The use of groundwater age-dating, isotope biogeochemistry, and reactive transport modeling to develop better tools for water resource management, especially with regards to groundwater nitrate. The source, transport and fate of metals, radionuclides and nutrients in natural waters and sediments. Inductively-coupled plasma mass spectrometry (ICPMS), including isotope-dilution methods for accurate and precise concentration measurements and isotopic composition studies to elucidate metal sources and geochemical processes.
Singleton M. J., B. K. Esser, J. E. Moran, G. B. Hudson,
W. W. McNab, and T. Harter, "Saturated Zone Denitrification: Potential
for Natural Attenuation of Nitrate Contamination in Shallow Groundwater under
McNab W. W., Singleton M. J., J. E. Moran, and B. K. Esser, "Assessing
the Impact of Animal Waste Lagoon Seepage on the Geochemistry of an Underlying
Moore K., Ekwurzel B. E., B. K. Esser, G. B. Hudson, and
J. E. Moran, "Sources of Groundwater Nitrate Revealed Using Residence
Time and Isotope Methods.
Carle S. F., B. K. Esser, and J. E. Moran, "High-Resolution
Simulation of Basin Scale Nitrate Transport Considering Aquifer System Heterogeneity,"
Carle, S. F., A. F. B. Tompson, W. W. McNab, B. K. Esser,
G. B. Hudson, J. E. Moran, H. R. Beller, and S. R. Kane, "Simulation
of Nitrate Biogeochemistry and Reactive Transport in a California Groundwater