Deposition rates of fungal spores in indoor environments, factors effecting them and comparison with non-biological aerosols

Kanaani, Hussein, Hargreaves, Megan, Ristovski, Zoran, & Morawska, Lidia (2008) Deposition rates of fungal spores in indoor environments, factors effecting them and comparison with non-biological aerosols. Atmospheric Environment, 42(30), pp. 7141-7154.

View at publisher


Particle deposition indoors is one of the most important factors that determine the effect of particle exposure on human health. While many studies have investigated the particle deposition of non-biological aerosols, few have investigated biological aerosols and even fewer have studied fungal spore deposition indoors. The purpose of this study was, for the first time, to investigate the deposition rates of fungal particles in a chamber of 20.4 m3 simulating indoor environments by: 1) releasing fungal particles into the chamber, in sufficient concentrations so the particle deposition rates can be statistically analysed; 2) comparing the obtained deposition rates with non-bioaerosol particles of similar sizes, investigated under the same conditions; and 3) investigating the effects of ventilation on the particle deposition rates. The study was conducted for a wide size range of particle sizes (0.54 – 6.24 µm), at three different air exchange rates (0.009, 1.75 and 2.5 h-1). An Ultraviolet Aerodynamic Particle Sizer Spectrometer (UVAPS) was used to monitor the particle concentration decay rate. The study showed that the deposition rates of fungal spores (Aspergillus niger and Penicillium species) and the other aerosols (canola oil and talcum powder) were similar, especially at very low air exchange rates (in the order of 0.009). Both the aerosol and the bioaerosol deposition rates were found to be a function of particle size. The results also showed increasing deposition rates with increasing ventilation rates, for all particles under investigation. These conclusions are important in understanding the dynamics of fungal spores in the air.

Impact and interest:

20 citations in Scopus
20 citations in Web of Science®
Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

563 since deposited on 31 Oct 2008
22 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 15402
Item Type: Journal Article
Refereed: Yes
Keywords: deposition rate, air exchange rates (AER), fungal particles, fluorescent percentage, ventilation rate
DOI: 10.1016/j.atmosenv.2008.05.059
ISSN: 1352-2310
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
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2008 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 31 Oct 2008 00:00
Last Modified: 29 Feb 2012 13:50

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page