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Journal of Environmental and Public Health
Volume 2013, Article ID 670590, 6 pages
Research Article

A Preliminary Assessment of Dispersion Level of SO2 in Fars Industrial Region, South of Iran, by GIS

1Environmental Health Engineering Department, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran
2Environmental Engineering Department, Estahban Branch, Islamic Azad University, Estahban, Iran
3Environment Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
4Apadana University, Shiraz, Iran

Received 26 May 2013; Revised 8 August 2013; Accepted 12 August 2013

Academic Editor: Pam R. Factor-Litvak

Copyright © 2013 Mansooreh Dehghani et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The city of Zarghan is located 25 km northeast of Shiraz, southern Iran. Zarghan is affected by numerous pollution sources such as oil refinery, an industrial park, and Shiraz-Tehran highway. The numerous contaminating sources around Zarghan can cause serious local air pollution. Sulfur dioxide gas is an important index of air pollution in cities. Therefore, in order to control and manage Zarghan air quality, it is important to monitor sulfur dioxide concentration in the surrounding area. It is also essential to know about the contribution level of other sources of pollution as well as dispersion radius of pollutants in the area. In this study, the concentration of sulfur dioxide was measured by passive sampling at 10 different stations. These values were interpolated in other parts of the city using ArcGIS software. The results of sampling showed that the concentration of the gas was 60 µgm−3 around oil refinery. The level was 19 µgm−3 in region located about 3 km from the oil refinery. It was also demonstrated that the gas concentration was not higher than the standard limit within residential area. On the other hand, the role of the local highway and industrial park was not significant in contaminating air in urban areas.