1. Toward Cleaner Transport Alternatives: Reduction in Exposure to Air Pollutants in a Mass Public Transport
- Author
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Ricardo Morales Betancourt, Boris Galvis, Daniela Mendez-Molano, Juan Manuel Rincón-Riveros, Yadert Contreras, Thalia Alejandra Montejo, Diego Roberto Rojas-Neisa, and Oscar Casas
- Subjects
Air Pollutants ,Soot ,Air Pollution ,Environmental Chemistry ,Particulate Matter ,General Chemistry ,Environmental Monitoring ,Vehicle Emissions - Abstract
Commuters are often exposed to higher concentrations of air pollutants due to its proximity to mobile sources. Despite recent trends in urban transport toward zero- and low-tailpipe emission alternatives, the assessments of the impact of these transformations on commuter exposure are limited by the low frequency of such studies. In this work, we use a unique data set of personal exposure concentration measurements collected over the span of 5 years to analyze changes due to the introduction of a new fleet for Bogotá's Bus Rapid Transit System. In that system, over a thousand Euro-II and -III diesel-powered buses were replaced with Euro-VI compressed natural gas and filter-equipped Euro-V diesel buses. We measured personal exposure concentrations of equivalent black carbon (eBC), fine particulate (PM
- Published
- 2022