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According to the information available, many buy gasoline in the summer and July, probably due to an increase in air temperature. The lowest consumption of spring and was associated with April, resulting in the amount of monthly air pollution generated on March 20th to April 20 is the lowest. The cause can be found according to the flow of traffic at least during the national holiday of norooz. After the summer is winter, the highest consumption to a significant increase in consumption in the month of March is probably due to the traffic and getting ready for the night of new year's trips. Fuel consumption is also lower in the fall and spring.It is noteworthy that the production of pollution from vehicles in the spring and the fall season is lower compared with the monthly average during the year. In addition, these rates during the summer and winter.Using these statistics the rate of fuel consumption, before 2013, a comparison can be made in these years. So the production of pollutants by resident resources is reduced. In fact, this is a significant reduction in the Department of industry that the reasons for this decrease are as follows: to reduce fuel consumption and emissions with high natural gas consumption to the users. To prevent the issuance of work permits to polluting industries within the city. To improve the filtration system and reduce pollution from industrial chimneys.With regard to the production of identical distances from the emission factors are among the vehicles are gas consumers 6.8 times more than 12 times more HC and NOx and nearly 58.5 times more of PM and SO2. In addition, among the users is much higher production CO diesel, except for NOx. In fact, the major manufacturers motorcycle LDVs and CO. Multiple personal car close to 50% of the production of CO. Fixed resources, fuel emission factors by most companies is less than 1 g/L caused while operating, CO emissions in comparison with gasoline on the L & GR/311.1 272.3 industry in the transport sector. Therefore, the source of the higher gasoline consumption with higher CO production as well as the share of 97.5 percent of the resources in the production of CO is reasonable. Due to the relatively high gas consumption in the military and industry, the share of these resources in the production of CO higher than other sources.By examining the results of female release published by various transport vehicles, the highest rate of SOxbelongs to the trucks, private bus, public bus and minibus. Since all of them with high sulphur gasoline consumption, they generate the highest amount of sulfur dioxide in the midst of moving vehicles. However, although there are several public buses, they use low sulfur diesel. So the production of SOx check them less than private buses. SOx reviews published in the operating SOxemission, a resident of the polluting sources is higher than the fuel oil, gasoline and natural gas in power plants and refineries, even in other applications by resident resources. Therefore, the production of the SOX by higher consumption of resources that fuel oil from other sources. In addition, the lack of high consumption of oil furnace in mobile sources by static resources has caused a larger share of the SOX, compared with cell phone ones.NOx emission factor used in the same km away as usual by several times higher. This is a significant part of pollutants air pollution produced by diesel vehicles to consumers. However, a large number of vehicles there are gasoline consumption and more than half of which is used for personal vehicles NOx produced. Static resources, according to a release factor in comparison with other fuels in any application, OS release pollutants is higher than the fuel oil, gasoline and natural gas in power plants and refineries, even in other applications by resident resources. Hence, power stations, oil refineries and residential units to major sources of nitrogen oxide production.The production of HC for gasoline consumers vehicles higher than diesel vehicles. The highest HC, motorcycle and personal vehicles, taxis and motorcycles manufacturing accounted for nearly 85 percent of the total production of HC. Hydrocarbon emission factor for a lot of different fuels in the transport sector in comparison with the release of the pollutants in the other groups. However, static resources after 10.5 g/L other emission factors, factor is less than 1. The highest emission factors related to gas station and then home in gasoline and natural gas resources, power plants and oil refineries. Emission factors by the process of evaporation of hydrocarbons in fuel vaporization such as resident resources by vehicles in the highest polluting gas stations that the highest share in the production of HC by sources resides.According to the air pollution emission factors table for cars, air particulate matter in diesel vehicles produce floating several times more than gasoline users. The amount of PM generated by the majority of taxi due to the fact that they have low consumption of CNG. However, on the basis of high gasoline consumption, the production of high PM LDVs compared to other vehicles.According to the operating table by a fixed resource, oil, gasoline and kerosene with a rate of 2.5 to 3 g/L has the highest emission factors these pollutants. In addition, the lowest natural gas and LPG factors with close to 0.3 g/L residential units and industrial consumption in gasoline and kerosene, they have a larger share in the production of SPM in comparison with others.
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