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The air quality of Tehran underground railway transit system

Jafari, M. J ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. Publisher: 2011
  3. Abstract:
  4. This study examines the air quality on line 1 and 2 of Tehran underground metro. The total suspended particulate (TSP), PM10, PM2.5, PM1, CO2, NO, NO2, SO2, relative humidity and air temperature were measured. An integrated air quality index was also calculated for each location. The results revealed that, PMlO, PM2.5, and SO2 concentrations are higher than their environmental standard levels. The in station CO2 levels are higher while its' in train levels are lower than environmental permissible level. The air quality index showed that the in-train air quality is more acceptable than the instation air quality
  5. Keywords:
  6. Air temperature ; Commuter exposure ; Environmental standard levels ; Particulate Matter ; Quality indices ; Total suspended particulates ; Transit systems ; Underground metro ; Underground railway ; Aerodynamics ; Carbon dioxide ; Nitrogen compounds ; Railroad tunnels ; Air quality
  7. Source: BHR Group - 14th International Symposium on Aerodynamics and Ventilation of Tunnels, 11 May 2011 through 13 May 2011 ; May , 2011 , Pages 551-561 ; 9781855981232 (ISBN)