Relating urban airborne particle concentrations to shipping using carbon based elemental emission ratios

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dc.contributor.authorJohnson, GRen_AU
dc.contributor.authorJuwono, AMen_AU
dc.contributor.authorFriend, AJen_AU
dc.contributor.authorCheung, HCen_AU
dc.contributor.authorStelcer, Een_AU
dc.contributor.authorCohen, DDen_AU
dc.contributor.authorAyoko, GAen_AU
dc.contributor.authorMorawska, Len_AU
dc.date.accessioned2016-08-30T01:39:31Zen_AU
dc.date.available2016-08-30T01:39:31Zen_AU
dc.date.issued2014-10en_AU
dc.date.statistics2016-08-30en_AU
dc.description.abstractThis study demonstrates a novel method for testing the hypothesis that variations in primary and secondary particle number concentration (PNC) in urban air are related to residual fuel oil combustion at a coastal port lying 30 km upwind, by examining the correlation between PNC and airborne particle composition signatures chosen for their sensitivity to the elemental contaminants present in residual fuel oil. Residual fuel oil combustion indicators were chosen by comparing the sensitivity of a range of concentration ratios to airborne emissions originating from the port. The most responsive were combinations of vanadium and sulphur concentration ([S], [V]) expressed as ratios with respect to black carbon concentration ([BC]). These correlated significantly with ship activity at the port and with the fraction of time during which the wind blew from the port. The average [V] when the wind was predominantly from the port was 0.52 ng m−3 (87%) higher than the average for all wind directions and 0.83 ng m−3 (280%) higher than that for the lowest vanadium yielding wind direction considered to approximate the natural background. Shipping was found to be the main source of V impacting urban air quality in Brisbane. However, contrary to the stated hypothesis, increases in PNC related measures did not correlate with ship emission indicators or ship traffic. Hence at this site ship emissions were not found to be a major contributor to PNC compared to other fossil fuel combustion sources such as road traffic, airport and refinery emissions. © 2014, Elsevier Ltd.en_AU
dc.identifier.citationJohnson, G. R., Juwono, A. M., Friend, A. J., Cheung, H. C., Stelcer, E., Cohen, D., Ayoko, G. A., & Morawska, L. (2014). Relating urban airborne particle concentrations to shipping using carbonbased elemental emission ratios. Atmospheric Environment, 95, 525-536. doi:10.1016/j.atmosenv.2014.07.003en_AU
dc.identifier.govdoc7051en_AU
dc.identifier.issn1352-2310en_AU
dc.identifier.journaltitleAtmospheric Environmenten_AU
dc.identifier.pagination525-536en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.atmosenv.2014.07.003en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/7438en_AU
dc.identifier.volume95en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectTracer techniquesen_AU
dc.subjectOilsen_AU
dc.subjectParticulatesen_AU
dc.subjectSulfatesen_AU
dc.subjectCarbonen_AU
dc.subjectVanadiumen_AU
dc.titleRelating urban airborne particle concentrations to shipping using carbon based elemental emission ratiosen_AU
dc.typeJournal Articleen_AU
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