Mary W. Carrabba
Assistant Professor of Chemistry
1250 Siskiyou Blvd.
Ashland, OR 97520
Office Phone: (541) 552-6405
Fax: (541) 552-6415
Ph.D. Analytical Chemistry 1995, The George Washington University
M.F.S. (Master of Forensic Science) 1985, The George Washington University
B.S. Criminology 1983, Southern Oregon State College
B.S. Biochemistry/Biophysics 1982, Oregon State University
Joined the SOU Chemistry Department in 2006
Founded Rogue River Spectroscopy, LLC 2005
Engineer 1997-2002, Hewlett-Packard Analytical & Development Labs
Chemist 1991-1997, FBI Laboratory
Visiting Scientist 1988-1990, FBI Forensic Science Research & Training Center
General Chemistry Laboratory (Ch 204/5/6)
Forensic Investigation (Ch 300)
Instrumental Analysis (Ch 425/525) with Laboratory (Ch 426/526)
Advanced Instrumental Analysis Laboratory (Ch 427)
Vibrational (IR and Raman) spectroscopy
Microscopy and microspectroscopy (UV-visible, IR, and Raman)
Professional Organizations, Affiliations, and Activities
Society for Applied Spectroscopy
Editor, Spectroscopists' Calendar column, Applied Spectroscopy
Organizing Forensic Technical Section
Awards Committee, chair-elect
Baltimore-Washington Section Chair 1995-96
Governing Board member 2002-05
Current research and publications
Current research: Analytical characterization of adhesive labels for use in counterfeit and diverted pharmaceutical case work.
This project is being conducted in cooperation with the Food and Drug Administration's (FDA's) Forensic Chemistry Center (FCC). In the majority of suspect counterfeit and diverted pharmaceutical product cases, the focus of analysis is on the actual product (e.g. tablets and capsules). In cases involving products suspected of being counterfeited, the majority of methods used can reveal differences in the product formulation and level of active. This allows for differentiation between the authentic product and the suspect counterfeit product and this information can ultimately be used to source suspect product formulations. The analysis of diverted products is more difficult, since in most cases, the product is authentic and the focus of analysis shifts to product degradants. If the diverted product has been poorly handled or stored the number and levels of degradants present in a suspect product may be higher; however, in many cases of product diversion, the products exhibit little or no evidence of degradation. In these cases the focus of the examination turns to the packaging components.
In cases of product diversion, chemical analysis of the packaging components can provide evidence that a product has been mishandled, relabeled or resealed. Methods are being developed to analyze product labels and their adhesives which employ image analysis (IA), optical microscopy, Fourier transform infrared (FT-IR) and Raman spectroscopy, and scanning electron microscopy (SEM) with energy dispersive x-ray (EDX) analysis. It is anticipated that the physical and chemical information obtained from these methods can be used to detect and source counterfeit and diverted products based on the adhesive labels present on the packages.
Publications: Mary W. (Tungol) Carrabba
Tungol, M.W., "Infrared Microscopy as a Failure Analysis Tool in the Thermal InkJet Cartridge Industry", Microsc. Microanal.5 (Suppl 2: Proceedings), 62-63 (1999).
Kirkbride, K.P. and Tungol, M.W., "Infrared Microspectroscopy of Fibres," in Forensic Examination of Fibres, 2nd Edition, J. Robertson and M. Grieve, Eds., Taylor & Francis, London (1999), pp. 179-222.
Lewis, I.R., Daniel, N.W., Jr., Chaffin, N.C., Griffiths, P.R., and Tungol, M.W., "Raman Spectroscopic Studies of Explosive Materials: Towards a Fieldable Explosives Detector," Spectrochim. Acta A51, 1985-2000 (1995).
Tungol, M.W., Bartick, E.G., and Montaser, A., "Forensic Examination of Synthetic Textile Fibers by Microscopical Infrared Spectrometry," in Practical Guide to Infrared Microspectroscopy, H. Humecki, Ed., Marcel Dekker, New York (1995), pp. 245-285.
Tungol, M.W., Bartick, E.G., and Montaser, A., "Polarized Infrared Microscopical Analysis of Single Poly(ethylene terephthalate) Fibers," in Advances in Forensic Sciences