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Barry Dellinger

Patrick F. Taylor Chair of Chemistry, Louisiana State University

LSU Superfund Research Center Director, leader - Formation of Environmentally Persistent Free Radicals in Thermal Processing of Superfund Wastes





Fax:  225-578-6759




Research Interests, Expertise:

  • Origin and control of toxic combustion by-products
  • Sources/health impacts of environmentally persistent free radicals 
  • Formation and properties of combustion-generated nanoparticles
  • Surface and gas-phase mechanisms/kinetics of formation of dioxins and other air pollutants
  • Thermal treatment of hazardous wastes


Recent Publications:


Lomnicki, S., Gullett, B., Stöger,T., Kennedy, I., Diaz, J., Dugas, T.R., Varner, K., Carlin, D., Dellinger, B., and Cormier, S.A. 2013. Combustion By-Products and their Health Effects - Combustion Engineering and Global Health in the 21st Century: Issues and Challenges. International Journal of Toxicology. (accepted). Doi: 10.1177/1091581813519686.



Gehling, W., Khachatryan, L., and Dellinger, B. 2013. Hydroxyl Radical Generation from Environmentally Persistent Free Radicals (EPFRs) in PM2.5. Environ. Sci. Technol. DOI: 10.1021/es401770y. Publication Date (Web): September 4, 2013.


dela Cruz, A.L, Cook, R.L., Dellinger, B.H., Lomnicki, S.M., Donnelly, K.C., Kelley, M. A., Cosgriff, D. 2013. Assessment of Environmentally Persistent Free Radicals in Soils and Sediments from Three Superfund Sites. Environ. Sci.: Processes Impacts. DOI 10.1039/C3EM00428.


Gehling, W.A., Dellinger, B. 2013. Environmentally Persistent free Radicals and Their Lifetimes in PM2.5. Environmental Science & Technology. DOI:10.1021/es401767m.


Kelley, M.A., Hebert, V. Y., Thibeaux, T.M., Orchard, M.A., Hasan, F., Cormier, S.A., Thevenot, P.T., Lomnicki, S.M., Varner, K.J., Dellinger, B, Latimer, B.M., Dugas, T.R.  2013. Model Combustion-Generated Particulate Matter Containing Persistent Free Radicals Redox Cycle to Produce Reactive Oxygen Species. Chem. Res. Toxicol., DOI: 10.1021/tx400227s. Publication Date (Web): October 22, 2013.


Maskos, Z., Khachatryan, L., Dellinger, B. 2013. Role of the Filters in the Formation and Stabilization of Semiquinone Radicals Collected from Cigarette Smoke. Energy & Fuels, 27 (9): 5506-5512.



dela Cruz A.L., Cook R.L., Lominicki, S.M., & Dellinger, B. 2012. Effect of Low Temperature Thermal Treatment on Soils Contaminated with Pentachlorophenol and Environmentally Persistent Free Radicals.Environmental Science & Technology. Retrieved 01 June 2012.


Mahne S, Chuang GC, Pankey EA, Kiruri L, Kadowitz PJ, Dellinger B, Varner KJ. 2012. Environmentally persistent free radicals decrease cardiac function and increase pulmonary artery pressure. American Journal of Physiology 303:H1135‐H1142. 


Nganai, Shadrack, Lomnicki, S., and Dellinger, B. 2012. Formation of PCDD/Fs from Oxidation of 2-Monochlorophenol over an Fe203/silica Surface. Chemosphere.   88:371-376. doi:10.1016/j.chemosphere.2012.03.060.


Saravia J, Lee GI, Lomnicki S, Dellinger B,Cormier SA. 2012.Particulate Matter Containing Environmentally Persistent Free Radicals and Adverse Infant Respiratory Health Effects: A Review.J Biochem Mol Toxicol. Doi: 10.1002/jbt.21465. [Epub ahead of print] PMID: 23281110 [PubMed - as supplied by publisher].


Vejerano, E., Lomnicki, S., & Dellinger, B. 2012. Formation and Stabilization of Combustion-Generated, Environmentally Persistent Radicals on Ni(II)O Supported on a Silica Surface.Environmental Science & Technology 2012 46 (17), 9406-9411.


Vejerano, E., Lomnicki, S., & Dellinger, B. 2012. Lifetime of Combustion-Generated Environmentally Persistent Free Radicals on Zn(II)O  and other Transition Metal Oxides.J. Environ. Monit., 2012,14, 2803-2806.



Balakrishna, S., Saravia, J., Thevenot, P., Ahlert, T., Lominiki, S., Dellinger, B., & Cormier, S.A.2011. Environmentally persistent free radicals induce airway hyperresponsiveness in neonatal rat lungs. Particle and Fibre Toxicology.  8:11.PubMed [citation] PMID: 21388553, PMCID: PMC3061909.


Dela Cruz AL, Gehling W, Lomnicki S, Cook R, Dellinger B. 2011. Detection of environmentally persistent free radicals at a superfund wood treating sire. Environmental Science and Technology. 2011 Aug 1;45(15):6356-65. 


Dellinger B., Khachatryan L. 2011. Environmentally Persistent Free Radicals (EPFRs)-2. Are Free Hydroxyl Radicals Generated in Aqueous Solutions? Environmental Science and Technology. 2011 Nov 11;45:21. 


Kelley, M.A., Thibeaux, T., Hebert, V., Cormier, S.A., Lomnicki, S., Dillinger, B., Dugas, T. 2011.Model Particulate Matter Containing Persistent Free Radicals Exhibit Reactive Oxygen Species Production.Free Radical Biology and Medicine, 51(1):S134.


Khachatryan L, Vejerano E, Lomnicki S, Dellinger B. 2011. Environmentally Persistent Free Radicals (EPRFs). 1. Generation of Reactive Oxygen Species in Aqueous Solutions. Environmental Science and Technology. 2011. 45(19):8559-8566.


Lord, K., Moll, D., Lindsey, J.K., Mahne, S., Raman, G., Dugas, T., Cormier, S., Troxlair, D., Lomnicki, S., Dellinger, B., & Varner, K. 2011. Environmentally persistent free radicals decrease cardiac function before and after ischemia/reperfusion injury in vivo. Journal of Receptors and Signal Transduction,31(2): 157-167.


Nganai, S., Lomnicki, S., & Dellinger, B. 2011. Formation of PCDD/Fs from the Copper Oxide-Mediated Pyrolysis and Oxidation of 1,2-Dichlorobenzene.Environ. Sci. Technol., 45(3): 1034-1040.


Patterson, M.C., Keilbart, N.D., Kiruri, L.W., Thibodeaux, C.A., Lomnicki, S., Kurtz, R.L., Poliakoff, E.D., Dellinger, B., Sprunger, P.T. 2011. EPFR formation from phenol adsorption on AI203 and Ti02: EPR and EELS studies.Chemical Physics. 2012 Dec 12. doi: 10.1016/j.bbr.2011.03.031.


Vejerano, E., Lomnicki, S., & Dellinger, B. 2011. Formation and Stabilization of Combustion-Generated Environmentally Persistent Free Radicals on an Fe(III)2O3/Silica Surface.Environ. Sci. Technol., 45(2): 589-594. DOI: 10.1021/es102841s.  Wang P, Thevenot P, Saravia J, Ahlert T, & Cormier S.2011. Radical Containing Particles Activate DCs and Enhance Th17 Inflammation in a Mouse Model of Asthma.Am J Respir Cell Mol Biol. PMID: 21493781.



Fahmy, B., Ding, L., You, D., Lomnicki, S., Dellinger, B., & Cormier, S. A. 2010. In Vitro and in Vivo Assessment of Pulmonary Risk Associated with Exposure to Combustion Generated Fine Particles. Environ. Toxicology and Pharmacology, 29: 173-182.


Lomnicki ,S.M., Wu, H., Poliakoff E.D., McCarley R.L., & Dellinger B. 2010. Size-Selective Synthesis of Immobilized Copper Oxide Nanoclusters on Silica.Mat. Sci. Eng: B., 175:136-142.


Truong, H., Lomnicki S., & Dellinger B. 2010. Potential for Misidentification of Environmentally Persistent Free Radicals as Molecular Pollutants in Particulate Matter.Environ. Sci. Technol., 44(6):1933-1939. DOI: 10.1021/es902648t.


Walsh, M., Cormier, S.A., Varner, K., & Dellinger, B. 2010. By-Products of Thermal Treatment of Hazardous Waste: Formation and Health Effects.EM, April, 2010, 26-30. PMCID: PMC3368582.