Gholamreza Darvishi - Civil and Environmental Engineering Department, Khajeh Nasir Toosi University of Technology, Tehran, Iran
Majid Ehteshami - Civil and Environmental Engineering Department, Khajeh Nasir Toosi University of Technology, Tehran, Iran
Farshad Golbabaei Kootenaei - Environmental Engineering Department, Graduate School of Environment, University of Tehran, Tehran, Iran
Mahdi Asadi Ghalhari - Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran

Background & Aims of the Study: Among different kinds of air pollutants, Particle mattersdue to their proved destructive impacts on human health and their various sources liketransportation attract wide attention. The objective of this work is determining the real value ofparticle matters in one of the important and busy roads in Iran (Sari- Qaemshahr road).Materials & Methods: In this study, measurement and field analysis of particle matter (PM)pollution of Sari-Qaemshahr road (Iran), with high load of traffic, has been done during a 6 yearsperiod (2010-2015) and the results have been investigated by means of AQI and Iranian clean airstandard indexes. Furthermore, the effect of pollutants on human health is discussed.Results: The results showed that particle matter pollution in study stations has an increasingupward trend. Comparison of measured particles with clean air standard expresses that theamount of particles is under the clean air standard limitation and it could not considered as adanger. However, comparison of PM with AQI index showed that the amount of the PM, except2010, is in the range of very unhealthy and it shows a very poor condition. Considering its effectson human health, the increasing trend of these particles could become a concern for the society.Conclusions: This research reveals that the Iranian clean air standard needs a meticulous reviewin order to administer the emission of PM, using the results which are obtained from this study.

Particle Matter (PM)EnvironmentTransportation RoadAQIIran