Impact of traffic intensity and pavement aggregate size on road dust particles loading

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• 作者：F. Amato ; M. P ; olfi ; A. Alastuey ; A. Lozano ; J. Contreras Gonz¨¢lez ; X. Querol
• 关键词：PM10 ; Resuspension ; Emission factor
• 刊名：Atmospheric Environment
• 出版年：2013
• 出版时间：October, 2013
• 年：2013
• 卷：77
• 期：Complete
• 页码：711-717
• 全文大小：871 K

文摘

Road dust emissions severely hamper PM10 urban air quality and their burden is expected to increase relatively to primary motor exhaust emissions. Beside the large influence of climate and meteorology, the emission potential varies widely also from one road to another due to numerous factors such as traffic conditions, pavement type and external sources. Nevertheless none of these factors is sufficiently known for a reliable description in emission modelling and for decision making in air quality management. In this study we carried out intensive road dust measurement campaigns in South Spain, with the aim of investigating the relationship between emission potential (i.e. road dust load) and traffic intensity, pavement aggregate size and distance from braking zones. Results indicate that, while no impact from braking activity can be drawn on the bulk road dust mass, an increase in traffic intensity or mean pavement aggregate size clearly reduce the single vehicle emission potential.