Concentrations of Atmospheric Culturable Bioaerosols at Mountain and Seashore Sites

Lee, Byung Uk; Lee, Gunwoong; Heo, Ki Joon; Jung, Jaewoon

doi:10.3390/ijerph16224323

Cited by 5 publications

(4 citation statements)

References 18 publications

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“…Lee et al, 2019 conducted measurements of bioaerosols at sites in the mountains and at the seashore and used the data of an urban area as a reference. Their results showed lower values of bioaerosols at the seashore and urban sites than in the mountains sites [ 30 ]. The authors agree with Fröhlich-Nowoisky et al (2016) who reported that trees and other living organisms in the mountains could produce high amounts of bioaerosols [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

“…Mesophilic bacterial concentrations are not necessarily lower in mountain regions than in other areas. Lee et al (2019) found higher mesophilic bacterial concentrations of 7.8 × 10 2 CFU/m 3 in a mountain region of Korea than in the coastal area [ 30 ]. Furthermore, in the Qinling Mountains in China, the concentration of airborne cultivable mesophilic bacteria was of 3.8 × 10 3 ± 1.8 × 10 3 CFU/m 3 which was higher than those in the urban environment [ 52 ].…”

Section: Discussionmentioning

confidence: 99%

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

Haas

Kriso

Fritz

et al. 2020

IJERPH

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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/m3) and particles per cubic metre (pa/m3). Staphylococcus sp. were identified. The median values of the cultivated mesophilic bacteria at 30 °C and 37 °C were 7.1 × 102 CFU/m3 and 2.3 × 101 CFU/m3 in mountain regions, 1.3 × 102 CFU/m3 and 6.9 × 101 CFU/m3 in rural regions and 2.1 × 102 CFU/m3 and 6.5 × 101 CFU/m3 in urban regions. The median of Staphylococcus sp. was 2.5 × 100 CFU/m3 in alpine areas and 7.5 × 100 CFU/m3 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 × 100 and 4.6 × 102 CFU/m3 as natural background concentrations of airborne mesophilic bacteria and 1.2 × 107 pa/m3 and 6.5 × 104 pa/m3 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.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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

Haas

Kriso

Fritz

et al. 2020

IJERPH

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“…Biomonitoring was performed at 30 points in different wards in the hospital, such as the internal medicine, surgical ward, general ward, treatment rooms, patient rooms, and central supply room (CSR), in which equipment and medical instruments are sterilized and stored. Airborne bacteria and fungi were selected for measurement because they are the most representative bioaerosols in the general environment on the Korean Peninsula [ 15 , 16 ]. Particle numbers were also monitored in real-time in order to analyze the correlation between particle numbers and bioaerosol concentration.…”

Section: Methodsmentioning

confidence: 99%

Prediction Model for Airborne Microorganisms Using Particle Number Concentration as Surrogate Markers in Hospital Environment

Seo

Jeon

Choi

et al. 2020

IJERPH

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Indoor microbiological air quality, including airborne bacteria and fungi, is associated with hospital-acquired infections (HAIs) and emerging as an environmental issue in hospital environment. Many studies have been carried out based on culture-based methods to evaluate bioaerosol level. However, conventional biomonitoring requires laborious process and specialists, and cannot provide data quickly. In order to assess the concentration of bioaerosol in real-time, particles were subdivided according to the aerodynamic diameter for surrogate measurement. Particle number concentration (PNC) and meteorological conditions selected by analyzing the correlation with bioaerosol were included in the prediction model, and the forecast accuracy of each model was evaluated by the mean absolute percentage error (MAPE). The prediction model for airborne bacteria demonstrated highly accurate prediction (R2 = 0.804, MAPE = 8.5%) from PNC1-3, PNC3-5, and PNC5-10 as independent variables. Meanwhile, the fungal prediction model showed reasonable, but weak, prediction results (R2 = 0.489, MAPE = 42.5%) with PNC3-5, PNC5-10, PNC > 10, and relative humidity. As a result of external verification, even when the model was applied in a similar hospital environment, the bioaerosol concentration could be sufficiently predicted. The prediction model constructed in this study can be used as a pre-assessment method for monitoring microbial contamination in indoor environments.

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“…16 Significantly higher concentrations of bacteria and fungi culturable bioaerosols were found at mountain site as compared to urban and seashore sites during April month in Korean Peninsula region. 17 Fungii were estimated as 805 102 and 75 CFU/m 3 at the mountain, urban and seashore sites respectively while bacteria were as 775, 232 and 150 CFU/m 3 at the mountain, urban and seashore sites respectively. Bacteria levels were drastically lower during February month at these sites.…”

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confidence: 95%

Air Quality Implications of Fast Growing Livestock and Compost Farming: Need for Bioaerosols Monitoring Networks

Kulshrestha

2023

Curr. World Environ

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Small airborne particles ranging from 0.02-100 µm in size having biological origin are referred as bioaerosols. These include fungi, bacteria, pollens, spores, algae, protozoa and viruses, lichen and mycotoxins. 1 Derived from plants and animals, these living or dead micro particles can be transported by air to a larger distance affecting air quality. 2 We get infected through inhalation. One interesting example of transmission through air inhalation is SARS COV-2 virus. [3][4][5] Sometimes their contributions reach upto 50% in the total aerosols. 6 Since, these particles are airborne, humans inhale these during breathing. 7 Residential and occupational buildings especially with insulation having poor ventilation are reported having human health effects. Sick building syndrome is more associated with health effects of bioaerosols. However, due to complex nature of human system, health risks due to the effect of the bioaerosols for bronchitis diseases, infections, allergies, and other illnesses are not properly understood. Impact of bioaerosols on crop has also been reported due to emerging fungal diseases having a possible threat to food security. 8

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Concentrations of Atmospheric Culturable Bioaerosols at Mountain and Seashore Sites

Cited by 5 publications

References 18 publications

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

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

Prediction Model for Airborne Microorganisms Using Particle Number Concentration as Surrogate Markers in Hospital Environment

Air Quality Implications of Fast Growing Livestock and Compost Farming: Need for Bioaerosols Monitoring Networks

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