Particle number emissions and source signatures of an industrial facility

Morawska, L., Johnson, G. R., He, C., Ayoko, G. A., Lim, M. C. H., Swanson, C, Ristovski, ZD and Moore, M (2006) Particle number emissions and source signatures of an industrial facility. Environmental Science and Technology, 40 3: 803-814. doi:10.1021/es048337e

Author Morawska, L.
Johnson, G. R.
He, C.
Ayoko, G. A.
Lim, M. C. H.
Swanson, C
Ristovski, ZD
Moore, M
Title Particle number emissions and source signatures of an industrial facility
Journal name Environmental Science and Technology   Check publisher's open access policy
ISSN 0013-936X
Publication date 2006-01-01
Sub-type Article (original research)
DOI 10.1021/es048337e
Open Access Status
Volume 40
Issue 3
Start page 803
End page 814
Total pages 12
Place of publication United States
Publisher American Chemical Society
Language eng
Subject C1
321299 Public Health and Health Services not elsewhere classified
730210 Environmental health
Abstract 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 (CMDs) 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 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) x 10(2) 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 concentration, while high compared to the clean environment concentration, is not significant when compared to concentrations generally encountered in the urban environment of Brisbane.
Keyword Engineering, Environmental
Environmental Sciences
Vehicle Emissions
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

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Created: Wed, 15 Aug 2007, 20:34:26 EST