Sources and dynamics of fluorescent particles in hospitals

Pereira, M. L., Knibbs, L. D., He, C., Grzybowski, P., Johnson, G. R., Huffman, J. A., Bell, S. C., Wainwright, C. E., Matte, D. L., Dominski, F. H., Andrade, A. and Morawska, L. (2017) Sources and dynamics of fluorescent particles in hospitals. Indoor Air, . doi:10.1111/ina.12380

Author Pereira, M. L.
Knibbs, L. D.
He, C.
Grzybowski, P.
Johnson, G. R.
Huffman, J. A.
Bell, S. C.
Wainwright, C. E.
Matte, D. L.
Dominski, F. H.
Andrade, A.
Morawska, L.
Title Sources and dynamics of fluorescent particles in hospitals
Journal name Indoor Air   Check publisher's open access policy
ISSN 0905-6947
Publication date 2017-05-05
Year available 2017
Sub-type Article (original research)
DOI 10.1111/ina.12380
Open Access Status File (Author Post-print)
Total pages 13
Place of publication Hoboken, NJ United States
Publisher Wiley-Blackwell Publishing
Language eng
Formatted abstract
Fluorescent particles can be markers of bioaerosols and are therefore relevant to nosocomial infections. To date, little research has focused on fluorescent particles in occupied indoor environments, particularly hospitals. In this study, we aimed to determine the spatial and temporal variation of fluorescent particles in two large hospitals in Brisbane, Australia (one for adults and one for children). We used an Ultraviolet Aerodynamic Particle Sizer (UVAPS) to identify fluorescent particle sources, as well as their contribution to total particle concentrations. We found that the average concentrations of both fluorescent and non-fluorescent particles were higher in the adults’ hospital (0.06×106 and 1.20×106 particles/m3, respectively) than in the children's hospital (0.03×106 and 0.33×106 particles/m3, respectively) (P<.01). However, the proportion of fluorescent particles was higher in the children's hospital. Based on the concentration results and using activity diaries, we were able to identify sources of particle production within the two hospitals. We demonstrated that particles can be easily generated by a variety of everyday activities, which are potential sources of exposure to pathogens. Future studies to further investigate their role in nosocomial infection are warranted.
Keyword Application of UVAPS
Fluorescent airborne particles
Indoor air in hospitals
Particle concentration and size distribution
Real-time bioaerosol detection
Sources to indoor aerosol
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

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Created: Mon, 13 Mar 2017, 12:11:15 EST by Luke Knibbs on behalf of School of Public Health