• Title
    Staff Scientist/Research Staff
  • Email
  • Phone
    (925) 422-4973
  • Organization
    Not Available

Research Interests

  • Actinide chemistry
  • environmental geochemistry
  • forensic radiochemistry
  • radiochemistry

Current research involves the study of transport behavior of radionuclides in sub surfaces and ground waters, actinide-mineral interface reactions, and thermodynamics of actinides under environmental conditions.

Ph.D., Chemistry, University of the Pacific, 1995

M.S., Chemistry, Wuhan University, P.R. China, 1985

B.S., Chemistry, Wuhan University, P.R. China, 1982

P. Zhao, M. Zavarin, R. N. Leif, B. A. Powell, and A. B. Kersting, 2011. Mobilization of actinides by dissolved organic compounds at the Nevada Test Site. Applied Geochemistry 26, 308-318.

B. A. Powell, Z. Dai, M. Zavarin, Zhao, P., and A. B. Kersting, 2011. Stabilization of Plutonium Nano-Colloids by Epitaxial Distortion on Mineral Surfaces. Environmental Science & Technology 45, 2698-2703.

M. Zavarin, B. A. Powell, M. Bourbin, P. Zhao, and A. B. Kersting (2012), Np(V) and Pu(V) Ion Exchange and Surface-Mediated Reduction Mechanisms on Montmorillonite. Environmental Science & Technology 46(5), 2692–2698.

P. Zhao, Q. Hu, T. P. Rose, G. J. Nimz and M. Zavarin, 2008. Distribution of 99Tc and 129I in the vicinity of underground nuclear tests at the Nevada Test Site, Journal of Radioanalytical and Nuclear Chemistry 276 (3), 755-761.

Hu, Q. H., Rose, T. P., Zavarin, M., Smith, D. K., Moran, J. E., and Zhao, P. H., 2008. Assessing field-scale migration of radionuclides at the Nevada Test Site: "mobile" species. Journal of Environmental Radioactivity 99, 1617-1630.

Hu, Q. H., Zhao, P. H., Moran, J. E., and Seaman, J. C., 2005. Sorption and transport of iodine species in sediments from the Savannah River and Hanford Sites. Journal of Contaminant Hydrology 78, 185-205.

Xu, H. F., Wang, Y. F., Zhao, P. H., Bourcier, W. L., Van Konynenburg, R., and Shaw, H. F., 2004. Investigation of pyrochlore-based U-bearing ceramic nuclear waste: Uranium leaching test and TEM observation. Environmental Science & Technology 38, 1480-1486.

Zhao, P., Romanovski, V. V., Whisenhunt, D. W., Hoffman, D. C., Mohs, T. R., Xu, J. D., and Raymond, K. N., 1999. Extraction of plutonium by chelating hydroxypyridinone and catecholamide resins. Solvent Extraction and Ion Exchange 17, 1327-1353.

Steefel, C. I., Carroll, S., Zhao, P. H., and Roberts, S., 2003. Cesium migration in Hanford sediment: a multisite cation exchange model based on laboratory transport experiments. Journal of Contaminant Hydrology 67, 219-246.