Earth Scientist
Earth Scientist


Nancy Avalos joined Pacific Northwest National Laboratory in June 2017 as an intern and is currently an earth scientist in the Subsurface Science and Technology group. Since starting at PNNL, Nancy’s work has been primarily in material performance for use in groundwater remediation and low-activity waste solidification.

Research Interest

  • Cementitious Materials
  • Geochemistry
  • Laboratory Quality Assurance
  • Remediation Technologies
  • SigmaPlot
  • Waste Management
  • Wasteform Development
  • X-ray Diffraction Analysis


  • MS in environmental science, Washington State University
  • BS in environmental science, Washington State University



  • Ewing R.G., M.K. Nims, K.A. Morrison, G.L. Hart, N.M. Avalos, and E.H. Denis. 2022. "Vapor detection and vapor pressure measurements of fentanyl and fentanyl hydrochloride salt at ambient temperatures." Analyst 147. PNNL-SA-174452. doi:10.1039/d2an01149b
  • Reiser J., A.R. Lawter, N.M. Avalos, J.F. Bonnett, B.J. Riley, S. Chong, and N.L. Canfield, et al. 2022. "Review and Experimental Comparison of the Durability of Iodine Waste Forms in Semi-Dynamic Leach Testing." Chemical Engineering Journal Advances 11. PNNL-SA-165785. doi:10.1016/j.ceja.2022.100300


  • Adiga P.P., N. Doi, C. Wong, D.M. Santosa, L. Kuo, G.A. Gill, and J.A. Silverstein, et al. 2021. "The Influence of Transitional Metal Dopants on Reducing Chlorine Evolution During the Electrolysis of Raw Seawater." Applied Sciences 11, no. 24:Art. No. 11911. PNNL-SA-165321. doi:10.3390/app112411911
  • Avalos N.M., T. Varga, S.T. Mergelsberg, J.A. Silverstein, and S.A. Saslow. 2021. "Behavior of iodate substituted ettringite during aqueous leaching." Applied Geochemistry 125. PNNL-SA-152089. doi:10.1016/j.apgeochem.2020.104863
  • Gillispie E.C., S.T. Mergelsberg, T. Varga, S.M. Webb, N.M. Avalos, M. Snyder, and A. Bourchy, et al. 2021. "Competitive TcO4-, IO3-, and CrO42- Incorporation into Ettringite." Environmental Science & Technology 55, no. 2:1057-1066. PNNL-SA-151816. doi:10.1021/acs.est.0c06707


  • Asmussen R.M., S.K. Cooley, and N.M. Avalos. 2020. Round Robin Summary for ASTM Method C1733. PNNL-30717. Richland, WA: Pacific Northwest National Laboratory. Round Robin Summary for ASTM Method C1733
  • Lawter A.R., N.M. Avalos, J.F. Bonnett, N.L. Canfield, M.E. Bowden, L.M. Seymour, and S.A. Saslow, et al. 2020. Iodine Waste Form Corrosion: PNNL Summary Testing Report. PNNL-30127. Richland, WA: Pacific Northwest National Laboratory. Iodine Waste Form Corrosion: PNNL Summary Testing Report
  • Wang G., J.E. Szecsody, N.M. Avalos, N. Qafoku, and V.L. Freedman. 2020. "In situ precipitation of hydrous ferric oxide (HFO) for remediation of subsurface iodine contamination." Journal of Contaminant Hydrology 235. PNNL-SA-147880. doi:10.1016/j.jconhyd.2020.103705


  • Asmussen R.M., J.V. Ryan, J. Matyas, J.V. Crum, J. Reiser, N.M. Avalos, and E.M. McElroy, et al. 2019. "Investigating the Durability of Iodine Waste Forms in Dilute Conditions." Materials 12, no. 5:Article No. 686. PNNL-SA-140280. doi:10.3390/ma12050686
  • Saslow S.A., S.N. Kerisit, T. Varga, K.C. Johnson, N.M. Avalos, A.R. Lawter, and N. Qafoku. 2019. "Chromate Effect on Iodate Incorporation into Calcite." ACS Earth and Space Chemistry 3, no. 8:1624-1630. PNNL-SA-141592. doi:10.1021/acsearthspacechem.9b00047