the Rare Earth Element Content of U.S.-Based Coal Combustion Fly Ashes., Environmental Science & Technology, vol 50 no. 11 (2016), pp. 5919-5926 [10.1021/acs.est.6b00085] [abs].
  • Schwartz, GE; Rivera, N; Lee, S-W; Harrington, JM; Hower, JC; Levine, KE; Vengosh, A; Hsu-Kim, H, Leaching potential and redox transformations of arsenic and selenium in sediment microcosms with fly ash, Applied Geochemistry, vol 67 (2016), pp. 177-185 [10.1016/j.apgeochem.2016.02.013] [abs].
  • Diringer, SE; Feingold, BJ; Ortiz, EJ; Gallis, JA; Araújo-Flores, JM; Berky, A; Pan, WKY; Hsu-Kim, H, River transport of mercury from artisanal and small-scale gold mining and risks for dietary mercury exposure in Madre de Dios, Peru., Environmental Sciences: Processes and Impacts, vol 17 no. 2 (2015), pp. 478-487 [10.1039/c4em00567h] [abs].
  • Hsu-Kim, H; Kucharzyk, KH; Zhang, T; Deshusses, MA, Mechanisms regulating mercury bioavailability for methylating microorganisms in the aquatic environment: a critical review., Environmental Science & Technology, vol 47 no. 6 (2013), pp. 2441-2456 [10.1021/es304370g] [abs].