CHEMICAL POLLUTION PRODUCED BY THE HEAVY VEHICLES IN URBAN AREAS

摘要

In this paper it is presented a study of the experimental researches about the influence of the increasing of the heavy vehicles over the air quality in urban areas. There were studied several intersections of the Brasov City, for a hour interval according with the current Environmental legislation from the European Union. This study includes road traffic measurements effectuated in 2009 and chemical emissions measurements. The measurements of the pollutant emissions specific to the zone studied were realized with a portable gas detector MultiRAE IR. It was analyzed the concentration variation of three chemical pollutants (CO [ppm], VOC [ppm], SO_2 [ppm]) and CO_2 concentration, specific to the areas near the road' infrastructure for one time interval when the measurements were made. Also, there ware made meteorological conditions measurements, using a portable anemometer, AIRFLOW TA460. The selected time interval was 15.00-16.00, when the traffic flow density is high. The study was realized taking into account the pollutants mentioned in the Environmental legislation from the European Union and the conditions of the World Health Organization (W.H.O.).