Comparison of IAQ Standards in Healthcare Facilities with the aim of providing acceptable Standards in Iran
2023
Farhadi, Forough | Khakzand, Mehdi | Khanmohammadi, MohammadAli | Barzegar, Zahra
Indoor air quality (IAQ) is a significant concern that affects comfort and health. It is well understood that hospitals are thermal environments in which comfort must be calibrated. This comparative study examined existing international standards of IAQ in Iranian health care facilities. A systematic review of studies on IAQ standards was conducted to test the hypothesis regarding which parameters, and at what level, can have an impact on hospital IAQ: EPA, ASHRAE, LEED, BREEAM, NIOSH, OSHA, WHO, ACGIH, Canadian, and OEL. The inclusion criteria were met by 34 of the 1886 studies that were screened from 2010-2021. The findings of the selected studies were classified into four categories for analysis: monitoring of IAQ according to standards (n=34), IAQ in healthcare facilities (n=1), impact of air pollution on human health (n=9), and interventions to improve IAQ (n=1). Based on these IAQ standards, the acceptable limit for CO2 6300 *10³ µg/m³, for CO 9000 µg/m³, for Formaldehyde 19 µg/m³, for NO2 37 µg/m³, for O3 98 µg/m³, for PM2.5 0.1 µg/m³, for PM10 10 µg/m, and for SO2 31 µg/m³ was suggested. The majority of studies conducted monitoring of pollutants in indoor environments used for homes and schools, with the majority of them relying on WHO IAQ standards. CO, PM, and NO2 concentrations have been the most studied and have the longest track record of research. The acceptable limit for IAQ parameters was proposed.
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