|
|
|
| VOCs emission characteristics and emission factors of light-duty gasoline vehicles with bench test |
|
|
|
|
Abstract In order to study the VOCs emission characteristics and emission factors of the exhaust gas of light-duty gasoline vehicles, different types of light-duty gasoline vehicles in used were tested with a chassis dynamometer according to Limits and Measurement Methods for Emission from Light-duty Vehicles (Ⅲ,Ⅳ). VOCs species in exhaust gas samples were analyzed by gas-chromatography and mass spectrometry coupled pre-concentration. 68 VOCs in exhaust gas samples had been quantitative detected, aromatics, alkanes and alkenes (with acetylene) account for 38.7%, 29.8% and 27.1% respectively. In addition, the source profile for different types of vehicles agreed well with each other. The total VOCs emission factor for light-duty gasoline vehicle is 0.01-0.41g/km. Ethane, toluene and benzene ranked the top 3 with the highest emission factors.
|
|
Received: 26 May 2011
|
|
|
|
|
|
|
