| Title: | Revealing source signatures in ambient BTEX concentrations |
| Author(s): | Zalel A; Yuval; Broday DM; |
| Address: | "Environmental, Water and Agricultural Engineering Department, Faculty of Civil and Environmental Engineering, Israel Institute of Technology, Technion, Haifa 32000, Israel" |
| DOI: | 10.1016/j.envpol.2008.01.016 |
| ISSN/ISBN: | 1873-6424 (Electronic) 0269-7491 (Linking) |
| Abstract: | "Management of ambient concentrations of Volatile Organic Compounds (VOCs) is essential for maintaining low ozone levels in urban areas where its formation is under a VOC-limited regime. The significant decrease in traffic-induced VOC emissions in many developed countries resulted in relatively comparable shares of traffic and non-traffic VOC emissions in urban airsheds. A key step for urban air quality management is allocating ambient VOC concentrations to their pertinent sources. This study presents an approach that can aid in identifying sources that contribute to observed BTEX concentrations in areas characterized by low BTEX concentrations, where traditional source apportionment techniques are not useful. Analysis of seasonal and diurnal variations of ambient BTEX concentrations from two monitoring stations located in distinct areas reveal the possibility to identify source categories. Specifically, the varying oxidation rates of airborne BTEX compounds are used to allocate contributions of traffic emissions and evaporative sources to observed BTEX concentrations" |
| Keywords: | "Air Pollutants/*analysis Benzene/*analysis Benzene Derivatives/*analysis Environmental Monitoring/methods Industrial Waste Israel Nitrogen Dioxide/analysis Oxidants, Photochemical/analysis Particle Size Seasons Time Toluene/*analysis Vehicle Emissions Xyl;" |
| Notes: | "MedlineZalel, Amir Yuval Broday, David M eng Research Support, Non-U.S. Gov't England 2008/02/22 Environ Pollut. 2008 Nov; 156(2):553-62. doi: 10.1016/j.envpol.2008.01.016. Epub 2008 Mar 4" |
