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Applied Geology and Geochemistry

Sarah Saslow

Sarah Saslow

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352


Sarah Saslow has over 10 years of experience in fundamental and applied geochemical research. Since joining PNNL in 2015, her work has focused primarily on the immobilization of radionuclides and co-mingled contaminants that persist in nuclear waste streams or that require remediation from the Hanford subsurface. Specifically, her research seeks to understand how radionuclide incorporation into primary and secondary mineral phases may be used to improve current immobilization and remediation strategies. Her expertise in solid phase characterization techniques, including X-ray absorption spectroscopies (XANES/EXAFS), microprobe X-ray fluorescence mapping, XPS, and XRD, is often used to extrapolate the fundamental mechanisms driving material performance. Before joining the PNNL team, Sarah was a PhD student at Northwestern University where she used nonlinear optics (second harmonic generation) to research the chemical and electrostatic properties of mineral/water interfaces and the impact these properties have on metal contaminant transport through the environment.

Research Interests

  • Solid Phase Characterization
  • Cementitious Waste Form Development
  • Geochemical Fate and Transport of Metals and Radionuclides
  • Contaminant Immobilization and Remediation
  • Interfacial Chemical Processes
  • Secondary Mineral Formation

Education and Credentials

  • Ph.D., Chemistry, Northwestern University
  • B.S., Chemistry (with Honors), Minor in Geology, University of Maryland, College Park

Affiliations and Professional Service

  • American Chemical Society
  • The Geochemical Society

Awards and Recognitions

  • 2018 – Exceptional Contribution Program Award, PNNL
  • 2017 – Outstanding Performance Award, PNNL
  • 2017 – Outstanding Performance Award, PNNL
  • 2014 – Mentorship Opportunities for Research Engagement (MORE) Best Mentor Award, Northwestern University
  • 2011 – NSF Graduate Research Fellow, Northwestern University
  • 2011 – L. Carroll King Excellence in 100-Level Teaching Award, Northwestern University
  • 2010 – Greater Institute of Washington Chemist Award, University of Maryland, College Park,
  • 2009 – ACS Analytical Chemistry Award, University of Maryland, College Park

PNNL Publications




  • Saslow S.A., W. Um, C.I. Pearce, M.H. Engelhard, M.E. Bowden, W.W. Lukens, and I.I. Leavy, et al. 2017. "Reduction and Simultaneous Removal of 99Tc and Cr by Fe(OH)2(s) Mineral Transformation." Environmental Science & Technology 51, no. 15:8635-8642. PNNL-SA-125836. doi:10.1021/acs.est.7b02278
  • Saslow S.A., W. Um, R.L. Russell, G. Wang, R.M. Asmussen, and R. Sahajpal. 2017. Updated Liquid Secondary Waste Grout Formulation and Preliminary Waste Form Qualification. PNNL-26443; RPT-SWCS-009 Rev 0. Richland, WA: Pacific Northwest National Laboratory. Updated Liquid Secondary Waste Grout Formulation and Preliminary Waste Form Qualification
  • Um W., S.A. Luksic, G. Wang, S.A. Saslow, D. Kim, M.J. Schweiger, and C.Z. Soderquist, et al. 2017. "Enhanced 99Tc Retention in Glass Waste Form using Tc(IV)-Incorporated." Journal of Nuclear Materials 495, no. C:455-462. PNNL-SA-123344. doi:10.1016/j.jnucmat.2017.09.007


  • Ohno P.E., S.A. Saslow, H. Wang, F.M. Geiger, and K.B. Eisenthal. 2016. "Phase-referenced Nonlinear Spectroscopy of the a-Quartz/Water Interface." Nature Communications 7. PNNL-SA-119274. doi:10.1038/ncomms13587

Subsurface Science & Technology