OPEN ACCESS

Articles online

Assessment of Airborne Particles in Indoor Environments: Applicability of Particle Counting for Prediction of Bioaerosol Concentrations

Category: Bioaerosols

Volume: 16 | Issue: 8 | Pages: 1903-1910
DOI: 10.4209/aaqr.2015.08.0528
PDF | RIS | BibTeX

Seyed Hamed Mirhoseini1, Mahnaz Nikaeen 2, Kazuo Satoh3, Koichi Makimur3

  • 1 Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arak, Iran
  • 2 Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
  • 3 Teikyo University Institute of Medical Mycology, Tokyo, Japan

Highlights

The highest bacterial levels were observed in residence apartments.
Fungal levels were found to be generally lower than those of airborne bacteria.
Andersen biosampler yields more representative results of bioaerosol concentrations.
Particle counting could not take the place of bioaerosol measurements.


Abstract

Indoor bioaerosols have recently received considerable interest because of their impact on health. In this study, concentrations of bioaerosols in relation to airborne particulate matter in various indoor environments were investigated. The comparative performance of two common biosamplers, including the single-stage Andersen impactor and the all-glass impinger (AGI) for bioaerosol sampling, was also evaluated. The average levels of airborne bacteria and fungi sampled by Andersen were 516 and 176 colony forming units (CFU) m–3 and by AGI were 163 and 151 CFU m–3, respectively. The highest bacterial levels were measured in residence apartments. The most predominant bacteria were belonged to Staphylococcus sp. and Arthrobacter sp. The Andersen impactor appeared to yield fungal concentrations that were comparable to the results obtained using the AGI biosampler. Meanwhile, Andersen impactor counts for bacteria were significantly higher than those obtained by AGI. Particle count data generated by the optical particle counter indicated that 95% of airborne particles were < 1 µm in diameter. Statistical analysis revealed a significant correlation between particle counts of PM1 and concentrations of culturable airborne bacteria measured with the both bioaerosol samplers.

Based on these results, the Andersen impactor performed much better than the AGI for sampling airborne bioaerosols in low-contaminated indoor environments. Accurate measurement of microbial concentrations in indoor environments should be performed by bioaerosol monitoring; however, combining particle counting with bioaerosol sampling could provide prompt information about rapid variations of air quality.

Keywords

Bioaerosol Indoor Andersen impactor Impinger Particle counting


Related Article

Assessment of Indoor Bioaerosols in Public Spaces by Real-Time Measured Airborne Particles

Hsiao-Lin Huang , Mei-Kuei Lee, Hao-Wun Shih
Volume: 17 | Issue: 9 | Pages: 2276-2288
DOI: 10.4209/aaqr.2017.02.0089
PDF

Fungal Bioaerosol Exposure and its Effects on the Health of Mushroom and Vegetable Farm Workers in Taiwan

Yenni Gustiani Tarigan, Ruey-Yu Chen, Hsiu-Chen Lin, Chia-Yi Jung, Kraiwuth Kallawicha, Ta-Pang Chang, Po-Chen Hung, Chih-Yong Chen, Hsing Jasmine Chao
Volume: 17 | Issue: 8 | Pages: 2064-2075
DOI: 10.4209/aaqr.2016.09.0401
PDF | Supplemental material

Ambient Fungal Spore Concentration in a Subtropical Metropolis: Temporal Distributions and Meteorological Determinants

Kraiwuth Kallawicha, Yi-Chen Chen, H. Jasmine Chao, Wei-Chiang Shen, Bing-Yu Chen, Yu-Chen Chuan, Yue Leon Guo
Volume: 17 | Issue: 8 | Pages: 2051-2063
DOI: 10.4209/aaqr.2016.10.0450
PDF
;