ArticleEnvironmental health : a global access science source2013
A new exposure metric for traffic-related air pollution? An analysis of determinants of hopanes in settled indoor house dust.
Article in Environmental health : a global access science source, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Associations between household characteristics and environmentally persistent free radicals in house dust from two Australian locations.Frontiers in public health · 2025Article
- An Investigation into Which Methods Best Explain Children's Exposure to Traffic-Related Air Pollution.Toxics · 2022Article
- Environmentally Persistent Free Radicals: Linking Air Pollution and Poor Respiratory Health?American journal of respiratory and critical care medicine · 2019Article
- The Canadian Healthy Infant Longitudinal Development (CHILD) birth cohort study: assessment of environmental exposures.Journal of exposure science & environmental epidemiologyArticle
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Authors and funding
13 authors.
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Abstract
backgroundExposure to traffic-related air pollution (TRAP) can adversely impact health but epidemiologic studies are limited in their abilities to assess long-term exposures and incorporate variability in indoor pollutant infiltration.
methodsIn order to examine settled house dust levels of hopanes, engine lubricating oil byproducts found in vehicle exhaust, as a novel TRAP exposure measure, dust samples were collected from 171 homes in five Canadian cities and analyzed by gas chromatography-mass spectrometry. To evaluate source contributions, the relative abundance of the highest concentration hopane monomer in house dust was compared to that in outdoor air. Geographic variables related to TRAP emissions and outdoor NO2 concentrations from city-specific TRAP land use regression (LUR) models were calculated at each georeferenced residence location and assessed as predictors of variability in dust hopanes.
resultsHopanes relative abundance in house dust and ambient air were significantly correlated (Pearson's r=0.48, p<0.05), suggesting that dust hopanes likely result from traffic emissions. The proportion of variance in dust hopanes concentrations explained by LUR NO2 was less than 10% in Vancouver, Winnipeg and Toronto while the correlations in Edmonton and Windsor explained 20 to 40% of the variance. Modeling with household factors such as air conditioning and shoe removal along with geographic predictors related to TRAP generally increased the proportion of explained variability (10-80%) in measured indoor hopanes dust levels.
conclusionsHopanes can consistently be detected in house dust and may be a useful tracer of TRAP exposure if determinants of their spatiotemporal variability are well-characterized, and when home-specific factors are considered.
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