Assessment of indoor air quality and their inter-association in hospitals of northern India—a cross-sectional study

Taushiba, Anam; Dwivedi, Samridhi; Zehra, Farheen; Shukla, Pashupati Nath; Lawrence, Alfred J.

doi:10.1007/s11869-023-01321-4

Cited by 12 publications

(3 citation statements)

References 65 publications

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“…A study conducted in three hospitals in Northern India demonstrated lower indoor PM 2.5 levels than outdoors. Their indoor PM 2.5 levels were correlated with outdoor levels like in our study and both those levels were higher than in our results [53]. IAQ of six hospitals in Lahore, Pakistan was studied.…”

Section: Comparison Of the Results Of Similar Past Studies With Our R...supporting

confidence: 73%

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Respiratory infection transmission risk and indoor air quality at outpatient departments and emergency treatment units of Sri Lankan teaching hospitals

Ehelepola,

Thilakarathna

2024

PLOS Glob Public Health

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Indoor carbon dioxide (CO2) concentration has been used as a proxy of the degree of ventilation and, by extension, as an indicator of the risk of contracting respiratory infections. No publications exist regarding indoor air quality (IAQ) parameters of Sri Lankan hospitals.We measured the levels of CO2 and seven other IAQ parameters during morning rush hours for three days, in outpatient departments (OPDs) and emergency treatment units (ETUs) of all 21 teaching hospitals of Sri Lanka. We measured the same parameters of outdoor air also. We calculated the mean values of those parameters. We looked for correlations between outdoors and OPD and ETU levels of selected air quality parameters.The average CO2 levels of outdoors, OPDs and ETUs respectively were 514ppm (ppm = parts per million), 749ppm and 795ppm. The average levels of PM2.5 (particulate matter with diameters <2.5μm) outdoors, OPDs and ETUs respectively, were 28.7μg/m3,32μg/m3 and 25.6 μg/m3. The average levels of PM10 (particulate matter with diameters <10μm) outdoors, OPDs and ETUs respectively, were 49.4μg/m3, 55.5μg/m3 and 47.9 μg/m3. The median levels of formaldehyde outdoors, OPDs and ETUs respectively, were 0.03mg/m3, 0.04mg/m3 and 0.08mg/m3. The median levels of total volatile organic compounds (VOC) outdoors, OPDs and ETUs respectively were 0.12mg/m3, 0.19mg/m3 and 0.38mg/m3.CO2 levels of air in OPDs and ETUs generally were below the national ceilings but above the ceilings used by some developed countries. Outdoors, OPDs and ETUs air contain PM10, PM2.5 levels higher than WHO ceilings, although below the national ceilings. VOC and formaldehyde levels are generally below the national ceilings. Air in OPDs and ETUs is hotter and humid than national ceilings. Outdoor PM10, PM2.5 levels influence OPDs and ETUs levels. We propose methods to reduce the risk of nosocomial respiratory infections and to improve IAQ of Sri Lankan OPDs and ETUs.

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Section: Comparison Of the Results Of Similar Past Studies With Our R...supporting

confidence: 73%

“…Further studies shall determine such ceilings appropriate for OPDs and ETUs of large hospitals of Sri Lanka. Limited published evidence and our results show that IAQ of OPDs and ETUs of Sri Lankan teaching hospitals is generally better than IAQ of hospitals of neighboring South Asian countries [52][53][54].…”

Section: Discussionmentioning

confidence: 93%

Respiratory infection transmission risk and indoor air quality at outpatient departments and emergency treatment units of Sri Lankan teaching hospitals

Ehelepola,

Thilakarathna

2024

PLOS Glob Public Health

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“…The study's PM 1 is higher than the levels recorded for Indonesia (28.25 mg/m 3 ) and Cyprus (10 mg/m 3 ) by Syafei et al (2020) and Konstantinou et al (2022), respectively. The PM 2.5 levels reported in this study are significantly lower than those discovered in Bangladesh (159.0 mg/m 3 ), Saudi Arabia (1100.00 mg/m 3 ), China (222.0 mg/m 3 ) and India (149.4 mg/m 3 ) Zaman et al (2021), Niu, Guinot, Cao, Xu, and Sun (2015) and Taushiba et al (2023), respectively, but significantly higher than 69.28 mg/m 3 and 11.5 mg/m 3 by Abulude et al (2021) and Ezeonyejiaku, Okoye, Ezeonyejiaku, and Obiakor (2022), respectively. The PM 10 results from our investigation were lower than those of Salama and Berekaa (2016), Niu et al (2015), Filonchyk and Yan (2018) and Shafi and Khelif (2021) but higher than the one (54.9 mg/m 3 ) obtained by Oweisana, Gobo, Daka, and Ideriah (2021).…”

Section: Resultscontrasting

confidence: 68%

Study on indoor pollutants emission in Akure, Ondo State, Nigeria

Abulude,

Suriano,

Oluwagbayide

et al. 2023

AGJSR

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PurposeThis study aimed to characterize the concentrations of indoor pollutants (such as carbon dioxide (CO2), ozone (O3), nitrogen dioxide (NO2) and sulfur dioxide (SO2), as well as particulate matter (PM) (PM1, PM2.5 and PM10) in Akure, Nigeria, as well as the relationship between the parameters’ concentrations.Design/methodology/approachThe evaluation, which lasted four months, used a low-cost air sensor that was positioned two meters above the ground. All sensor procedures were correctly carried out.FindingsCO2 (430.34 ppm), NO2 (93.31 ppb), O3 (19.94 ppb), SO2 (40.87 ppb), PM1 (29.31 µg/m3), PM2.5 (43.56 µg/m3), PM10 (50.70 µg/m3), temperature (32.4°C) and relative humidity (50.53%) were the average values obtained. The Pearson correlation depicted the relationships between the pollutants and weather factors. With the exception of April, which had significant SO2 (18%) and low PM10 (49%) contributions, NO2 and PM10 were the most common pollutants in all of the months. The mean air quality index (AQI) for NO2 indicated that the AQI was “moderate” (51–100). In contrast to SO2, whose AQI ranged from “moderate” to “very unhealthy,” O3's AQI ranged from “good” (50) to “unhealthy” (151–200). Since PM1, PM2.5 and PM10 made up the majority of PC1’s contribution, both PM2.5 and PM10 were deemed “hazardous.”Practical implicationsThe practical implication of indoor air pollution is long-term health effects, including heart disease, lung cancer and respiratory diseases such as emphysema. Indoor air pollution can also cause long-term damage to people’s nerves, brain, kidneys, liver and other organs.Originality/valueLack of literature in terms of indoor air quality (IAQ) in Akure, Ondo State. With this work, the information obtained will assist all stakeholders in policy formulation and implementation. Again, the low-cost sensor used is new to this part of the world.

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Distribution assessment and source apportionment of particulate bound-PAHs in indoor air of south Asian precinct using IDW and PMF receptor model: A comprehensive study

Dwivedi,

Mahanta,

Mayer

et al. 2024

Atmospheric Environment: X

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Assessment of indoor air quality and their inter-association in hospitals of northern India—a cross-sectional study

Cited by 12 publications

References 65 publications

Respiratory infection transmission risk and indoor air quality at outpatient departments and emergency treatment units of Sri Lankan teaching hospitals

Respiratory infection transmission risk and indoor air quality at outpatient departments and emergency treatment units of Sri Lankan teaching hospitals

Study on indoor pollutants emission in Akure, Ondo State, Nigeria

Distribution assessment and source apportionment of particulate bound-PAHs in indoor air of south Asian precinct using IDW and PMF receptor model: A comprehensive study

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