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Título: | Variation of PM 2.5 concentrations in relation to street washing activities |
Autor: | Karanasiou, Angeliki CSIC ORCID ; Moreno, Teresa CSIC ORCID ; Amato, Fulvio CSIC ORCID ; Tobías, Aurelio CSIC ORCID; Boldo, Elena; Linares, Cristina CSIC ORCID; Lumbreras, Julio; Borge, Rafael; Alastuey, Andrés CSIC ORCID; Querol, Xavier CSIC ORCID | Fecha de publicación: | 2012 | Editor: | Elsevier | Citación: | Atmospheric Environment 54: 465-469 (2012) | Resumen: | Several studies conducted in urban areas have pointed out that road dust resuspension contributes significantly to PM concentration levels. Street washing is one of the methods proposed to reduce resuspended road dust contributions to ambient PM concentrations. As resuspended particles are mainly found in the coarse mode, published studies investigating the effects of street washing have focused on PM 10 size fraction. As the PM 2.5 mass fraction of particles originating from mechanical abrasion processes may still be significant we conducted a study in order to evaluate the effects of street washing on the mitigation of resuspension of fine particles. The PM 2.5 mass concentration data were examined and integrated with the occurrence of street washing activities. In addition, the effect of the meteorological variability, traffic flow and street washing activities, on ambient PM 2.5 levels was evaluated by means of a multivariate regression model. The results revealed that traffic flow is the most important factor that controls PM 2.5 hourly concentrations while street washing activities did not influence fine particle mass levels. © 2012 Elsevier Ltd. | URI: | http://hdl.handle.net/10261/73453 | DOI: | 10.1016/j.atmosenv.2012.02.006 | Identificadores: | doi: 10.1016/j.atmosenv.2012.02.006 issn: 1352-2310 |
Aparece en las colecciones: | (IDAEA) Artículos |
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