Size-selective assessment of airborne particles in swine confinement building with the UVAPS

Agranovski, Victoria, Ristovski, Zoran, Blackall, Patrick J. and Morawska, Lidia (2004) Size-selective assessment of airborne particles in swine confinement building with the UVAPS. Atmospheric Environment, 38 23: 3893-3901. doi:10.1016/j.atmosenv.2004.02.058


Author Agranovski, Victoria
Ristovski, Zoran
Blackall, Patrick J.
Morawska, Lidia
Title Size-selective assessment of airborne particles in swine confinement building with the UVAPS
Journal name Atmospheric Environment   Check publisher's open access policy
ISSN 1352-2310
1873-2844
Publication date 2004-07
Sub-type Article (original research)
DOI 10.1016/j.atmosenv.2004.02.058
Volume 38
Issue 23
Start page 3893
End page 3901
Total pages 9
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Formatted abstract
The ultraviolet aerodynamic particle sizer (UVAPS) is a novel aerosol counter for real-time monitoring of viable bioaerosols. The previous validation studies on the UVAPS were either laboratory based or were conducted outdoor with the artificially generated aerosols. In this study, the spectrometer was applied to investigate particulate pollution inside a swine confinement building (SCB). Real-time capabilities of the instrument were used to investigate the effect of on-farm-activities, such as an effluent flushing with recycled water, on aerosols load inside the SCB. In addition to the UVAPS, monitoring of viable bioaerosols (bacteria and fungi) was simultaneously conducted with the six-stage Andersen microbial impactor and the AGI-30 impingers. The UVAPS measurements showed that the concentrations of both viable (fluorescent) and total (fluorescent and non-fluorescent) particles inside the SCB were in order of 106-107particlesm-3. These concentrations were approximately seven times the outside concentrations for total particles and up to 12 times for viable particles. Approximately 95% of both total and viable particles were respirable (<7μm) and approximately 60% of total and 50% of viable particles accounted for the fine particle fraction (<2.5μm). The concentration of culturable bacteria and fungi ranged from 1.12×10 5 to 5.17×105CFUm-3 and from 1.12×103 to 2.79×103CFUm-3, respectively. Approximately 50-80% of airborne particles which carried culturable fungi were within the respirable size range. The concentration of viable particles measured with the UVAPS was at least one order of magnitude higher than the concentration of the culturable microorganisms measured with the AGI-30 impingers. Nevertheless, the trends in the concentration changes of viable bioaerosols measured with the UVAPS followed the trends in the concentration changes of the culturable airborne microorganisms quite adequately. Thus, it was concluded that the UVAPS is an appropriate method for investigating the dynamic of viable bioaerosols in the SCBs. The results obtained in this study assist in advancing an understanding of the UVAPS performance in the real-life agricultural settings. In addition, the data provide a new insight on the particles size distribution inside the SCB, depending on their nature.
Keyword The UVAPS
Swine confinement buildings
Viable bioaerosols
Particle size
Bacteria
Fungi
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
 
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Created: Mon, 07 Mar 2011, 14:36:06 EST