Microbiological indoor air quality of hospital buildings with different ventilation systems, cleaning frequencies and occupancy levels

Hassan, Ahmad; Zeeshan, Muhammad

doi:10.1016/j.apr.2022.101382

Cited by 13 publications

(5 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Air quality in Chinese cities has become a significant concern over the past decade, drawing considerable attention from official organizations. According to the air quality index, only 73 out of the 338 surveyed cities in China met the criteria for satisfactory air quality (Hassan & Zeeshan, 2022). The country's population and industrial activities have also increased, leading to higher energy and resource consumption and subsequent environmental degradation (Hao et al, 2020).…”

Section: Data Source and Methodological Frameworkmentioning

confidence: 99%

From pollution to progress: Exploring the role of cleaner technology, energy efficiency and sustainable production in reducing PM2.5 levels in China

et al. 2023

View full text Add to dashboard Cite

Air pollution, particularly particulate matter (PM2.5) levels, was a significant focus at the COP26 summit. Rampant production practices and changing lifestyles contribute to the issue globally. China's rapid urbanization and reliance on fossil fuels significantly threaten global health sustainability. This study aims to evaluate China's environmental agenda and offer policy recommendations for achieving a green and clean environment. To accomplish this, the study assesses the crucial factors contributing to China's air pollution levels, focusing specifically on fine PM2.5 from 1975 to 2020. By implementing the ARDL bounds testing approach, the study confirmed a non‐linear relationship between per capita income and PM2.5, demonstrating an inverted U‐shaped curve with a turning point observed at a per capita income level of US$3030 in the short run. Furthermore, a positive correlation between these variables was detected in the long run. The study also revealed that rapid urbanization initially leads to increased PM2.5 concentrations, whereas it has a decreasing effect in the long term. To progress towards sustainable production and consumption, China has embraced efficient environmental technologies and increasing clean energy sources in its production mix. Leveraging these strategies, the country strives to achieve its decarbonization agenda and ensure a cleaner future. By conducting an ex ante analysis, this study identified ecological technologies, renewable energy demand and oil resource rents as critical influencers on China's air pollution levels over the next decade. The findings underscore the pressing need to embrace alternative energy sources, eco‐friendly technologies and resource conservation to tackle air pollution effectively and accomplish China's decarbonization objectives. It is imperative to prioritize adopting sustainable practices, ensuring a cleaner environment for current and future generations.

show abstract

Section: Data Source and Methodological Frameworkmentioning

confidence: 99%

From pollution to progress: Exploring the role of cleaner technology, energy efficiency and sustainable production in reducing PM2.5 levels in China

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The indoor air has been the main source of bioaerosols [122][123][124]. The bioaerosol concentrations in the indoor environments depend upon the building material, furniture, indoor inhabitants, and air from outside [125][126][127]. The indoor animals/pets in the rural and urban environments have produced bioaerosols in large amounts [128].…”

Section: Bioaerosols and Airborne Microflora In Residential Environmentsmentioning

confidence: 99%

Impact of Indoor Air Pollution in Pakistan—Causes and Management

et al. 2023

View full text Add to dashboard Cite

This state-of-the-art review is designed to provide a factual analysis of indoor air pollution in Pakistan. Primarily, the main sources of indoor air pollution and related air pollutants were analyzed. Key sources of indoor air pollution include household energy sources (biomass, wood, coal, tobacco, and low temperatures) producing particulate matter (PM), dust particles, smoke, COx, noxious gases, bioaerosols, airborne microflora, and flame retardants. According to the literature, rural regions of Pakistan using biomass indoor fuels have a high indoor PM concentration in the range of 4000–9000 μg/m3. In rural/urban regions, indoor smoking also leads to high PM2.5 levels of ~1800 μg/m3, which can cause pulmonary infections. In hospitals, PM concentrations were detected up to 1000 μg/m3, causing repeated infections in patients. Indoor ingestion of dust containing polychlorinated biphenyl concentrations was observed at high levels (~8.79–34.39 ng/g) in cities; this can cause serious health effects such as cancer risks and a loss of working productivity. Moreover, indoor microflora and bacteria (~10,000–15,000 cfu m−3) in urban/rural regions cause respiratory/cancer risks. In this context, indoor air quality (IAQ) monitoring and management strategies have been somewhat developed; however, their implementation in Pakistan’s rural/urban indoor environments is still needed. Various challenges were identified for monitoring/regulating IAQ. There is a firm need for industry–academia–research cooperation and for the involvement of government/agencies to support indoor air pollution control/management and for intervention strategies.

show abstract

“…These two groups include etiologic diseases, and the variation of fungal communities according to indoor environments and their relationship with temporal and spatial changes were demonstrated [3]. Studies also focused on ventilation systems as an additional factor related to indoor aeromycoflora [4,5]. The relationship between asthma patients and IAF was validated [6,7].…”

Section: Introductionmentioning

confidence: 99%

A Cross Sectional Study on the 24 – Hour Variation of Fungal Pollution in the Atmosphere of Erbil City, Iraq

Aljoborey,

Ahmed

et al. 2023

ijmst

View full text Add to dashboard Cite

Airborne fungi are an important part of aerobiological particles; this group includes several etiologic fungi for humans, animals, and plants. Meteorological parameters as well as plantations are actively influencing the density of outdoor airborne fungi. The current study followed the plate exposure method to collect bihourly air samples for 3 days between April 22 and July 7, 2023. The site of sample collection is 15 meters high in the centre of Erbil city. Sabouraud’s dextrose agar was used. Plates were exposed for 15 minutes from 7 a.m. to 5 a.m. the following day. Plates were kept at lab temperature for 3 weeks and examined daily for visible fungal growth. Fungi were morphologically identified at the genus level. A total of 322 colonies belonging to 10 identified genera, as well as sterile mycelia SM, sclerotia bodies, chlamydospore colonies, and creamy yeast colonies, were Hyphomycetes, which represented 6 genera, Ascomycetes 2, Zygomycetes, and Basidiomycetes, one for each.SM group showed the highest frequency (F% =48.2%) and occurrence (O% =100%). Aspergillus spp. has the second incidence level (F=12.7% and O%=91.6%) followed by Alternaria sp. (F=9.3% and O= 25%).

show abstract

Microbiological indoor air quality of hospital buildings with different ventilation systems, cleaning frequencies and occupancy levels

Cited by 13 publications

References 69 publications

From pollution to progress: Exploring the role of cleaner technology, energy efficiency and sustainable production in reducing PM2.5 levels in China

From pollution to progress: Exploring the role of cleaner technology, energy efficiency and sustainable production in reducing PM2.5 levels in China

Impact of Indoor Air Pollution in Pakistan—Causes and Management

A Cross Sectional Study on the 24 – Hour Variation of Fungal Pollution in the Atmosphere of Erbil City, Iraq

Contact Info

Product

Resources

About