Partitioning of trace elements and metals between quasi-1 ultrafine, accumulation and coarse
Particle size distribution patterns of trace elements and metals across three size fractions (<0.25 mm, quasi-ultrafine particles, q-UF; 0.25e2.5 mm, accumulation particles; 2.5e10 mm, coarse particles) were analysed in indoor and outdoor air at 39 primary schools across Barcelona (Spain). Specia...
| Autores: | , , , , , , , |
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| Formato: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2014 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/103672 |
| Acesso em linha: | http://hdl.handle.net/10261/103672 |
| Access Level: | acceso abierto |
| Palavra-chave: | Infiltration sources metals and elements ultrafine particles UFP PM0.25. |
| Resumo: | Particle size distribution patterns of trace elements and metals across three size fractions (<0.25 mm, quasi-ultrafine particles, q-UF; 0.25e2.5 mm, accumulation particles; 2.5e10 mm, coarse particles) were analysed in indoor and outdoor air at 39 primary schools across Barcelona (Spain). Special attention was paid to emission sources in each particle size range. Results evidenced the presence in q-UF particles of high proportions of elements typically found in coarse PM (Ca, Al, Fe, Mn or Na), as well as several potentially health-hazardous metals (Mn, Cu, Sn, V, Pb). Modal shifts (e.g., from accumulation to coarse or q-UF particles) were detected when particles infiltrated indoors, mainly for secondary inorganic aerosols. Our results indicate that the location of schools in heavily trafficked areas increases the abundance of q-UF particles, which infiltrate indoors quite effectively, and thus may impact children exposure to these health-hazardous particles. |
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