Elemental composition of ambient fine particles in urban schools : sources of children’s exposure

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dc.contributor.authorCrilley, LRen_AU
dc.contributor.authorAyoko, GAen_AU
dc.contributor.authorStelcer, Een_AU
dc.contributor.authorCohen, DDen_AU
dc.contributor.authorMorawska, Len_AU
dc.date.accessioned2019-11-11T23:37:40Zen_AU
dc.date.available2019-11-11T23:37:40Zen_AU
dc.date.issued2014-12-01en_AU
dc.date.statistics2019-01-12en_AU
dc.description.abstractCurrently, there is a limited understanding of the sources of ambient fine particles that contribute to the exposure of children at urban schools. Since the size and chemical composition of airborne particle are key parameters for determining the source as well as toxicity, PM1 particles (mass concentration of particles with an aerodynamic diameter less than 1 µm) were collected at 24 urban schools in Brisbane, Australia and their elemental compositions determined. Based on the elemental compositions four main sources were identified; secondary sulphates, biomass burning, vehicle and industrial emissions. While secondary sulphates were likely to be a large contributing source by mass, industrial emissions accounted for the most variation in trace metals in the PM1 that children were exposed to at the schools. PM1 concentrations at the schools were compared to the elemental composition of the PM2.5 particles (mass concentration of particles with an aerodynamic diameter less than 2.5 µm) from a previous study conducted at a suburban and roadside site in Brisbane. This comparison suggested that the more toxic heavy metals (V, Cr, Ni, Cu, Zn and Pb), mostly from vehicle and industrial emissions, were predominantly in the PM1 fraction. Thus, the results from this study points to PM1 as a potentially good particle size fraction for investigating the health effects of airborne particles. Further work is required to confirm this hypothesis. © 2014 Taiwan Association for Aerosol Researchen_AU
dc.identifier.citationCrilley, L. R., Ayoko, G. A., Stelcer, E., Cohen, D. D., Mazaheri, M., & Morawska, L. (2014). Elemental composition of ambient fine particles in urban schools: sources of children’s exposure. Aerosol and Air Quality Research, 14(7), 1906-1916. doi:10.4209/aaqr.2014.04.0077en_AU
dc.identifier.govdoc8591en_AU
dc.identifier.issn1680-8584en_AU
dc.identifier.issue7en_AU
dc.identifier.journaltitleAerosol and Air Quality Researchen_AU
dc.identifier.pagination1906-1916en_AU
dc.identifier.urihttp://doi.org/10.4209/aaqr.2014.04.0077en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9080en_AU
dc.identifier.volume14en_Au
dc.language.isoenen_AU
dc.publisherAerosol and Air Quality Researchen_AU
dc.subjectFine particlesen_AU
dc.subjectChemical compositionen_AU
dc.subjectToxic materialsen_AU
dc.subjectHeavy metalsen_AU
dc.subjectParticulatesen_AU
dc.subjectEnvironmental exposureen_AU
dc.subjectUrban areasen_AU
dc.subjectEducational facilitiesen_AU
dc.subjectAustraliaen_AU
dc.subjectQueenslanden_AU
dc.titleElemental composition of ambient fine particles in urban schools : sources of children’s exposureen_AU
dc.typeJournal Articleen_AU
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