A5057127090- Air Quality and Health Impacts
- Noise Effects and Management
- Air Quality Monitoring and Forecasting
- Vehicle emissions and performance
- Climate Change and Health Impacts
- Indoor Air Quality and Microbial Exposure
- Environmental Justice and Health Disparities
- Urban Transport and Accessibility
- Impact of Light on Environment and Health
- Odor and Emission Control Technologies
- Toxic Organic Pollutants Impact
- Advanced Aircraft Design and Technologies
- Fire effects on ecosystems
- Urban Heat Island Mitigation
- COVID-19 impact on air quality
- Urban Green Space and Health
- Transportation Planning and Optimization
- Nutritional Studies and Diet
- Cancer Risks and Factors
- Energy and Environment Impacts
- Diet and metabolism studies
- Smoking Behavior and Cessation
- Allergic Rhinitis and Sensitization
- Aerodynamics and Fluid Dynamics Research
- Radiation Dose and Imaging
Health Canada
2015-2025
University of Toronto
2021-2024
Government of Canada
2024
Carleton University
2016-2019
Creative Commons
2018
University of Ottawa
2018
Ministry of Environment
2018
McGill University
2017
Wilfrid Laurier University
2010-2014
In-Q-Tel
2014
Studying the physiologic effects of components fine particulate mass (PM2.5) could contribute to a better understanding nature toxicity air pollution. We examined relation between acute changes in cardiovascular and respiratory function, PM2.5-associated-metals. Using generalized linear mixed models, daily ambient PM2.5-associated metals were compared measures 59 healthy subjects who spent 5-days near steel plant on college campus. Interquartile increases calcium, cadmium, lead, strontium,...
Existing evidence suggests that ambient ultrafine particles (UFPs) (<0.1µm) may contribute to acute cardiorespiratory morbidity. However, few studies have examined the long-term health effects of these pollutants owing in part a need for exposure surfaces can be applied large population-based studies. To address this need, we developed land use regression model UFPs Montreal, Canada using mobile monitoring data collected from 414 road segments during summer and winter months between 2011...
Little is known about the long-term health effects of ambient ultrafine particles (<0.1 μm) (UFPs) including their association with respiratory disease incidence. In this study, we examined relationship between exposure to UFPs and incidence lung cancer, adult-onset asthma, chronic obstructive pulmonary (COPD). Our study cohort included approximately 1.1 million adults who resided in Toronto, Canada were followed for 1996 2012. UFP exposures assigned residential locations using a land use...
Exposure models are needed to evaluate the chronic health effects of ambient ultrafine particles (<0.1 μm) (UFPs). We developed a land use regression model for UFPs in Toronto, Canada using mobile monitoring data collected during summer/winter 2010-2011. In total, 405 road segments were included analysis. The final explained 67% spatial variation mean and terms logarithm distances highways, major roads, central business district, Pearson airport, bus routes as well variables number on-street...
Previous studies reported that long-term exposure to traffic-related air pollution may increase the incidence of hypertension and diabetes. However, little is known about associations ultrafine particles (≤0.1 μm in diameter) with these two conditions.We conducted a population-based cohort study investigate between exposures nitrogen dioxide (NO2) diabetes hypertension. Our population included all Canadian-born residents aged 30 100 years who lived City Toronto, Canada, from 1996 2012....
Ambient ultrafine particles (UFPs, <0.1 µm) can reach the human brain, but to our knowledge, epidemiologic studies have yet evaluate relation between UFPs and incident brain tumors.We conducted a cohort study of within-city spatial variations in ambient across Montreal Toronto, Canada, among 1.9 million adults included multiple cycles Canadian Census Health Environment Cohorts (1991, 1996, 2001, 2006). UFP exposures (3-year moving averages) were assigned residential locations using land-use...
System-representative commuter air pollution exposure data were collected for the metro systems of Toronto, Montreal, and Vancouver, Canada. Pollutants measured included PM2.5 (PM = particulate matter), PM10, ultrafine particles, black carbon, elemental composition PM2.5. Sampling over three weeks was conducted in summer winter each city covered system on a daily basis. Mixed-effect linear regression models used to identify features related exposures. Ambient levels its components compared...
Rationale: Little is known regarding the impact of ambient ultrafine particles (UFPs; <0.1 μm) on childhood asthma development. Objectives: To examine association between prenatal and early postnatal life exposure to UFPs development asthma. Methods: A total 160,641 singleton live births occurring in City Toronto, Canada April 1, 2006, March 31, 2012, were identified from a birth registry. Associations air pollutants incidence (up age 6) estimated using random effects Cox proportional...
Commuters may be exposed to increased levels of traffic-related air pollution owing close proximity traffic-emissions. We collected in-vehicle and roof-top measurements over 238 commutes in Montreal, Toronto, Vancouver, Canada between 2010 2013. Voice recordings were used collect real-time information on traffic density the presence diesel vehicles multivariable linear regression models estimate impact these factors pollutant concentrations (and indoor/outdoor ratios) along with parameters...
Concentrations of airborne continuous fine particulate matter or (PM2.5), black carbon (BC), and ultrafine particles (UFP) were continuously measured over 5 days in winter summer both indoors outdoors at residences for forty-eight adults 2005 forty-seven asthmatic children 2006. During 2006, personal concentrations PM2.5 also continuously. All 4 instruments employed performed well laboratory field conditions. Mean outdoor PM2.5, BC, UFP significantly higher than either indoor concentrations....
Although long-term exposure to traffic-related air pollutants such as nitrogen dioxide has been linked cardiovascular disease (CVD) mortality, little is known about the association between ultrafine particles (UFPs), defined less than or equal 0.1 μm in diameter, and incidence of major CVD events. We conducted a population-based cohort study assess associations chronic UFPs with incident congestive heart failure (CHF) acute myocardial infarction. Our population comprised all Canadian...
Indoor concentrations of air pollutants (benzene, toluene, formaldehyde, acetaldehyde, acrolein, nitrogen dioxide, particulate matter, elemental carbon and ozone) were measured in residences Regina, Saskatchewan, Canada. Data collected 106 homes winter 111 summer 2007, with 71 participating both seasons. In addition, data for relative humidity, temperature, exchange rates, housing characteristics occupants’ activities during sampling collected. Multiple linear regression analysis was used to...
ABSTRACT The Windsor, Ontario Exposure Assessment Study evaluated the contribution of ambient air pollutants to personal and indoor exposures adults asthmatic children living in Ontario, Canada. In addition, role personal, indoor, outdoor pollution upon children's respiratory health was assessed. Several active passive sampling methods were applied, or adapted, for residential monitoring nitrogen dioxide, volatile organic compounds, particulate matter (PM; PM ≤2.5 μm [PM2.5] ≤ 10 [PM10]...
A large landfill fire occurred in Iqaluit, Canada spring/summer 2014. Air quality data were collected to characterize emissions as well potential threats public health. Criteria pollutants monitored (PM2.5, O3, NO2) along with dioxins/furans, polycyclic aromatic hydrocarbons, and volatile organic compounds. Median daily dioxin/furan concentrations 66-times higher during active burning (0.2 pg/m3 Toxic Equivalency Quotient (TEQ)) compared after the was extinguished (0.003 TEQ). Other changed...
Diesel exhaust contains large numbers of ultrafine particles (UFPs, <0.1µm) and is a recognized human carcinogen. However, epidemiological studies have yet to evaluate the relationship between UFPs cancer incidence.We conducted case-control study incident prostate in Montreal, Canada. Cases were identified from all main Francophone hospitals Montreal area 2005 2009. Population controls provincial electoral lists French residents frequency-matched cases using 5-year age groups. UFP exposures...
Exposure to biocontaminants, such as dust mites, animal dander, bacteria, and mold, is associated with a range of health effects. This study identified household characteristics indoor biocontaminant loadings in four Canadian cities. Floor was collected 290 homes Edmonton, Halifax, Montreal, Windsor. The samples were analyzed for house mite allergens (Der f 1 Der p 1), cat allergen (Fel d cockroach (Bla g beta-(1,3)-D-glucan, endotoxin. Household information obtained through questionnaires...
The Copenhagen Metro comprises four lines, the M1, M2, M3 and M4, with 25 subterranean stations an additional 14 above ground, serving ca. 80 million passengers annually. In this study we measure fine particulate matter (PM2.5) carbon dioxide (CO2) concentrations in trains across entire system. partially underground high PM2.5 average of 109 μg m-3 are found below-ground stations. observed correlation between concentration distance a station tunnel exit is attributed to ventilation via...
The development of high-resolution spatial and spatiotemporal models air pollutants is essential for exposure science epidemiological applications. While fixed-site sampling has conventionally provided input data statistical predictive models, the evolving mobile monitoring method offers improved resolution, ideal measuring with high variability such as ultrafine particles (UFP). Quebec Air Pollution Exposure Epidemiology (QAPEE) study measured modelled distributions understudied pollutants,...
Cardiovascular malformations account for nearly one-third of all congenital anomalies, making these the most common type birth defects. Little is known regarding influence ambient ultrafine particles (<0.1 μm) (UFPs) on their occurrence. This population-based study examined association between prenatal exposure to UFPs and heart defects (CHDs). A total 158,743 singleton live births occurring in City Toronto, Canada April 1st 2006 March 31st 2012 were identified from a registry. Associations...