Isfahan University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share By
Characteristics of Gaseous and Particulate Air Pollutants at Four Different Urban Hotspots in Tehran, Iran Publisher



Jafari AJ1, 2 ; Delikhoon M3 ; Rastani MJ4 ; Baghani AN5 ; Sorooshian A6, 7 ; Rohanirasaf M8 ; Kermani M1, 2 ; Kalantary RR1, 2 ; Golbaz S5 ; Golkhorshidi F1, 2
Authors

Source: Sustainable Cities and Society Published:2021


Abstract

This study reports a characterization of outdoor gaseous and particulate pollutants and their associated health effects in four different urban hotspots in Tehran, Iran during winter and summer. Buses, taxis, and cars are prominent sources of toxic pollutants in Tehran. There is a significant level of exposure to emissions from diesel buses in bus terminals, especially with boarding, disembarking, and waiting. Mean concentrations (μg/m3) in summer and winter, respectively, ranged from 10 to 20.67 and 17–21 for PM1, 52.50–79.19 and 58.33–85.33 for PM2.5, 64.50–102 and 78.83–125.83 for PM7, 130.17–204.67 and 157–231.67 for PM10, 261–409.50 and 305.83–458.83 for TSP, and 372.50–418.33 vs. 351.27–373.47 for CO2 (ppm). Particulate concentrations were higher in winter, especially the first three days of the week, assisted in part by the shallower mixing layer height as compared to summer. Mean hazard quotient (HQ) values for both PM2.5 and PM10 in both seasons for bus terminals in three scenarios ranged between 0.81 and 4.96, which exceeded reference levels (1 < HQ). The results of this study have implications for public health, especially in dense traffic areas. © 2021 Elsevier Ltd
Other Related Docs
16. Ambient Variations of Benzene and Toluene in Yazd, Iran, Using Geographic Information System, Journal of Mazandaran University of Medical Sciences (2016)