| Title: | "Source attributions of hazardous aromatic hydrocarbons in urban, suburban and rural areas in the Pearl River Delta (PRD) region" |
| Author(s): | Zhang Y; Wang X; Barletta B; Simpson IJ; Blake DR; Fu X; Zhang Z; He Q; Liu T; Zhao X; Ding X; |
| Address: | "Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China" |
| DOI: | 10.1016/j.jhazmat.2013.02.023 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Aromatic hydrocarbons (AHs) are both hazardous air pollutants and important precursors to ozone and secondary organic aerosols. Here we investigated 14 C6-C9 AHs at one urban, one suburban and two rural sites in the Pearl River Delta region during November-December 2009. The ratios of individual aromatics to acetylene were compared among these contrasting sites to indicate their difference in source contributions from solvent use and vehicle emissions. Ratios of toluene to benzene (T/B) in urban (1.8) and suburban (1.6) were near that of vehicle emissions. Higher T/B of 2.5 at the rural site downwind the industry zones reflected substantial contribution of solvent use while T/B of 0.8 at the upwind rural site reflected the impact of biomass burning. Source apportionment by positive matrix factorization (PMF) revealed that solvent use, vehicle exhaust and biomass burning altogether accounted for 89-94% of observed AHs. Vehicle exhaust was the major source for benzene with a share of 43-70% and biomass burning in particular contributed 30% to benzene in the upwind rural site; toluene, C8-aromatics and C9-aromatics, however, were mainly from solvent use, with contribution percentages of 47-59%, 52-59% and 41-64%, respectively" |
| Keywords: | Air Pollutants/*analysis/chemistry Air Pollution Benzene/analysis Biomass China Cities Environmental Monitoring/methods Geography Hydrocarbons/*chemistry Ozone Particulate Matter Polycyclic Aromatic Hydrocarbons/*analysis/isolation & purification Quality; |
| Notes: | "MedlineZhang, Yanli Wang, Xinming Barletta, Barbara Simpson, Isobel J Blake, Donald R Fu, Xiaoxin Zhang, Zhou He, Quanfu Liu, Tengyu Zhao, Xiuying Ding, Xiang eng Research Support, Non-U.S. Gov't Netherlands 2013/03/19 J Hazard Mater. 2013 Apr 15; 250-251:403-11. doi: 10.1016/j.jhazmat.2013.02.023. Epub 2013 Feb 20" |
