Evaluation of air pollutant concentrations and environmental parameters under normal condition and during novel Coronavirus pandemic, a case study in a hospital (2019-2020)

Authors

  • Mohammadi, Masoumeh Department of Environmental Science, Faculty of Science, University of Zanjan, Zanjan, Iran
  • Tavakoli, Arezoo Department of Nursing, Faculty of Nursing, Islamic Azad University of Eghlid, Fars, Iran
  • Tavakoli, Azadeh Department of Environmental Science, Faculty of Science, University of Zanjan, Zanjan, Iran
Abstract:

Background and Objective: Indoor air pollution in hospitals could be a serious health threat to the patients, medical staff, and visitors. In previous studies, the importance of paying attention to air quality during the Coronavirus pandemic has been proven. In this study, the effect of visiters' presence under normal conditions and the imposition of hospital restrictions at the time of pandemic on air quality and environmental parameters in a hospital has been evaluated. Materials and Methods: Air sampling was carried out in Valiasr Hospital of Zanjan in two periods, September 2019 (morning and visiting hours) and during the pandemic in October 2020. All wards inside and the outside of the hospital were examined for air pollutants (PM2.5, PM10, NO2, SO2, CO2) and environmental parameters (temperature, humidity, and sound levels). Results: The results of this study showed that except for the sound levels, other pollutants are at an acceptable level. Particulate matter of different sizes in the air of the hospital has a correlation, often with an external source, and has been imported through construction activitie;. However, nitrogen dioxide concentration is dependent on urban traffic. Visiting hours are associated with an increase in the concentration of particulate matter and the sound levels. The pandemic had a positive effect in some wards, on some parameters and often improved the air quality due to the imposing strict health protocols. Conclusion: This study showed that natural ventilation has a direct effect on the air quality inside of the hospital. It is also suggested that in wards where patients are sensitive or in the need of intensive care, restrictions on commuting and visitation be applied.

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Journal title

volume 14  issue 3

pages  517- 532

publication date 2021-12

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