Cargando…

Background Concentrations of Cultivable, Mesophilic Bacteria and Dust Particles in the Air in Urban, Rural and Mountain Regions

Particulate air components can be of anthropogenic or natural origin. It is assumed that in different geographical areas varying concentrations of mesophilic bacteria are present in the ambient air. The aim of this study was to determine the background concentrations of airborne culturable mesophili...

Descripción completa

Detalles Bibliográficos
Autores principales: Haas, Doris, Kriso, Angela, Fritz, Theresa, Galler, Herbert, Habib, Juliana, Ilieva, Mihaela, Kropsch, Michael, Ofner-Kopeinig, Petra, Stonitsch, Martin, Strasser, Andreas, Zentner, Eduard, Reinthaler, Franz F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7767401/
https://www.ncbi.nlm.nih.gov/pubmed/33371355
http://dx.doi.org/10.3390/ijerph17249572
_version_ 1783628949977300992
author Haas, Doris
Kriso, Angela
Fritz, Theresa
Galler, Herbert
Habib, Juliana
Ilieva, Mihaela
Kropsch, Michael
Ofner-Kopeinig, Petra
Stonitsch, Martin
Strasser, Andreas
Zentner, Eduard
Reinthaler, Franz F.
author_facet Haas, Doris
Kriso, Angela
Fritz, Theresa
Galler, Herbert
Habib, Juliana
Ilieva, Mihaela
Kropsch, Michael
Ofner-Kopeinig, Petra
Stonitsch, Martin
Strasser, Andreas
Zentner, Eduard
Reinthaler, Franz F.
author_sort Haas, Doris
collection PubMed
description Particulate air components can be of anthropogenic or natural origin. It is assumed that in different geographical areas varying concentrations of mesophilic bacteria are present in the ambient air. The aim of this study was to determine the background concentrations of airborne culturable mesophilic bacteria and particulate matter in the ambient air. Furthermore, the association between their concentrations and some environmental factors was analysed. In the period from July to October 2019, concentrations of mesophilic bacteria and dust particles were measured in urban, rural and mountain areas using the single-stage air sampler and the particle counter. The concentrations of bacteria and dust particles in the air were counted as number of Colony Forming Units per cubic metre (CFU/m(3)) and particles per cubic metre (pa/m(3)). Staphylococcus sp. were identified. The median values of the cultivated mesophilic bacteria at 30 °C and 37 °C were 7.1 × 10(2) CFU/m(3) and 2.3 × 10(1) CFU/m(3) in mountain regions, 1.3 × 10(2) CFU/m(3) and 6.9 × 10(1) CFU/m(3) in rural regions and 2.1 × 10(2) CFU/m(3) and 6.5 × 10(1) CFU/m(3) in urban regions. The median of Staphylococcus sp. was 2.5 × 10(0) CFU/m(3) in alpine areas and 7.5 × 10(0) CFU/m(3) in urban and rural areas. Higher bacterial concentrations were measured in sunshine and in windy weather. A relationship was observed between the concentrations of airborne mesophilic bacteria and the coarse particles in all three areas. The present study determined values between 5.0 × 10(0) and 4.6 × 10(2) CFU/m(3) as natural background concentrations of airborne mesophilic bacteria and 1.2 × 10(7) pa/m(3) and 6.5 × 10(4) pa/m(3) for fine and coarse particles, respectively. These results can be proposed as baseline for the assessment of the emission sources of mesophilic bacteria for summer and early autumn.
format Online
Article
Text
id pubmed-7767401
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-77674012020-12-28 Background Concentrations of Cultivable, Mesophilic Bacteria and Dust Particles in the Air in Urban, Rural and Mountain Regions Haas, Doris Kriso, Angela Fritz, Theresa Galler, Herbert Habib, Juliana Ilieva, Mihaela Kropsch, Michael Ofner-Kopeinig, Petra Stonitsch, Martin Strasser, Andreas Zentner, Eduard Reinthaler, Franz F. Int J Environ Res Public Health Article Particulate air components can be of anthropogenic or natural origin. It is assumed that in different geographical areas varying concentrations of mesophilic bacteria are present in the ambient air. The aim of this study was to determine the background concentrations of airborne culturable mesophilic bacteria and particulate matter in the ambient air. Furthermore, the association between their concentrations and some environmental factors was analysed. In the period from July to October 2019, concentrations of mesophilic bacteria and dust particles were measured in urban, rural and mountain areas using the single-stage air sampler and the particle counter. The concentrations of bacteria and dust particles in the air were counted as number of Colony Forming Units per cubic metre (CFU/m(3)) and particles per cubic metre (pa/m(3)). Staphylococcus sp. were identified. The median values of the cultivated mesophilic bacteria at 30 °C and 37 °C were 7.1 × 10(2) CFU/m(3) and 2.3 × 10(1) CFU/m(3) in mountain regions, 1.3 × 10(2) CFU/m(3) and 6.9 × 10(1) CFU/m(3) in rural regions and 2.1 × 10(2) CFU/m(3) and 6.5 × 10(1) CFU/m(3) in urban regions. The median of Staphylococcus sp. was 2.5 × 10(0) CFU/m(3) in alpine areas and 7.5 × 10(0) CFU/m(3) in urban and rural areas. Higher bacterial concentrations were measured in sunshine and in windy weather. A relationship was observed between the concentrations of airborne mesophilic bacteria and the coarse particles in all three areas. The present study determined values between 5.0 × 10(0) and 4.6 × 10(2) CFU/m(3) as natural background concentrations of airborne mesophilic bacteria and 1.2 × 10(7) pa/m(3) and 6.5 × 10(4) pa/m(3) for fine and coarse particles, respectively. These results can be proposed as baseline for the assessment of the emission sources of mesophilic bacteria for summer and early autumn. MDPI 2020-12-21 2020-12 /pmc/articles/PMC7767401/ /pubmed/33371355 http://dx.doi.org/10.3390/ijerph17249572 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Haas, Doris
Kriso, Angela
Fritz, Theresa
Galler, Herbert
Habib, Juliana
Ilieva, Mihaela
Kropsch, Michael
Ofner-Kopeinig, Petra
Stonitsch, Martin
Strasser, Andreas
Zentner, Eduard
Reinthaler, Franz F.
Background Concentrations of Cultivable, Mesophilic Bacteria and Dust Particles in the Air in Urban, Rural and Mountain Regions
title Background Concentrations of Cultivable, Mesophilic Bacteria and Dust Particles in the Air in Urban, Rural and Mountain Regions
title_full Background Concentrations of Cultivable, Mesophilic Bacteria and Dust Particles in the Air in Urban, Rural and Mountain Regions
title_fullStr Background Concentrations of Cultivable, Mesophilic Bacteria and Dust Particles in the Air in Urban, Rural and Mountain Regions
title_full_unstemmed Background Concentrations of Cultivable, Mesophilic Bacteria and Dust Particles in the Air in Urban, Rural and Mountain Regions
title_short Background Concentrations of Cultivable, Mesophilic Bacteria and Dust Particles in the Air in Urban, Rural and Mountain Regions
title_sort background concentrations of cultivable, mesophilic bacteria and dust particles in the air in urban, rural and mountain regions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7767401/
https://www.ncbi.nlm.nih.gov/pubmed/33371355
http://dx.doi.org/10.3390/ijerph17249572
work_keys_str_mv AT haasdoris backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions
AT krisoangela backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions
AT fritztheresa backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions
AT gallerherbert backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions
AT habibjuliana backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions
AT ilievamihaela backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions
AT kropschmichael backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions
AT ofnerkopeinigpetra backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions
AT stonitschmartin backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions
AT strasserandreas backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions
AT zentnereduard backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions
AT reinthalerfranzf backgroundconcentrationsofcultivablemesophilicbacteriaanddustparticlesintheairinurbanruralandmountainregions