作者: Tarja Yli-Tuomi , Päivi Aarnio , Liisa Pirjola , Timo Mäkelä , Risto Hillamo
DOI: 10.1016/J.ATMOSENV.2005.07.049
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摘要: Abstract Real-time particle number size distributions and NO, NO 2 , x CO, CO concentrations were measured with a mobile laboratory van in October 2003 on the streets highways of Helsinki metropolitan area, Finland. A bimodal distribution was observed about 85% particles being smaller than 29 nm. fuel-based emission factors for size-resolved numbers, determined. Wide obtained all pollutants. In addition, PM 2.5 samples collected elemental compositions analysed. Relative to fixed site urban street air Cu, BC, Fe, Zn elevated. Weather road conditions influenced more differences between city highway traffic environments.