Peggy O'Day

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Professor
School of Natural Sciences
Office
Phone 
209-228-4338
Location 
S&E 1 Bldg., RM 216
Lab
Location 
S&E 1 Bldg., RM 225
Research Interests 

O'Day's research is in the area of mineral-aqueous interface geochemistry as it relates to the chemistry and mobility of inorganic chemical species in the environment. She applies a variety of spectroscopic and microscopic techniques, in particular synchrotron X-ray methods, to studies of contaminant cycling, bioavailability, and remediation in natural systems.

Current research projects include:

  • Arsenic speciation, cycling and bioavailability
  • Environmental influences on mercury speciation and methylation
  • Novel methods for remediation of soils and sediments through application of reactive amendments
  • Strontium and cesium uptake and release by weathering products related to radionuclide contamination at Hanford, WA
  • Mechanisms and rates of abiotic and biotic uranium oxidation linked to nitrogen and iron cycling
Education 
  • Ph.D., 1992 — Stanford University
  • M.S., 1984 — Cornell University
  • B.S., 1981 — University of California, Davis