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Titre du document / Document title

Commuter exposure to ultrafine particles in different urban locations, transportation modes and routes

Auteur(s) / Author(s)

RAGETTLI Martina S. (1 2) ; CORRADI Elisabetta (1 2) ; BRAUN-FAHRLÄNDER Charlotte (1 2) ; SCHINDLER Christian (1 2) ; DE NAZELLE Audrey (3) ; JERRETT Michael (4) ; DUCRET-STICH Regina E. (1 2) ; KÜNZLI Nino (1 2) ; PHULERIA Harish C. (1 2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Swiss Tropical and Public Health Institute, Department of Epidemiology and Public Health, Basel, SUISSE
(2) University of Basel, SUISSE
(3) Centre for Environmental Policy, Imperial College London, ROYAUME-UNI
(4) School of Public Health, University of California, Berkeley, ETATS-UNIS

Résumé / Abstract

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 period. Bicycle travel along main streets between home and work place (24 min on average) contributed 21% and 5% to total daily UFP exposure in winter and summer, respectively. Contribution of bicycle commutes to total daily UFP exposure could be reduced by half if main roads are avoided. Our results show the importance of considering commuter behavior and route choice in exposure assessment studies.

Revue / Journal Title

Atmospheric environment    ISSN  1352-2310 

Source / Source

2013, vol. 77, pp. 376-384 [9 page(s) (article)] (1/2 p.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1994) (Revue)

Mots-clés anglais / English Keywords

Europe

;

Commuter

;

Public health

;

Switzerland

;

Health and environment

;

Daily variation

;

Transportation mode

;

Particle size distribution

;

Exposure

;

Epidemiology

;

Ultrafine particle

;

Aerosols

;

Air pollution

;

Urban area

;

Mots-clés français / French Keywords

Europe

;

Navetteur

;

Santé publique

;

Suisse

;

Santé et environnement

;

Variation journalière

;

Moyen transport

;

Distribution dimension particule

;

Exposition

;

Epidémiologie

;

Particule ultrafine

;

Aérosol

;

Pollution air

;

Zone urbaine

;

Mots-clés espagnols / Spanish Keywords

Europa

;

Viajero suburbano

;

Salud pública

;

Suiza

;

Salud y medio ambiente

;

Variación diaria

;

Medio transporte

;

Distribución dimensión partícula

;

Exposición

;

Epidemiología

;

Partícula ultrafina

;

Aerosol

;

Contaminación aire

;

Zona urbana

;

Mots-clés d'auteur / Author Keywords

Air pollution

;

Ultrafine particles

;

Commuter

;

Near-road exposure

;

Particle size

;

Switzerland

;

Localisation / Location

INIST-CNRS, Cote INIST : 8940 B, 35400050152165.0390

Nº notice refdoc (ud4) : 27681123



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