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Vehicle Exhaust Measurement With VUV-SPI-TOFMS
Published May 19, 2010 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Spring Conference
Volatile organic compounds (VOCs) and nitrogen oxides in the vehicle exhaust gas are the causative agents of ozone formation near the earth's surface. For real-time detection of VOCs and nitrogen oxides in the exhaust gas with high sensitivity, we have developed vacuum ultraviolet single photon ionization time-of-flight mass spectrometer (VUV-SPI-TOFMS), and the measurements of the exhaust gas from both gasoline- and diesel-engine vehicles were performed. In the gasoline-engine vehicle exhaust gas, high concentrations of VOCs were measured within first few minutes. In the diesel-engine vehicle, the concentration of benzene was relatively high during idling.