1. Evaluating size-fractioned indoor particulate matter in an urban hospital in Iran.
- Author
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Heibati, Behzad, Rivas, Ioar, Veysi, Rahmat, Hoek, Gerard, Perez-Martinez, Pedro Jose, and Karimi, Ali
- Subjects
PARTICULATE matter ,MOBILE hospitals ,INDOOR air quality ,URBAN hospitals ,BONE marrow transplantation ,AIR pollutants - Abstract
Hospitals host vulnerable people with potentially enhanced sensitivity to air pollutants. We measured particulate matter (PM) including PM
1 , PM2.5 , and PM10 with a portable device in a hospital, a nearby reference building, and ambient air in Shiraz, Iran. Indoor/outdoor (I/O) ratio values were calculated to infer on the origin of size-fractioned PM. The mean hospital indoor concentrations of PM2.5 and PM10 (4.7 and 38.7 μg/m3 , respectively) but not PM1 were higher than in the reference building and lower than in ambient air. The highest hospital PM10 mean concentrations were found in the radiotherapy ward (77.5 μg/m3 ) and radiology ward (70.4 μg/m3 ) while the lowest were found in the bone marrow transplantation (BMT) ward (18.5 μg/m3 ) and cardiac surgery ward (19.8 μg/m3 ). The highest PM2.5 concentrations were found in the radiology (8.7 μg/m3 ) and orthopaedic wards (7.7 μg/m3 ) while the lowest were found in the BMT ward (2.8 μg/m3 ) and cardiac surgery ward (2.8 μg/m3 ). The I/O ratios and the timing of peak concentrations during the day (7 a.m. to 4 p.m.) indicated the main roles of outdoor air and human activity on the indoor levels. These suggest the need for mechanical ventilation with PM control for a better indoor air quality (IAQ) in the hospital. [ABSTRACT FROM AUTHOR]- Published
- 2021
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