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Distribution of Polycyclic Aromatic Hydrocarbons in Gas phase in urban atmosphere | ||
| International Journal of Environmental Research | ||
| مقاله 13، دوره 2، شماره 1، فروردین 2008، صفحه 97-102 اصل مقاله (156.64 K) | ||
| شناسه دیجیتال (DOI): 10.22059/ijer.2010.181 | ||
| چکیده | ||
| Polycyclic Aromatic Hydrocarbons (PAHs) are toxic pollutants released by various urban combustion sources. Tehran is the largest city in Iran with a population of about 8 million and it is faced with serious air quality problems. The gas phase samples collected from 21 sites in Tehran area throughout year 2005. The samples‘ PAHs were collected using a SKC trapping consisting of glass cartridge packed with XAD-2 resin supported by two polyurethane foam plugs. Sixteen PAHs were analyzed by HPLC with two detectors (fluorescence; UV-Vis) according to U. S. Environmental Protection Agency methods.The average concentrations of PAHs ranged from 16068.98 μg/m3 for Bahman site to 1000.24 μg/m3 for Nour site. The species that presented higher concentration were Acenaphtylene (2674.74 μg/m3), Naphthalene (2467.71 μg/m3) and Acenaphtene (1245.22 μg/m3). The PAHs with two and three rings were responsible by 87 % of the total concentration among 16 PAHs. A major source of PAHs, in Tehran area is related to traffic and the number of gasoline and diesel vehicles. | ||
| کلیدواژه‌ها | ||
| Toxic compounds؛ Polycyclic Aromatic Hydrocarbons (PAHs)؛ Vapour phase؛ Vehicle emissions | ||
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آمار تعداد مشاهده مقاله: 3,201 تعداد دریافت فایل اصل مقاله: 2,144 |
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