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A review of commuter exposure to ultrafine particles
1. A Review of Commuter Exposure to Ultrafine Particles and Its Health Effects(Luke D. Knibbs, Tom Cole-Hunter, Lidia Morawska) Team Kevin! Presented by Kevin Ngyuen & Kevin Mandich
2. Why does this interest us? Portland has many avid cyclists and bike commuters Is cycling in urban areas healthy? How does driving compare to cycling?
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4. Methods Reviewed 47 previously-performed studies from cities in USA, UK, Australia, Italy, Canada, Netherlands etc. Derived trip-weighted average exposure level per transport mode Focused only on general trends
5. Results X-axis is number of trips per mode Y-axis is UFP exposure in thousands of particles per cubic-centimeter 3000 individual trips Tunnels are unique microenvironment Error bars denote the trip-weighted standard deviation
6. Significance of the Results This investigation further supports the health benefits of bicycle commuting beyond the obvious cardio-vascular advantages. It is also interesting that walking presents such a high exposure to UFPs. This is most likely due to pace (time).
7. Relevance to Sustainability Supports bicycling as healthy alternative to vehicle commuting. More cyclists would mean fewer drivers and fewer UFPs. Fewer UFPs would mean healthier air to breathe!
8. What the Heck? Error bars denote the trip-weighted standard deviation? How do these comparisons help since they were not done in under similar conditions? Health effects such as airway irritation and inflammation were noted from separate studies, but nothing directly related to the presented UFP exposure results
