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Background: Air pollution in large cities is one of the main difficulties that have harmful effects on humans and cause various diseases including cancers. So, present study with aim of determination the relation between air pollution and Incidence rate of two most common cancer in Tehran were performed. Methods: at first, hourly data of pollutants including of CO, NO2, O3, SO2, PM10 were taken from the environmental protection agency Tehran and Air Quality Control Company and Archived documents of Disease data were acquired from Iran University of Medical Sciences .Then, descriptive studies were performed on criteria air pollutants and dependent variable . Finally, inferential tests such as Pearson correlation coefficient and linear regression were used to determine the relationship between air pollution and the incidence rate of Lung and Hematologic Neoplasms. Results: Results showed there was significant relationship between PM10/O3 and among men and women. The correlation of coefficients between PM10 and O3 with Number of cases of disease in men and women were 0.904, 0.882, 0.924, 0.931, 0.856, 0.949, 0.976, 0.860 respectively. Conclusion: According to the results, there were positive relationship between PM10/O3 and incidence rate of Lung and Hematologic Neoplasms among men and women. Due to the high level of ozone and airborne particles and their health consequences, Continuous and further prevention and control measures should be developed to alleviate the situation of the two air pollutants.

Background: Phenol is an organic pollutant found in industrial effluents that is very toxic to humans and the environment. This study used pomegranate peel ash as a natural absorbent to remove phenol from aqueous solutions. Methods: In this study, pomegranate peel ash in different doses was used as a new adsorbent for the removal of phenol. The effects of contact time, pH, adsorbent dose and initial phenol concentration were recorded. Then, the adsorption data was described with Langmuir and Freundlich adsorption isotherms; Excel software was used for data analysis. Results: The highest percentage of phenol adsorption was observed at pH = 7. The optimum amount of adsorbent was 0.6 g/l, and after 120 minutes, the process reached an equilibrium state. The adsorption of phenol decreased following an increase in the pH of the solution. It was also observed that contact time significantly affected the rate of phenol adsorption. The experimental data fit much better in the Freundlich (R2 = 0.9056) model than in the Langmuir (R2 = 0.8674) model. Conclusion: Pomegranate peel ash has the potential to be utilized for the cost-effective removal of phenol from aqueous solutions.