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Open AccessArticle

Assessment of Bacterial Aerosol in a Preschool, Primary School and High School in Poland

1
Department of Air Protection, Silesian University of Technology, 22B Konarskiego St., 44-100 Gliwice, Poland
2
Adam Mickiewicz High School, Mickiewicza St. 11, 40-092 Katowice, Poland
3
Department of Environmental Health Science & Technology, Jimma University, 251 Jimma, Ethiopia
*
Author to whom correspondence should be addressed.
Atmosphere 2018, 9(3), 87; https://doi.org/10.3390/atmos9030087
Received: 31 January 2018 / Revised: 19 February 2018 / Accepted: 23 February 2018 / Published: 27 February 2018
(This article belongs to the Special Issue Indoor Air Pollution)
The issue of healthy educational buildings is a global concern because children are particularly at risk of lung damage and infection caused by poor indoor air quality (IAQ). This article presents the results of a preliminary study of the concentration and size distribution of bacterial aerosol in three educational buildings: a preschool, primary school, and high school. Sampling was undertaken in the classrooms with an Andersen six-stage impactor (with aerodynamic cut-off diameters of 7.0, 4.7, 3.3, 2.1, 1.1 and 0.65 μm) during spring 2016 and 2017, as well as the outside of the buildings. After incubation, bioaerosol particles captured on nutrient media on Petri dishes were quantitatively evaluated and qualitatively identified. The highest average concentration of bacterial aerosol was inside the primary school building (2205 CFU/m3), whereas the lowest average concentration of indoor culturable bacteria was observed in the high school building (391 CFU/m3). Using the obtained data, the exposure dose (ED) of the bacterial aerosol was estimated for children attending each educational level. The most frequently occurring species in the sampled bacterial aerosol were Gram-positive cocci in the indoor environment and Gram-positive rod-forming endospores in the outdoor environment. View Full-Text
Keywords: bioaerosol; size distribution; monitoring; indoor air quality; preschool; primary school; high school bioaerosol; size distribution; monitoring; indoor air quality; preschool; primary school; high school
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Brągoszewska, E.; Mainka, A.; Pastuszka, J.S.; Lizończyk, K.; Desta, Y.G. Assessment of Bacterial Aerosol in a Preschool, Primary School and High School in Poland. Atmosphere 2018, 9, 87.

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