particle pollution inside and outside of Tohid Hospital in Sanandaj and modeling of dispersion using Surfer software

Background and Aim: People spent most of their time indoors. Therfore, quality of indoor air ,especially in the therapeutic settings is of particular importance. This study aimed to determine the level of pollutants in indoor and outdoor air of Tohid Hospital in Sanandaj. Materials and Methods: In this cross-sectional descriptive study 120 indoor and outdoor air samples were collected by TES-5200 copper counterpart machine made by TES company in Taiwan. Particulate matter samples were collected from 9 wards and also 3 stations in every ward in the hospital. Also air samples were obtained from 3 selected stations outside the hospital. Samples were taken from the selected sites twice. The results were analyzed by Excel and SPSS software. Results: According to the results of this study, the highest and lowest concentrations of particulate matter (PM2.5, PM4, PM7, PM10) belonged to the emergency room and the operating room, respectively. The highest level of PM1 concentration was detected in the ICU ward. There was no significant relationship between temperature and particle concentration and also between moisture and particle concentration in the wards of the hospital. In regard to particulate matter, the emergency department was the most contaminated ward and the operating room had the best condition. Conclusion: The relationship between the concentrations of particles in the outdoor and indoor air indicated the penetration of these particles from outside into the hospital building. Also, outdoor air can affect indoor air quality.