title: Outdoor ultrafine particle concentrations in front of fast food restaurants.
abstract: Ultrafine particles (UFPs) have been associated with negative effects on human health. Emissions from motor vehicles are the principal source of UFPs in urban air. A study in Vancouver suggested that UFP concentrations were related to density of fast food restaurants near the monitoring sites. A previous monitoring campaign could not separate the contribution of restaurants from road traffic. The main goal of this study has been the quantification of fast food restaurants' contribution to outdoor UFP concentrations. A portable particle number counter (DiscMini) has been used to carry out mobile monitoring in a largely pedestrianized area in the city center of Utrecht. A fixed route passing 17 fast food restaurants was followed on 8 days. UFP concentrations in front of the restaurants were 1.61 times higher than in a nearby square without any local sources used as control area and 1.22 times higher compared with all measurements conducted in between the restaurants. Adjustment for other sources such as passing mopeds, smokers or candles did not explain the increase. In conclusion, fast food restaurants result in significant increases in outdoor UFP concentrations in front of the restaurant.
authors.affiliation: Institute for Risk Assessment Sciences (IRAS), Division of Environmental Epidemiology, Utrecht University, Utrecht, The Netherlands.
authors.forename: Cristina
authors.initials: C
authors.lastname: Vert
authors.affiliation: Institute for Risk Assessment Sciences (IRAS), Division of Environmental Epidemiology, Utrecht University, Utrecht, The Netherlands.
authors.forename: Kees
authors.initials: K
authors.lastname: Meliefste
authors.affiliation: Institute for Risk Assessment Sciences (IRAS), Division of Environmental Epidemiology, Utrecht University, Utrecht, The Netherlands.
authors.forename: Gerard
authors.initials: G
authors.lastname: Hoek
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000032:analysis*; D001955:British Columbia; D002947:Cities / Q000706:statistics & numerical data; D004781:Environmental Exposure / Q000032:analysis; D004784:Environmental Monitoring; D057140:Fast Foods; D006801:Humans; D018986:Motor Vehicles; D009426:Netherlands; D052638:Particulate Matter / Q000032:analysis*; D012147:Restaurants / Q000706:statistics & numerical data; D012828:Silicones / Q000032:analysis*; D001335:Vehicle Emissions / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter; D012828:Silicones; D001335:Vehicle Emissions