Effect of acid rain on environment and Persepolis archaeological zone

Subject Areas : Water and Environment

Mohammad Mehdi Ghanbari ¹ , Sayed Mahdi Bourghaee ² , Amir Hessam Hassani ³ , Sima Farjadfard ⁴

1 - Assistant Professor, Department of Chemistry, Faculty of Sciences, Sarvestan Branch, Islamic Azad University, Fars, Iran
2 - Professor, Faculty of Chemical Engineering and Petroleum, Sharif University of Technology, Tehran, Iran
3 - Assistant Professor, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran
4 - PH.D student of Environmental Engineering, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran

Received: 2010-04-14 Accepted : 2010-06-21 Published : 2010-09-23

Keywords: Persepolis, acid rains, Environment, pollutants emission, Acidity,

Abstract :

According to erosion stones in Perspolis archeological zone, it was decided to study parametersaffecting this process. In this research, geographical map of the site and direction of seasonal andyearly winds were studied and samples of rain water were analyzed. Rain water samples fromdifferent locations of Marvdasht city in spring, autumn and winter was collected and tested for acidity.pH of the rain samples of Perspolis region varied between 5.97 and 6.58 during three seasons and allof them were acid rains, which could be one of the most important factors in erosion process of thisenvironment. It is predicted that pollutants emitted from Shiraz Petrochemical Company, Marvdashtcity industries and also exhaust from vehicles have moved toward the west and north-west zone bymentioned winds. So, these pollutants are conflicted to Rahmat mountains (Perspolis archeologicalzone is placed in hillside of Rahmat mountains) and soluted into rainfalls and finally washed with therain water (named acid rain) onto stones and environment of this zone.

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