Contribution of VOCs to Ozone Formation in Bursa Atmosphere

Weekly passive sampling campaigns were carried out over two sample periods to measure SO2, NO2,O3 in Bursa, one of the most heavily industrialized cities in Turkey. The measurements were conducted at 40 points in October 2005 and 49 points in April 2006. Ozone formation potential related to VOCs measured in same sampling points is calculated by Maximum Incremental Reeactivity (MIR) technique. M&p xylene is the most dominant contributor to ozone formation among all sectors. Toluene is the second largest contributor. On average, these two compounds account for 70% and 75% of the total for October 2005 and April 2006 sampling campaigns, respectively. According to factor analysis results conducted in the previous study, these two compounds came mainly from the use of solvents and gasoline evaporation