Particle Number Emissions and Source Signatures of an Industrial Facility

Morawska, Lidia, Johnson, Graham R., He, Congrong, Ayoko, Godwin A., Lim, McKenzie, Swanson, Cheryl E., Ristovski, Zoran, & Moore, Michael (2006) Particle Number Emissions and Source Signatures of an Industrial Facility. Environmental Science and Technology, 40(3), pp. 803-814.

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The work presented was conducted within the scope of a larger study investigating impacts of the Stuart Oil Shale project, a facility operating to the north of the industrial city of Gladstone, Australia. The aims of the investigations were threefold: (a) the identification of the plant signatures in terms of particle size distributions in the submicrometer range (13-830 nm) through stack measurements; (b) exploring the applicability of these signatures in tracing the source contributions at locations of interest, at a distance from the plant, and (c) assessing the contribution of the plant to the total particle number concentration at locations of interest. The stack measurements conducted for three different conditions of plant operation showed that the particle size distributions were bimodal with average modal count median diameters (CMD) of 24 (SD 4) and 52 (SD 9) nm. The average of all the particle size distributions recorded within the plant sector at a site located 4.5 km from the plant, over the sampling period when the plant was operating also showed a bimodal distribution. The modal CMDs in this case were 27 nm and 50 nm, similar to those at the stack. This bimodal size distribution is distinct from the size distribution of the most common ambient anthropogenic emission source, which is vehicle emissions, and can be considered as a signature of this source. The average contribution of the plant (for plant sector winds) was estimated to be (10.0 ± 3.8)x102 particles cm-3 and constituted approximately a 50% increase over the local particle ambient concentration for plant sector winds. This increase in particle number concentration compared to the local background, while high compared to the clean environments, is not significant when compared to concentrations generally encountered in the urban environment of Brisbane.

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ID Code: 5802
Item Type: Journal Article
Refereed: Yes
Additional Information: This article is freely available from the American Chemical Society website 12 months after the publication date. See links to publisher website in this record.
Keywords: Submicrometer Particles, Particle Size Distribution, Industrial Emissions, Source Signatures
DOI: 10.1021/es048337e
ISSN: 0013-936X
Subjects: Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > ATMOSPHERIC SCIENCES (040100) > Atmospheric Sciences not elsewhere classified (040199)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2006 American Chemical Society
Copyright Statement: The contents of this journal can be freely accessed online via the ACS web page 12 months after publication. See hypertext link.
Deposited On: 09 Jan 2007 00:00
Last Modified: 01 Aug 2014 00:36

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