Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/9080
Title: Elemental composition of ambient fine particles in urban schools : sources of children’s exposure
Authors: Crilley, LR
Ayoko, GA
Stelcer, E
Cohen, DD
Morawska, L
Keywords: Fine particles
Chemical composition
Toxic materials
Heavy metals
Particulates
Environmental exposure
Urban areas
Schools
Airborne particles
Australia
Queensland
Issue Date: 1-Dec-2014
Publisher: Aerosol and Air Quality Research
Citation: Crilley, 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.2014.04.0077
Abstract: Currently, 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 Research
Gov't Doc #: 8591
URI: http://doi.org/10.4209/aaqr.2014.04.0077
http://apo.ansto.gov.au/dspace/handle/10238/9080
ISSN: 1680-8584
Appears in Collections:Journal Articles

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