Madsen, A.M.;
Moslehi-Jenabian, S.;
Frankel, M.;
White, J.K.;
Frederiksen, M.W.;
(2023)
Airborne bacterial species in indoor air and association with physical factors.
UCL Open: Environment
, 5
, Article 3. 10.14324/111.444/ucloe.000056.
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Abstract
The aim of this study is to obtain knowledge about which cultivable bacterial species are present in indoor air in homes, and whether the concentration and diversity of airborne bacteria are associated with different factors. Measurements have been performed for one whole year inside different rooms in five homes and once in 52 homes. Within homes, a room-to-room variation for concentrations of airborne bacteria was found, but an overlap in bacterial species was found across rooms. Eleven species were found very commonly and included: Acinetobacter lowffii, Bacillus megaterium, B. pumilus, Kocuria carniphila, K. palustris, K. rhizophila, Micrococcus flavus, M. luteus, Moraxella osloensis and Paracoccus yeei. The concentrations of Gram-negative bacteria in general and the species P. yeei were significantly associated with the season with the highest concentrations in spring. The concentrations of P. yeei, K. rhizophila and B. pumilus were associated positively with relative humidity (RH), and concentrations of K. rhizophila were associated negatively with temperature and air change rate (ACR). Micrococcus flavus concentrations were associated negatively with ACR. Overall, this study identified species which are commonly present in indoor air in homes, and that the concentrations of some species were associated with the factors: season, ACR and RH.
| Type: | Article |
|---|---|
| Title: | Airborne bacterial species in indoor air and association with physical factors |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.14324/111.444/ucloe.000056 |
| Publisher version: | https://doi.org/10.14324/111.444/ucloe.000056 |
| Language: | English |
| Additional information: | © 2023 The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution Licence (CC BY) 4.0 https://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited. |
| Keywords: | Bacillus megaterium, bacteria, exposure, home environment, indoor air, indoor humidity, MALDI-TOF MS, Paracoccus yeei, room-to-room variation, seasonality |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10169305 |
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