Hue-Hwa Hwang (Ellen), Ph.D.
Director, Sediment Processing Lab
Sediment Processing
Quaternary Geology Section
Geologic Mapping and Hydrogeology Center
Phone: 217-244-9876 •
Fax: 217-333-2830
E-mail: hwang@isgs.uiuc.edu

Current Research Projects
- Effect of Urban Growth and Land Usage on Groundwater Quality in
McHenry County Based on Chemical and Isotopic Assessment
- Application of nitrogen and oxygen isotopes for determining dominant
sources of nitrate in karst aquifers of southwestern Illinois
- Application of Nitrate and Oxygen Isotopes to Identify Sources of
Nitrate
- Chronic Sodium-Chloride Contamination in Groundwater and Surface Water
in Urban and Industrial Areas: Investigation of Geochemical Techniques
to Determine the Sources of These Contaminants

Research Interests
- Application of environmental isotopes (H/D, O, C, N, and Tritium) to
environmental and geochemical problems
- Origin of saline groundwater in southern Illinois
- Effect of fluid mixing and water-rock interactions on groundwater
geochemistry and diagenesis of aquifer-rocks
- Source identification of nitrates in groundwater and surface water
using nitrogen and oxygen isotopes

Professional Affiliations
- Geological Society of America
- American Geophysical Union
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