precipitate into improve the air quality standards for certain types of volatile organic chemicals from the Benzene and measuring 1 3, Butadiene is found often in effect measuring in excess of standard frequently both. Measuring results that exceeded the standard value, it occurs not only in industrial zones only. But they are also found in areas where there is traffic density, for example, in the area near the traffic routes. That may determine whether the concentrations from transportation or check chotrachon it will have normal concentrations in excess of matthan. Therefore, given the objective, the concentration of Benzene and Butadiene, 1 3 in the lower atmosphere, matthan by trying to reduce the emissions of both industry-specific. Will not be able to achieve that objective.he emissions of both industry-specific. Will not be able to achieve that objective.