Stephen M. Roberts, PhD

Professor, Program DirectorDr. Roberts

Phone: (352) 294-4514

Fax: (352) 392-4707


Office: CEHT-Building 471, Room 12

PO Box 110885

2187 Mowry Road

Gainesville, FL 32611


Joint Appointment

College of Veterinary Medicine

Department of Physiological Sciences

College of Medicine

Department of Pharmacology and Therapeutics

College of Public Health and Health Professions

Department of Environmental & Global Health



  • B.S. Pharmacy, College of Pharmacy, Oregon State University, Corvallis OR (1973)
  • Ph.D. College of Medicine, University of Utah, Salt Lake City UT (1977)
  • NIH Postdoctoral fellow, School of Pharmacy, SUNY Buffalo, Amherst NY (1978-80)

Honors and Awards

  • UF Term Professorship, 2017
  • UF Research Foundation Professorship, 2001
  • Pfizer Award for Research Excellence, 1998

Selected Professional Activities

  • Chemical Assessment Advisory Committee, U.S. EPA, 2012-2018
  • Technical Committee on Food and Chemical Safety, ILSI North America, 2014-present
  • Science Advisory Board (Chartered), U.S. EPA, 2006-2013
  • Science Advisory Board, Natl. Center for Toxicological Research, U.S. FDA, 2006-2010
  • FIFRA Scientific Advisory Panel, U.S. EPA, 199-2005
  • Board of Scientific Counselors, National Toxicology Program, DHHS, 2002-2005

Research Interests

  • Mechanisms of drug and chemical toxicity
  • Cell defense mechanisms against toxicity
  • Toxicokinetics, particularly bioavailability of environmental contaminants
  • Risk assessment
  • Nanomaterial toxicity

Recent Grants and Contracts

  • PBET Calibration and In Vivo Feeding Trial Implementation for Skeet Range-Derived PAHs, U.S. Dept. of Defense and Alloy LLC, PI, 04/01/2018 – 10/31/2020
  • Rapid Risk Assessment of Chronic Domoic Acid Exposure in WA Razor Clam Harvestors, NIEHS, Co-I, 10-20/2017 – 3/31/2019
  • Toxicology Support Services, Florida Department of Environmental Protection, PI, 07/01/2010 – 06/30/2020
  • Influence of Particulates on Pulmonary Disposition of VOCs and SVOCs, Electrical Power Research Institute, PI, 05/01/2014 – 03/30/2017

Selected Papers

  • Roberts SM, Rohr AC, Mikheev VB, Munson J, Sabo-Attwood T: Influence of airborne particulates on respiratory tract deposition of inhaled toluene and naphthalene in the rat. Inhal. Toxicol. 30(1)::19-28, 2018. PMID: 29465005
  • Voellmy R, Zurcher O, Zurcher M, de Viraugh PA, Hall AK, Roberts SM: Targeted heat activation of HSP promoters in the skin of mammalian animals and humans. Cell Stress Chapterones 23(4):455-466, 2018. PMID: 29417383
  • Roberts SM, Munson JW, Ruby V, Lowney Y: Effects of source and concentration on relative oral bioavailability of benzo(a)pyrene from soil. Environ. Sci. Technol 50(2) 11274-11281, 2016. PMID: 27617342
  • Hinkley GK, Carpinone P, Munson JW, Powers KW, Roberts SM: Oral absorption of PEG-coated versus uncoated gold nanospheres: Does agglomeration matter? Particle Fibre Toxicol. 2015 Mar 25. PMID: 25884802