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Shawki Ibrahim

Shawki A. Ibrahim
Professor Emeritus

Phone: (970) 491-1593
Fax: (970) 491-0623
Office: 339 Molecular and Radiological Biosciences Building



Research Interests

Dr. Ibrahim's research interests pertain to the measurement, distribution and transport of natural and man-made radionuclides in the environment and in humans. Additionally, he is interested in the applications of radioactive tracers to study the kinetics of chemical, physical and biological systems. Some of his research activities are performed around nuclear facilities operated by the U.S. Department of Energy (DOE). Recently, he has evaluated the distribution and environmental transport of radionuclide contamination at the Rocky Flats site. This work was coupled with a bioassay program designed to validate models that predict dose and risk to the general public. He is also investigating the relative role of wind and water erosion and vertical migration on plutonium transport at several DOE sites. This information will be used to develop site-specific models for the estimation of human and ecological risks associated with plutonium and other transuranic contaminants. Graduate students from the department's M.S. and Ph.D. program are actively involved in the ongoing research projects.

ERHS has established a specific area of specialization in Radiochemistry within the Department's graduate program. The program's main goal is to appropriately educate and train a new generation of radichemists through the sponsorship of the DOE. ERHS is currently recruiting qualified students for M.S. and Ph.D. Degrees. B.S. graduates with strong chemistry and physics backgrounds are encouraged to apply.

Selected Publications

  • Ibrahim, S.A., G.M. Warren, F.W. Whicker and D.W. Efurd. Plutonium in Colorado residents: Results of autopsy bone samples collected during 1975-1979. Health Physics J., 82(2): 165-177, 2002.
  • Ibrahim, S.A. and F.W. Whicker. Assessment of ecological and human exposure from radioactivity at Rocky Flats in Colorado, USA. Proceeding of the International Conference on Radioactivity in the Environment. Monaco 1-5 September, 2002.
  • Ibrahim, S.A. and S.L. Simon. Natural radionuclide contents in human whole-body ashes. J. Radioanalytical and Nuclear Chemistry. 243(2):483-490, 2000.
  • Chandler, S.Z., S.A. Ibrahim and J.G. Campbell. Comparison of scintillation detection efficiencies of depleted uranium (DU) in wounds. J. Radioanalytical and Nuclear Chemistry. 243(2):451-457, 2000.
  • Ibrahim, S.A. and W.R. Salazar. Physiochemical speciation of americium in soilsfrom Rocky Flats, Colorado, USA. J. Radioanalytical and Nuclear Chemistry. 243(2):347-351, 2000.
  • Webb, S.B., S.A. Ibrahim and F.W. Whicker. Inventory estimates of 239, 240Pu in soil east of Rocky Flats, Colorado. Technology, Vol. 7:497-507, 2000.
  • Hulse, S.E., S.A. Ibrahim, J.M. Stone and F.W. Whicker. Concentrations of 232Th, 226Ra, and 40K in soil around Rocky Flats and along Colorado's front range corridor. Technology, Vol. 7:415-430, 2000.
  • Mailing Address

    Environmental & Radiological Health Sciences
    1618 Campus Delivery
    Colorado State University
    Fort Collins, CO 80523
    Phone: (970) 491-5222
    Fax: (970) 491-0623
    Email: ERHSDepartment