List of articles (by subject) air pollution
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Open Access Article
1 - Environmental review of the automotive industry and the ways to reduce its pollution
seyed sajad bidva Marzieh HasanzadehIn recent decades, with the rapid growth of urbanization and population growth in cities, the use of public transport and personal vehicles has been on the rise, which has many consequences such as greater dependence on the car, long travels, increased transportation co MoreIn recent decades, with the rapid growth of urbanization and population growth in cities, the use of public transport and personal vehicles has been on the rise, which has many consequences such as greater dependence on the car, long travels, increased transportation costs and most importantly, environmental hazards and air pollution. The Irregular use of cars leads to the loss of irreversible energy, the effects of greenhouse gas, and the dissatisfaction of townspeople of the high levels of noise and air pollution, resulting in a reduction in economic efficiency. In this regard, governments have set various rules and standards for reducing car pollution and the car makers are required to comply with them. These requirements have prompted carmakers to find ways to reduce the environmental pollution of their products and to create new technologies in this industry. Therefore, attention to environmental studies in the automotive industry is one of the most important factors. In this research, we investigate the types of pollution caused by automobile industry and practical ways to reduce these contaminations. Manuscript profile -
Open Access Article
2 - assessment of tropospheric NO2 changes in Kermanshah using OMI sensor and its relationship with meteorological parameters
Rasoul BagherabadiToday, the increase and development of urbanization, industrial activities and the consumption of fossil fuels have increased air pollution in large cities. One of the indicators of air pollution is nitrogen dioxide. In this paper, the trend of changes in the concentrat MoreToday, the increase and development of urbanization, industrial activities and the consumption of fossil fuels have increased air pollution in large cities. One of the indicators of air pollution is nitrogen dioxide. In this paper, the trend of changes in the concentration of nitrogen dioxide related to the troposphere in the city of Kermanshah in the period 2006 to 2018 is presented. In this study, the monthly concentrations of nitrogen dioxide obtained show that the highest amount of nitrogen dioxide occurs in winter and the lowest amount occurs in summer. As the highest amount of nitrogen dioxide occurs in January and the lowest amount occurs in June, meteorological conditions can increase the severity and extent of tropospheric nitrogen dioxide pollution. The results of tropospheric nitrogen dioxide concentration with meteorological parameters showed that the correlation coefficient of Pearson nitrogen dioxide with wind and surface temperature are inversely related, respectively. Reductions an OMI sensor was used to monitor nitrogen dioxide. In this study, nitrogen dioxide using an OMI sensor in February and July 2016 showed that the amount of nitrogen dioxide was higher in February and lower in July. Manuscript profile -
Open Access Article
3 - Evaluation of health risk due to inhalation of volatile organic components in the ambient air of Khorramabad.
Arman SaeiIn this paper, carcinogenic and non-carcinogenic risk assessment is investigated by inhalation volatile organic components in the ambient air of Khorramabad. These compounds include benzene, ethylbenzene , toluene , xylenes (BTEX) and normal Hexane. To assess the risk MoreIn this paper, carcinogenic and non-carcinogenic risk assessment is investigated by inhalation volatile organic components in the ambient air of Khorramabad. These compounds include benzene, ethylbenzene , toluene , xylenes (BTEX) and normal Hexane. To assess the risk ,first two different scenarios were defined based on the exposure of people to the organic compounds in question and the duration of respiration. Then, the average amount of intake CDI or respiration of mentioned pollutants during life was extracted based on dual scenarios in 11 areas of Khorramabad city. The carcinogenic risk for benzene and ethylbenzene compounds as well as the non- carcinogenic risk for all pollutants discussed in both scenarios were calculated and discussed. It should be noted that due to the high amount of calculations and ease and accuracy in results, programming was done in excel software environment and the initial and final results were calculated directly from this method and the necessary diagrams were drawn. According to the calculation , the annual risk and the total risk of carcinogenicity of inhaling the pollutants in question in the air of Khorramabad for the first scenario are equal to 1.51 E -06 and 5.65 E-01 people per year , respectively. Also, the annual risk and the total risk for the second scenario are 6.19E-07 and 2.31 E-01 per year ,respectively. In addition , the non-carcinogenic risk index for inhalation of the these compounds in the ambient air of Khorramabad is 3.898 and 0.594 for the first and second scenarios respectively. Manuscript profile