Détail de la notice
Titre du Document
Commuter exposure to ultrafine particles in different urban locations, transportation modes and routes
Auteur(s)
RAGETTLI Martina S. ; CORRADI Elisabetta ; BRAUN-FAHRLÄNDER Charlotte ; ...
Résumé
A better understanding of ultrafine particle (UFP) exposure in different urban transport microenvironments is important for epidemiological exposure assessments and for policy making. Three sub-studies were performed to characterize personal exposure to UFP concentration and average particle size distribution diameters in frequently traveled commuter microenvironments in the city of Basel, Switzerland. First, the spatial variation of sidewalk UFP exposures within urban areas and transport-specific microenvironments was explored. Second, exposure to UFP concentration and average particle size were quantified for five modes of transportation (walking, bicycle, bus, tram, car) during different times of the day and week, along the same route. Finally, the contribution of bicycle commuting along two different routes (along main roads, away from main roads) to total daily exposures was assessed by 24-h personal measurements. In general, smaller average particle sizes and higher UFP levels were measured at places and for travel modes in close proximity to traffic. Average trip UFP concentrations were higher in car (31,784 particles cm―3) and on bicycle (22,660 particles cm―3) compared to walking (19,481 particles cm―3) and public transportation (14,055―18,818 particles cm―3). Concentrations were highest for all travel modes during weekday morning rush hours, compared to other time periods. UFP concentration was lowest in bus, regardless of time peri
Editeur
Elsevier
Identifiant
ISSN : 1352-2310
Source
Atmospheric environment (1994) A. 2013, vol. 77, pp. 376-384 [9 pages] [bibl. : 1/2 p.]
Langue
Anglais
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