Water Research Institute-CSIR, Tamale, Ghana.
Environ Sci Pollut Res Int. 2011 Aug;18(7):1166-73. doi: 10.1007/s11356-011-0465-9. Epub 2011 Feb 22.
Concentrations of polycyclic aromatic hydrocarbons (PAHs) in street dust in the Tamale metropolis, Ghana, have been measured in this study.
The concentrations of the various types of PAHs identified in street dust samples from high vehicular traffic density in the metropolis are as follows: naphthalene, 10,000 μg/kg; acenaphthylene, 13,000 μg/kg; acenaphthene, 76,000 μg/kg; fluorene, 18,900 μg/kg; phenanthrene, 40,000 μg/kg; anthracene, 21,000 μg/kg; fluoranthene, 35,200 μg/kg; pyrene, 119,000 μg/kg; benzo[a]anthracene, 17,700 μg/kg; chrysene, 10,600 μg/kg; benzo[k]fluoranthene, 18,700 μg/kg; benzo[a]pyrene, 10,900 μg/kg and benzo[g, h, i]perylene, 21,000 μg/kg. Calculation of the phenanthrene/anthracene ratio indicated that the PAHs identified in this study were from vehicular fallout as the ratio was less than 10.
It is clear from the results of the study that road users in the Tamale metropolis, especially hawkers, are exposed to the harmful effects of PAHs, and this suggests the need for the establishment of mitigation measures by the regulatory agencies.
本研究测定了加纳塔马利大都市区街道尘埃中多环芳烃（PAHs）的浓度。
在该大都市区车辆密度较高的街道尘埃样本中，鉴定出以下各种类型的 PAHs 的浓度：萘，10,000μg/kg；苊烯，13,000μg/kg；苊，76,000μg/kg；芴，18,900μg/kg；菲，40,000μg/kg；蒽，21,000μg/kg；荧蒽，35,200μg/kg；芘，119,000μg/kg；苯并[a]蒽，17,700μg/kg；屈，10,600μg/kg；苯并[k]荧蒽，18,700μg/kg；苯并[a]芘，10,900μg/kg 和苯并[g, h, i]苝，21,000μg/kg。计算菲/蒽比值表明，本研究中鉴定出的 PAHs 来自车辆沉降，因为比值小于 10。
从研究结果清楚地看出，塔马利大都市区的道路使用者，特别是摊贩，受到 PAHs 的有害影响，这表明监管机构有必要采取缓解措施。
