Program management, laboratory management, project coordination, grants administration, environmental chemistry, analytical chemistry, mass spectrometry, GC/MS analysis, capillary gas chromatography, trace organic analysis, trace metals analysis, analytical methods development, QA/QC principles and methods, laboratory information management systems, biomonitoring techniques, environmental sampling and analytical strategies, environmental affairs and regulations, and environmental communications.

• Elected to Alpha Chi (National Honor Society), 1970.

• Consulting Chemist, NOAA Hazardous Materials Response Project, Seattle, WA, 1982-84.

• Special Consultant for Hazardous Materials, New Orleans Fire Department, 1983-88.

• Member, Executive Committee, New Orleans Chromatography/Analytical Discussion Group, LA-Section ACS, 1984-86.

• Member, Southern Louisiana Drinking Water Study Commission, 1984-88.

• Member, Mayor's Advisory Council on Hazardous Materials, City of New Orleans, 1984-88.

• S&WBNO Representative, Orleans Parish Local Emergency Planning Committee, 1988.
   
• University of New Orleans Outstanding Staff Award, May 2005.     

• Environmental Biomonitoring Research Program," I.R. DeLeon and J.B. Ferrario, co-principal investigators, 1983-1988 ($513,681).

• Louisiana Cancer and Lung Trust Fund, "Volatile Synthetic Organics in Mothers' Milk," K.S. Mandhare, principal investigator, and I.R. DeLeon, co-investigator, 1987-1988 ($25,000).

• UNO Research Council Award, "Endogenous Neurodegenerative Toxins in the Aged Central Nervous System," I.R. DeLeon, principal investigator; Chandan Prasad, co-investigator, 1987-1988 ($3,875).

• Louisiana Cancer and Lung Trust Fund, "Carcinogens in Rural Groundwater and Human Blood," I.R. DeLeon, principal investigator, 1986-1987 ($24,958).

• Ruetgers-Nease Chemical Company, "GC/MS Analysis of Target Chemicals in Environmental Samples," I.R. DeLeon, principal investigator, 1984-1986 ($15,850).

• ARAMCO Services Company, "An Environmental Monitoring Program for Petroleum Hydrocarbons and Metals along the Arabian Gulf Coastline," I.R. DeLeon, principal investigator, 1984-1985 ($208,000).

• American Petroleum Institute, "Polynuclear Aromatic Hydrocarbon Intercalibration Program," Project EH-21 CBS, I.R. DeLeon, principal investigator, 1984-1985 ($40,000).

• NOAA and Institute for Environmental Studies, LSU, Baton Rouge, LA, "Survey of Organic Pollutants in Lake Calcasieu Biota and Sediments," I.R. DeLeon, principal investigator, 1984-1985 ($8,000).

• Tulane University Medical Center, Department of Dermatology (Dr. James S. Storer), "GC/MS Determination of PAHs and Metabolites in Blood and Urine Specimens," I.R. DeLeon, principal investigator, 1984-1985 ($7,125).  

J.L. Laseter, I.R. DeLeon, and P.C. Remele, "Determination of Mirex in Fish by Gas Chromatography and Gas Chromatography-Mass Spectrometry-Computer System," Anal. Chem., 50:1169-1172 (1978).

I.R. DeLeon, V. Warren, and J.L. Laseter, "Quantitative Analysis of Trace Levels of Mirex in Edible Fish by Mass Spectrometry," Quantitative Mass Spectrometry in the Life Sciences, Vol. 2, pp. 483-492 (1978).

J. Cooper, W.H. Dennis, I.R. DeLeon, and J.L. Laseter, "Catalytic Dechlorination of Organochlorine Compounds: Mass Spectral Identification of Aldrin and Dieldrin Products," Chemosphere, 4:191-199 (1979).

I.R. DeLeon, M.A. Mayberry, E.B. Overton, C.K. Raschke, P.C. Remele, C.F. Steele, V.L. Warren, and J.L. Laseter, "Rapid Gas Chromatograpic Method for Volatile and Semivolatile Organochlorine Compounds in Soil and Chemical Waste Disposal Site Samples," J. Chromatog. Sci., 18:85-88 (1980).

I.R. DeLeon, N.J. Brown, J.P. Cocchiara, S.K. Miles, J.L. Laseter, E.H. Kremer, III, and L. Makk, "Determination of Trace Levels of Hexachlorocyclopentadiene and Octachlorocyclopentene in Body Fluids," J. Anal. Toxicol.,  4:314-317 (1980).

I.R. DeLeon, P.C. Remele, S.K. Miles, and J.L. Laseter, "Glass Capillary Columns in the Gas Chromatographic and Gas Chromatographic-Mass Spectrometric Determination of Trace Levels of Kepone in Natural Waters," Anal. Lett., 13(A6), 503-515 (1980).  

I.R. DeLeon, E.B. Overton, G.C. Umeonyiagu, and J.L. Laseter, "Characterization of Azaarenes in IXTOC-1 Oil by Gas Chromatography and Gas Chromatography-Mass Spectrometry," Chapter 12, in L.H. Keith (ed), Energy and Environmental Chemistry, Vol. 1, Ann Arbor Science Publishers, Ann Arbor, MI,1982, pp. 233-248.

J.L. Laseter and I.R. DeLeon, "Exchange of Comments on the Quantitative Determination of Mirex and its Degradation Products by Capillary Gas Chromatography/Mass Spectrometry," Anal. Chem., 54:594-595 (1982).

I.R. DeLeon, E.B. Overton, and J.L. Laseter, "The Role of Analytical Chemistry in a Toxic Substance Spill into the Aquatic Environment," in J. Albaiges (ed), Analytical Techniques in Environmental Chemistry, Vol. 2, Pergamon Press, Oxford, 1982, pp. 1-17.

I.R. DeLeon, J.N. Brown, J.P. Cocchiara, S.G. Cruz, and J.L. Laseter, "Trace Analysis of 2,6-Disubstituted Anilines in Blood by Capillary Gas Chromatography," J. Anal. Toxicol., 7:185-187 (1983).  

J.S. Storer, I. DeLeon, L.E. Milliken, J.L. Laseter, and C. Griffing, "Human Absorption of Crude Coal Tar Products," Arch. Dermatol., 120:874-877 (1984).

J.B. Ferrario, G.C. Lawler, I.R. DeLeon, and J.L. Laseter, "Volatile Organic Pollutants in Biota and Sediments of Lake Pontchartrain," Bull. Environ. Contam. Toxicol., 34:246-255 (1985). 

J.B. Ferrario, I.R. DeLeon, and R.E. Tracy, "Evidence of Toxic Anthropogenic Chemicals in Human Thrombogenic Coronary Plaques," Arch. Environ. Contam. Toxicol., 14:529-534 (1985).

I.R. Politzer, I.R. DeLeon, and J.L. Laseter, "Impact on Human Health of Petroleum in the Marine Environment," API Mongraph (ISBN: 0-89364-055-7), American Petroleum Institute, Washington, DC, 1985, 162 pp.

J.A. McFall, S.R. Antoine, and I.R. DeLeon, "Organics in the Water Column of Lake Pontchartrain," Chemosphere, 14:1253-1265 (1985).

J.A. McFall, S.R. Antoine, and I.R. DeLeon, "Base-Neutral Extractable Organic Pollutants in Biota and Sediments from Lake Pontchartrain," Chemosphere, 14:1561-1569 (1985).

S.R. Antoine, I.R. DeLeon, and R.M. O'Dell-Smith, "Environmentally Significant Volatile Organic Pollutants in Human Blood," Bull. Environ. Contam. Toxicol., 36:364-371 (1986).

C.J. Byrne and I.R. DeLeon, "Trace Metal Residues in Biota and Sediments from Lake Pontchartrain ," Bull. Environ. Contam. Toxicol., 37:151-158 (1986).

I.R. DeLeon, C.J. Byrne, E.A. Peuler, S.R. Antoine, J. Schaefer, and R.C. Murphy, "Trace Organics and Heavy Metal Pollutants in the Mississippi River," Chemosphere, 15:795-805 (1986).

C.J. Byrne and I.R. DeLeon, "Contributions of Heavy Metals from Municipal Runoff to the Sediments of Lake Pontchartrain, Louisiana," Chemosphere, 16:2579-2583 (1987).

I.R. DeLeon, J.B. Ferrario, and C.J. Byrne, "Bioaccumulation of Polynuclear Aromatic Hydrocarbons by the Clam, Rangia cuneata, in the Vicinity of a Creosote Spill," Bull. Environ. Contam. Toxicol., 41:872-879 (1988).

I.R. DeLeon, "Draft Plan for Development of a Stormwater Management Program for the Sewerage and Water Board of New Orleans," S&WBNO, New Orleans, LA, 1988, 39 pp.

J.M. Rainey, F.D. Groves, I.R. DeLeon, and P.E. Joubert, "Groundwater and Oilfield Waste Dumps: A Study in Vermillion Parish," J. La. State Med. Soc., 142:34-40 (1990).

K.S. Mandhare, J.E. Field, I.R. DeLeon, and W.J. Castille, "Volatile Synthetic Organics in Mothers' Milk,"  J. La. State Med. Soc., 143:31-36 (1991).

J.B. Ferrario, I.R. DeLeon, and E.A. Peuler, "Bioaccumulation of Chemical Markers as a Means for the Field Detection and Verification of Organophosphorous Warfare Agents," Environ. Sci. Technol., 28:1893-1897 (1994).

I.R. DeLeon, L.V. McCarthy, C.K. Raschke, E.B. Overton, and J.L. Laseter. "Characterization of Azaarenes in IXTOC-I Oil by Gas Chromatography and Gas Chromatography/Mass Spectrometry," Symposium on Assessment of the Environmental Impact of Accidental Spills in the Oceans, Second Chemical Congress of the North American Continent, Las Vegas, Nevada, August 1980.

I.R. DeLeon. "The Pentachlorophenol Spill--Sampling Strategies and Analytical Methodologies," New Orleans Chromatography-Analytical Discussion Group Meeting, New Orleans, LA, October 1980.

I.R. DeLeon. "The Bayou Bonfouca Creosote Spill--Analytical Results and Chemistry Support," Regional Response Team Meeting-Coastal Region VI, Dallas, TX, February 4-5, 1981.

E.B. Overton, I.R. DeLeon, and J.L. Laseter. "Analysis of Polar Compounds and Products of the Oxidative Weathering of IXTOC-I Oil and Selected Samples," International Symposium IXTOC-I, Mexico City, Mexico, June 1982.

I.R. DeLeon. "Approaches to Air Sampling at a Hazardous Materials Spill Incident," NOAA HAZMAT Project Training Session, Santa Barbara, CA, December 1982.

I.R. DeLeon, M.W. Antoine, R. Balan, S.R. Antoine, J.B. Ferrario, and J.L. Laseter. "GC and GC/MS Screening Test Approach to the Measurement of Environmental Chemicals," 14th Annual Symposium on Applied Analytical Chemistry, New Orleans Chromatography-Analytical Discussion Group, New Orleans, LA, May 1983.

I.R. DeLeon, C.J. Byrne, S.R. Antoine, and J.L. Laseter. "Trace Analysis of Ambient Organic Vapors by Sorbent Trapping and Capillary GC/MS Techniques," 15th annual Symposium on Applied Analytical Chemistry, New Orleans Chromatography-Analytical Discussion Group, New Orleans, LA, April 1984.

I.R. DeLeon and S.R. Antoine, "Measurement and Evaluation of Toxic Chemical Residues in Humans," 4th Annual Aspen Conference: Frontiers in Allergy, Aspen, CO, July 1986.

K.S. Mandhare, S.R. Antoine, I.R. DeLeon, and J.T. Cardwell. "Volatile Synthetic Organics in Human Milk," 82nd Annual Meeting of the American Dairy Science Association, Columbia, MO, June 1987.

R.W. Handy, J.W. Lodge, and I.R. DeLeon. "Identification of a Mirex Impurity," The Pittsburg Conference and Exposition on Analytical Chemistry and Applied Spectroscopy, New Orleans, LA, February 1988.

I.R. DeLeon and A.E. Granados. "Analytical Requirements of NPDES and LWDPS Permits for Drilling Muds and Produced Water," 1991 SPE/AADE Forum on Optimizing Solids Control Technology for Today's Environment, Lafayette, LA, February 1991.

I.R. DeLeon and J.B. Ferrario. "When All Else Fails: Identification of a Mirex Impurity by Interpretation of Mass Spectral Data Using Basic Principles," 21st Annual Symposium on Advances in Applied Analytical Chemistry, New Orleans Chromatography-Analytical Discussion Group, New Orleans, LA, May 1991.

M.A. Tarr, C.J. O’Connor, and I. DeLeon, “Summer Outreach Program for High School Students and Teachers,” poster presentation, DARPA/AMRI 2003 Review, New Orleans, LA, February, 26-28, 2003.

M.A. Tarr, C.J. O'Connor, and I. DeLeon, "Summer Outreach Program for High School Students and Teachers," 225th ACS National Meeting, New Orleans, LA, March 23-27, 2003.

M. Tarr, C.J. O'Connor, and I. De Leon, “Summer Research Programs for High School Students and Teachers and Undergraduate Students, 55th Southeast Regional Meeting of the American Chemical Society (SERMACS-2003), Renaissance Atlanta Hotel, Atlanta, GA, November 16-19, 2003.

M.A. Tarr, C.J. O’Connor, and I. DeLeon, “Summer Research Opportunities in Nanoscale Science for High School Students/Teachers and Undergrads,” poster presentation, DARPA-UNO/AMRI Symposium, New Orleans , LA, February 19-20, 2004.

M.A. Tarr, J. Anderson, W.L. Zhou, I. DeLeon, and C.J. O'Connor, "High School Internships in Nanomaterials:  Putting High School Teachers and Students at the Cutting Edge of Nanomaterials Research," 227th ACS National Meeting, Anaheim, CA, March 28-April 1, 2004.