Quantitative Assessment of Bio-Aerosols Contamination in Indoor Air of University Dormitory Rooms

Fekadu, Samuel; Ejeso, Amanuel; Derseh, Fikirte Aklilu

doi:10.12816/0024691

Cited by 25 publications

(34 citation statements)

References 21 publications

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“…This range was however similar to two previously published reports on air quality in Port Harcourt (Wemedo et al, 2012;Agbagwa and Onyeamachi, 2014), which reported ranges of 1230 -6660 and 1500 -12540 respectively. Also, these ranges were similar to those of several studies carried out in Ethiopia, which noted microbial loads with ranges of 117 -7284, 397 -2595, 511 -9960 and3106 -9733 (Kabir et al, 2016;Hayleeyesus and Manaye, 2014;Hayleeyesus et al, 2015;Fekadu and Getachewu, 2015).…”

Section: Literature Review/summary Of Literaturesupporting

confidence: 87%

Microbial Air Quality in Port Harcourt, Nigeria

Victor¹

2017

Int.J.Curr.Microbiol.App.Sci

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Section: Literature Review/summary Of Literaturesupporting

confidence: 87%

Microbial Air Quality in Port Harcourt, Nigeria

Victor¹

2017

Int.J.Curr.Microbiol.App.Sci

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“…The possible associations between exposure to bioaerosols and some specific cancers have been reported (Hayleeyesus et al, 2015). Johnson and Choi (2012) reviewed lung cancer risk of workers in the meat/poultry industry.…”

Section: Cancermentioning

confidence: 99%

Airborne bioaerosols and their impact on human health

Kim

Kabir²,

Jahan

2018

Journal of Environmental Sciences

351

200

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Bioaerosols consist of aerosols originated biologically such as metabolites, toxins, or fragments of microorganisms that are present ubiquitously in the environment. International interests in bioaerosols have increased rapidly to broaden the pool of knowledge on their identification, quantification, distribution, and health impacts (e.g., infectious and respiratory diseases, allergies, and cancer). However, risk assessment of bioaerosols based on conventional culture methods has been hampered further by several factors such as: (1) the complexity of microorganisms or derivatives to be investigated; (2) the purpose, techniques, and locations of sampling; and (3) the lack of valid quantitative criteria (e.g., exposure standards and dose/effect relationships). Although exposure to some microbes is considered to be beneficial for health, more research is needed to properly assess their potential health hazards including inter-individual susceptibility, interactions with non-biological agents, and many proven/unproven health effects (e.g., atopy and atopic diseases).

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“…A new bioaerosols collection was performed in September of 2019 using the passive and active sampling procedures simultaneously to calculate their concentrations (in CFU m −3 ) since the equations found in the literature for the settle plate method using the colony-forming units (CFUs) presented different results 94,104,105 . Therefore, we established a relationship based on the results obtained from both sampling techniques to calculate the bioaerosols concentrations for the previous passive samplings.…”

Section: Study Area Characterizationmentioning

confidence: 99%

Assessment of airborne particles and bioaerosols concentrations in a waste recycling environment in Brazil

Wikuats

Duarte

Prates

et al. 2020

Sci Rep

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This study aims to assess the concentrations of size-fractioned particle mass (PM1.0, PM2.5, PM4.0, PM10) and number (PNC0.3, PNC0.5, PNC1.0, PNC2.5), bacteria, and fungi in a Materials Recycling Facility (MRF) in Brazil. The measurements were performed inside the waste processing shed (P1) and in the outdoor environment (P2) during working days in winter and spring of 2017, and summer of 2019. A total of 2,400 min of PM, 1,440 min of PNC, and 216 samples of bioaerosols were collected in the morning and afternoon. P1 has the strongest air contamination with mean values of 475.5 ± 563.7 µg m−3 for PM10, 58.6 ± 36.0 cm−3 for PNC0.3, 1,088.8 ± 825.2 colony-forming units per cubic meter (CFU m−3) for bacteria, and 2,738.3 ± 1,381.3 CFU m−3 for fungi. The indoor/outdoor ratios indicated the large influence of indoor sources due to the activities performed inside P1 that promote the generation and resuspension of pollutants. Gram-positive bacteria dominated with 58.6% of indoor samples. Overall, our results show a critical indoor air quality situation in a Brazilian MRF, which may cause several health risks for waste pickers. Finally, we call attention to the lack of occupational exposure limits for bioaerosols in industrial workplaces and mainly in MRFs.

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Quantitative Assessment of Bio-Aerosols Contamination in Indoor Air of University Dormitory Rooms

Cited by 25 publications

References 21 publications

Microbial Air Quality in Port Harcourt, Nigeria

Microbial Air Quality in Port Harcourt, Nigeria

Airborne bioaerosols and their impact on human health

Assessment of airborne particles and bioaerosols concentrations in a waste recycling environment in Brazil

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