Marzieh Makaremi - Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Nabiollah Mansouri - Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Alireza Vafaeinajad - Department of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran.
Mohammad Hasan Behzadi - Department of Foundation Science, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Seyed Alireza Mirzahossieni - Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran.

Background: Gypsum industry is one of industries which is known as an environment pollutant. In this study distribution and prediction of emitted PM۱۰ from Gypsum factory is studied by modeling. The main goal of this study is to create a regression equation to demonstrate the Zarch factory PM۱۰ dispersion by the AERMOD model. Methods: In this study distribution and concentration of emitted particulate matter (PM۱۰) is estimated by AERMOD model. The regression equation of emission is resulted by AERMOD estimation and excel software, finally the results of AERMOD model and regression equation was compared to each other. Results: In this study the regression equation is c = ۱۴.۶ x (-۱.۰۴۵) and by this regression equation the particulate matter’s concentration could be estimated around the factory. Comparison of regression equation and AERMOD model represented that ۶۹% of total results are similar in models. Conclusion: The results of this study represented that by AERMOD outputs, a regression equation could be created which is able to estimate particulate matter’s concentration around the emission sources according to sources properties, meteorological parameters, site topography and etc.

Pollutant sources, Distribution, Estimation, Power function