| 柴油发动机车辆排放废气对城市大气质量影响的研究 |
| 摘要点击 1260 全文点击 1160 修订日期：1993-10-15 |
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| 中文关键词 柴油发动机车辆 多环芳烃 大气质量 环戊二烯并(c d)芘 |
| 英文关键词 diesel vehicles poiycyclic aromatic hydrocarbons air quality cyclopenta (c d) pyrene |
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| 中文摘要 |
| 报告了柴油发动机车辆在不同工况下排放废气中多环芳烃(PAHs)变化的规律及其对城市大气质量的影响。试验表明,不同类型的柴油发动机的排污量不同,即使是同一台柴油发动机在不同工况下,排污量也有较大差异,一般以负荷百分数在2%-5%时排污量最小。在该废气和北京市区大气中分别检出了致突变性比苯并(a)芘更大的环戊二烯并(c,d)芘。 |
| 英文摘要 |
| The changes in the concentration of polycyclic aromatic hydrocarbons (PAHs) in exhaust gas emitted from diesel vehicles under different working conditions and their effects on urban air quality were reported in this paper. The PAHs emissions were found to be related to the types of engine and their conditions, with the lowest emission generated upon an operation load of between about 2%-5%.Cyclopenta (c,d)pyrene was measured respectively in the exhaust gases and urban air,and was found to have a much higher mutagenicity than benzo(a)pyrene. |
