Tom Dann

Learn More
The United States and Canada currently use exposure-based metrics to protect vegetation from O(3). Using 5 years (1999-2003) of co-measured O(3), meteorology and growth response, we have developed exposure-based regression models that predict Populus tremuloides growth change within the North American ambient air quality context. The models comprised(More)
Several adverse health effects, such as respiratory and cardiovascular morbidity, have been linked to exposure to particulate matter in ambient air; however, the biologic activity of gas-phase ambient organic air contaminants has not been examined as thoroughly. Using aryl hydrocarbon receptor (AHR)-based and estrogen receptor (ER)-based cell bioassay(More)
  • K J Godri, G J Evans, J Slowik, A Knox, J Abbatt, J Brook +2 others
  • 2009
Water soluble inorganic particles components (Cl − , SO 2− 4 , NO − 3 , and NH + 4) and concentrations of their associated precursor gases (HCl, SO 2 , HNO 3 , NH 3) were semi-continuously measured using the Dionex Gas Particle Ion Chromatography (GPIC) system. Sampling was conducted adjacent to a high traffic street in downtown Toronto, Canada from June(More)
  • 1