1999-present: Adjunct Professor and Member of the Faculty of Graduate and Postdoctoral Studies, University of Ottawa

1996-2006: Associate Editor Geoscience Canada

1998-2002: Adjunct Professor in the School of Engineering at the University of Guelph

1997: Visiting Professor, Department of Environmental and Resource Sciences, University of Nevada in Reno, USA.


BSc University of Waterloo (1981), MSc University of Toronto (1987), PhD University of Waterloo (1993)

Excellence in Science Award, Health Canada Science Forum (2008); Earth Sciences Sector Merit Award, Natural Resources Canada (2002); Innovative Science Award Office of the Chief Scientist (2002).

In 2002 Dr. Rasmussen was awarded $100,000 by the Department of National Defence to design and build a Gravimetric Analysis Facility for the accurate measurement of airborne particulate matter collected using personal and environmental samplers. This facility is now fully operational, and Dr. Rasmussen and her colleagues received a patent and trademark for their invention.


Pat E. Rasmussen, PhD

Research Scientist


As a research scientist with Health Canada, Dr. Rasmussen is the Leader of the Metals and Airborne PM Laboratory in the Exposure and Biomonitoring Division, Environmental Health Science and Research Bureau.

  • Dr. Rasmussen conducts research in the field of environmental geochemistry and health, specifically field and analytical protocols for measuring human exposures to metals in urban air, particulate matter, and household dust. 
  • Principal Investigator of "Canadian House Dust Study"; a nation-wide investigation into the chemical make-up of urban settled dust in residential environments. Principal Investigator of research into metal bioaccessibility and speciation in household dust and airborne particles, and refining methods for characterizing nanoparticles, funded by Chemicals Management Plan.
  • Co-investigator in Canadian Study of the Impact of Residential Sources of Lead on Blood Lead Levels of Young Children; Principal Investigator:  Dr. Patrick Levallois, Institut national de santé publique du Québec.
  • Principal Investigator of "Refined Analysis and Characterization Methods for Metals in Urban Residential Air", MITHE Strategic Network [] directed by Dr. Bev Hale, University of Guelph


Principal Investigator of collaborative co-location agreement between Health Canada and U of Ottawa, with goal to advance the research linkages between Earth Sciences and Health

Member of Canadian Standards Association Nanotechnology Occupational Health and Safety Technical Committee & Exposures Subcommittee/ Member of Canadian Advisory Committee for International Standards Association  ISO/TC229 "Nanotechnology" Activities/Member of OECD WPMN Steering Group 8  "Exposure Measurement and Exposure Mitigation"

Supervisor/Co-supervisor of 2 PhD theses (completed); 3 MSc theses (completed); 4 undergraduate theses (completed)

Requested by Netherlands Government to review proposed approaches to bioaccessibility/bioavailability adjustments in risk assessments of contaminated lands in the Netherlands.

Member of Bioaccessiblity Research Canada (BARC)


Beauchemin, S., MacLean, L.C.W., Rasmussen, P.E. (2011) Lead speciation in indoor dust: A case study to assess old paint contribution in a Canadian urban house. Environmental Geochemistry and Health, 33, 343-352.

Rasmussen, P.E., Beauchemin, S., Chénier, M., Lévesque, C., MacLean, L.C.W., Marro, L., Jones-Otazo, H., Petrovic, S., McDonald, L.T., Gardner, H.D.  (2011) Canadian House Dust Study: Lead Bioaccessibility and Speciation. Environmental Science & Technology, 45 (11), 4959-4965.

MacLean, L.C.W, Beauchemin, S., and Rasmussen, P.E. (2011) Lead speciation in house dust from Canadian urban homes using EXAFS, micro-XRF and micro-XRD. Environ. Sci. Technol. 45 (13), 5491–5497. 

McDonald, L.T., Rasmussen, P.E., Chenier, M., Levesque, C. (2011) Extending wipe sampling methodologies to elements other than lead. Journal of Environmental Monitoring, 13, 377-383.

Rasmussen, P.E., Gardner, H.D., Niu, J. (2010) Buoyancy-corrected gravimetric analysis of lightly loaded filters. Journal of Air and Waste Management, 60: 1065-1077

Walker, S.R., Jamieson, H.E., Rasmussen, P.E. (2011) Application of Synchrotron Microprobe Methods to Solid-Phase Speciation of Metals and Metalloids in House Dust. Environ. Sci. Technol.

Wallace, L., Wheeler, A.J., Kearney, J., Van Ryswyk, K., You, H., Kulka, R., Rasmussen, P.E., Brook, J.R. and Xu, X. (2011). Validation of Continuous Particle Monitors for Personal, Indoor, and Outdoor Exposures. Journal of Exposure Analysis and Environmental Epidemiology, 21, 49-64.

Niu J, Rasmussen PE, Wheeler A, Williams R, Chénier M. (2010) Evaluation of airborne particulate matter and metals data in personal, indoor and outdoor environments using ED-XRF and ICP-MS and co-located duplicate samples. Atmospheric Environment. 44:235-245.

Rasmussen, P.E., S. Beauchemin, M. Nugent, R. Dugandzic, M. Lanouette and M . Chénier. (2008). Influence of matrix composition on bioaccessible copper, zinc and nickel in urban residential dust and soil. Human and Ecological Risk Assessment 14(2) 351-371.

Rasmussen, P.E., Wheeler, A.J., Hassan, N.M., Filiatreault, A., and Lanouette, M. (2007) Monitoring personal, indoor, and outdoor exposures to metals in airborne particulate matter: risk of contamination during sampling, handling and analysis. Atmospheric Environment. 41: 5897-5907.