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Félix Román,Ph.D.
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Analytical Chemistry: Environmental Analysis
Post Doctoral, summers 1991 and 1996, Armed Forces Institute of Pathology in Washington, D.C.
Ph.D. in Chemistry, May 1989, University of Nebraska-Lincoln
M.S. in Chemistry, May 1986, University of Nebraska-Lincoln
B.S. in Chemistry, May 1981, Inter American University of Puerto Rico at San Germán
Email: roman_felix@yahoo.com
Office: Q-145
Ext. 3762 |
Certifications
U.S. Environmental Protection Agency, Certification of Drinking Water Laboratories for Chemistry Inorganic and Organic parameters, May 2006
Recent training
Liquid Chromatography Mass Spectrometry: Fundamentals and Applications, American Chemical Society Short Course, August 2005
Advanced Liquid Chromatography Mass Spectrometry Applications, LC/MS Limited, Durham North Carolina, January 2006
Research projects while attending graduate school and postdoctoral work
Armed Forces Institute of Pathology; June to August 1991 and 1996.
Developed analytical methodology for the determination of trace amounts of aluminum, cadmium, iron and lead in human tissues using microwave acids dissolution, Zeeman Furnace Atomic Absorption Spectrophotometry (ZFAAS) and Inductive Coupled Plasma Optical Emission Spectroscopy (ICP-OES).
University of Nebraska-Lincoln; June 1983 to may 1989.
Developed analytical methodology for the determination of trace elements in biological fluids and tissues using ion exchange chromatography and neutron activation analysis. Studied the effects of ionizing radiation on liquid aqueous biomolecules solutions by means of identifying the degradation products using High Performance Liquid Chromatography.
Studied the inversion to retention ratio of the hot homolytic substitution reactions of the energetic chlorine for Halogen substitution on dihaloalkanes by means of the separation of the radioactive products using capillary gas chromatography.
Current Research Interests
Dr. Roman’s group is involved in a variety of research projects, mostly related with environmental analysis. These include:
- The use of crumb rubber for the removal of organic solvents, toxic metals and antimicrobials from aqueous solutions.
- The analysis of toxic metals such as Arsenic, Lead, Cadmium, Chromium and mercury etc. at trace metals in environmental (water, soil and biological tissues) and food samples using Atomic Absorption Spectroscopy (AAS) and Inductive Coupled Plasma-Optical Emission Spectroscopy (ICP-OES).
- The determination of toxic ions in drinking and bottled water samples using Ion Chromatography (IC).
- The determination of volatile and non-volatile compounds in environmental samples (pesticides, explosives, antimicrobials and other contaminants) using gas Chromatography-Mass Spectrometry (GC-MS) and Liquid Chromatography — Mass Spectrometry (LC-MS).
Laboratory Facilities
Our laboratory is equipped with several instruments, which are used in the above projects and a brief description of these systems and their capabilities follows:
- A Bruker Daltonics LC/MS/MS system equipped with an Esquire 6000 Mass Spectrometer coupled to an Agilent 1100 HPLC system with diode array detection. This system is also equipped with electrospray, atmospheric pressure chemical ionization and atmospheric photo ionization sources. This system is excellent for separation, identification and quantification of non-volatile or thermally labile compounds at trace levels.
- Finnigan Polaris GC/MS/MS system equipped with direct insertion probe and electron impact and chemical ionization modes. This system is capable of performing gas chromatography- tandem Mass Spectrometry up to n10 in volatile (< 450 °C) of thermally stable compounds. This system was purchased ($100,000) with a Grant from USDA-HIS program.
- Leeman Labs Inductive Coupled plasma-Optical Emission Spectroscopy system equipped with a high resolution Echelle Monochromator and auto sampler. The system is capable if performing multi-elemental analysis at trace levels (> 100 ppb).
- Two Perkin Elmer Atomic Absorption Systems equipped with graphite furnace and auto-sampler. The systems are excellent for the analysis of metals at trace levels (1-100 ppb depending on nature of element and matrix of sample).
- Dionex 320 Ion Chromatograph equipped with a state of the art electrolytically self-regenerating suppressor and an eluent generator system (EG 40). This is excellent for the detection of anions at trace levels (ppm-ppb levels) Purchased with Grant from USDA-HSI.
- A Mars 5 CEM microwave digestion system equipped with high pressure Teflon digestion vessels. This system is excellent for the fast acid digestions of solid samples. It was purchased with a grant from the Solid Waste Authority-Common Wealth of Puerto Rico.
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