Use of particle bound polycyclic aromatic hydrocarbon (PAHs) diagnostic ratios to assess pollution sources

Universal or local application?

Ludovic A. Bernaudat, Peter F. Nelson

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

    Abstract

    Particulate Matter (PM) influences both global climate and public health. For this reason, regulators have set stringent standards for ambient PM concentration. Most anthropogenic PM is emitted from combustion sources. Among other compounds, these combustion processes produce a range of particle bound PAH; the relative concentrations of these compounds may be characteristic of the source, fuel, and combustion conditions. This is particularly the case for diesel engines, one of the major sources of PM in urban locations. In light of this, 40 samples were collected in Sydney and an additional 20 samples were received from Hanoi, Vietnam. After soxhlet-extraction in an organic solvent, the extracts were concentrated and analysed by GC/MS using internal deuterated standards to quantify PAH. PAH diagnostic ratios could be a useful tool when assessing the proportion of ambient particles which may be due to diesel emissions. However, these ratios were dependant on the local fuel and fleet conditions. Background information on local fleet emissions was essential to ensure the selection of the proper ratio and to be able to adjust its range. The observed ratios of selected PAH were consistent with a major contribution from diesel vehicles to total PAH with a peak in winter and lower emissions in autumn. In Vietnam, results suggested that particle levels were mostly due to diesel emissions at kerbside and in the rural site but their influence was lower in the residential area where other major sources may be making a contribution. This is an abstract of a paper presented at the 14th International Union of Air pollution Prevention and Environmental Protection Associations World Congress 2007 (Brisbane, Queensland 9/9-13/2007).

    Original languageEnglish
    Title of host publicationProc. 14th International Union of Air Pollution Prevention and Environmental Protection Associations (IUAPPA) World Congress 2007, 18th Clean Air Society of Australia and New Zealand (CASANZ) Conf.
    EditorsD. Doley
    Place of PublicationBrisbane, OLD
    PublisherClean Air Society of Australia and New Zealand
    Pages1-6
    Number of pages6
    ISBN (Print)9780975757161
    Publication statusPublished - 2007
    EventProc. 14th International Union of Air Pollution Prevention and Environmental Protection Associations (IUAPPA) World Congress 2007, 18th Clean Air Society of Australia and New Zealand (CASANZ) Conf. - Brisbane, QLD, Australia
    Duration: 9 Sep 200713 Sep 2007

    Other

    OtherProc. 14th International Union of Air Pollution Prevention and Environmental Protection Associations (IUAPPA) World Congress 2007, 18th Clean Air Society of Australia and New Zealand (CASANZ) Conf.
    CountryAustralia
    CityBrisbane, QLD
    Period9/09/0713/09/07

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