Skip to main content
Faculty of Community Services

Eric Liberda




416-979-5000, ext. 3020

Email Address:


  • Toxicology
  • Exposure assessment
  • Risk assessment
  • Aboriginal health
  • Inhalation exposure


I earned both an undergraduate and master's degree in Environmental Health from the University of Waterloo and completed a second master’s in Toxicology at the Royal Melbourne Institute of Technology in Australia. I was awarded with a doctorate of Environmental Medicine (Environmental Health Sciences, Exposure Assessment and Toxicology) from the Department of Environmental Medicine at the New York University School of Medicine.

I play an active role in the Society of Toxicology, which is where I currently serve on the Nanotoxicology Specialty Section. I also serve on the Toxicology Specialty Section of the American Industrial Hygiene Association.

My goal is to make a mark by improving human health and human health policy. My focus is on science-based policy and regulatory guideline matters, which are informed by my primary toxicological research. My work to date has resulted in publications and grants that strive to protect Canadians from the adverse health effects of toxicants such as pesticides, lead, coal combustion products, nanoparticles and polychlorinated biphenyls (PCBs). Ultimately, I move my research findings into action by applying the results to inform and develop new policies and guidelines that protect human health.

Research Interests:

Research projects:

  • First Nation environmental health: Inhalation exposure
  • Environmental health: Dietary human health risk assessment

Current Courses:

  • ENH 220: Foundations of Pathophysiology
  • ENH 825: Risk Assessment
  • OHS 322: Introductory Toxicology
  • OHS 422: Advanced Toxicology

Selected Publications:

Journal articles:

  • Liberda EN, Tsuji LJ, Peltier R. Mining in Subarctic Canada: Airborne PM2.5 Metal Concentrations in Two Remote First Nations Communities. Chemosphere. Vol. 139(2015):452-460, DOI:
  • Reyes ES, Liberda EN, Tsuji LJ. 2015. Human Exposure to Soil Contaminants in Subarctic Ontario, Canada. International Journal of Circumpolar Health. Vol. 28;74:27357, DOI: 10.3402/ijch.v74.2735.
  • Tam B, Tsuji LJS, Martin ID, Liberda EN, Ayotte P, Cote S, Dewailly E, Nieboer E.  2015. Iodine status of Eeyou Istchee community members of northern Quebec, Canada, and potential sources. Environmental Science: Processes & Impacts.  Vol. 17(4):844-53, DOI: 10.1039/C4EM00674G.
  • Juric AM, Meldrum R, Liberda EN. 2015. Achieving Control of Occupational Exposures to Engineered Nanomaterials. Journal of Occupational & Environmental Hygiene.  DOI: 10.1080/15459624.2015.1011329.
  • Cuevas AK, Niu J, Zhong M, Liberda EN, Ghio A, Qu Q, Chen LC. 2015. Metal rich particulate matter impairs acetylcholine-mediated vasorelaxation of microvessels in mice. Particle and Fibre Toxicology.Vol. 4;12:14 doi: 10.1186/s12989-014-0077-x. 2015.
  • Liberda EN, Tsuji JS, Martin ID, Ayotte P, Dewailly E, Nieboer E. 2014. The Complexity of Hair/Blood Mercury Concentration Ratios and Its Implications. Environ Res. Vol. 134:186-294.
  • Charania N, Martin ID, Liberda EN, Meldrum R, Tsuji JS.2014. Bird harvesting practices and knowledge, risk perceptions, and attitudes regarding avian influenza among Canadian First Nations subsistence hunters: implications for influenza pandemic plans. BMC Public Health. 14 :1113.
  • Liberda EN, Cuevas AK, Qu Q, Chen LC. The Acute Effects of Inhaled Nickel Nanoparticles. 2014. Inhalation Toxicology. Vol. 26(10):588-97.
  • Charania N, Tsuji JS, Martin ID, Liberda EN, Cote S, Ayotte P, Dewailly E, Nieboer E. 2014. An examination of traditional foods and smoking as cadmium sources among the nine First Nations of Eeyou Istchee, Northern Quebec, Canada. Environmental Science: Processes & Impacts (Formerly JEM). DOI: 10.1039/c4em00064a.
  • Jingping Niu, Eric N. Liberda , Song Qu , Xinbiao Guo , et al. 2013. The Role of Metal Components in the Cardiovascular Effects of PM2.5. PLOSOne. DOI: 10.1371/journal.pone.0083782.
  • Liberda EN, Tsuji JS, Martin ID, Cote S, Ayotte P, Dewailly E, Nieboer E. 2014. Plasma Concentrations of Persistent Organic Pollutants in the Cree of Northern Quebec, Canada: Results from the Multi-Community Environment-and-Health Study. Science of the Total Environment. Vol. 470-471:818-828.
  • Nieboer E, Tsuji JS, Martin I, and Liberda EN. 2013. Human Biomonitoring Issues Related to Lead Exposure. Environmental Science: Processes & Impacts (Formerly JEM). Vol. 15:1824-1829.
  • Liberda EN and Chen LC. 2013. An evaluation of the potential doses from the inhalation of coal combustion products. Journal of Air and Waste Management Association. Vol. 63(6):671-680.
  • Karagatzides JD, Kozlovic DR, De Luliis G, Liberda EN, General Z, Liedtke J, McCarthy DD, Gomez N, Metatawabin D, Tsuji JS. 2012. Youth Environmental Science Outreach in the Mushkegowuk Territory of Subarctic Ontario, Canada. Applied Environmental Education and Communication. Vol. 10:1-10.
  • Hori Y, Tam B, Gough WA, Ho-Foong E, Karagatzides JD, Liberda EN, Tsuji LJS.  2012. Use of traditional environmental knowledge to assess the impact of climate change on subsistence fishing in the James Bay Region of Northern Ontario, Canada. Rural and Remote Health. Vol. 12: 1878.
  • Liberda, EN., Bruce C Wainman, Alain LeBlanc, et al. 2011. Dietary Exposure of PBDEs Resulting from a Subsistence Diet in Three First Nation Communities in the James Bay Region of Canada. Environment International. Vol. 37(3):631-6.
  • Liberda EN, Cuevas AK, Qu Q, Grunig G, Chen LC. 2010 Exposure to Inhaled Nickel Nanoparticles Causes a Reduction in Number and Function of Bone Marrow Endothelial Progenitor Cells. Inhalation Toxicology. Vol. (S2):95-9.
  • Azita Cuevas, Liberda, EN., Patricia Gillespie, Jorge Allina, et al. 2010. Inhaled Nickel Nanoparticles Alters Vascular Reactivity in C57BL/6 Mice. Inhalation Toxicology, Vol. (S2):100-6.
  • Qu, S., Liberda E.N., Qu, Q., Chen, L.C. 2010. In Vitro Assessment of the Inflammatory Response of Respiratory Endothelial Cells Exposed to Particulate Matter. Journal of Toxicology and Environmental Health: Part A. Vol. 73(16):1113-21
  • L.J.S. Tsuji, B.C. Wainman, R.K. Jayasinghe, E.P. VanSpronsen, E.N. Liberda. 2009. Determining Tissue-Lead Levels in Large Game Mammals Harvested with Lead Bullets: Human Health Concerns. Bulletin of Environmental Contamination and Toxicology. Vol. 82(4):435-439.

Position Currently Held:

Associate Professor

Awards and honours

Contact details

Office details

  • POD-253C, Podium building