光质谱法探测不同状态下机动车尾气中芳香烃物质相对含量的变化

摘要

In this article, we have studied air pollutants in the exhaust gas of vehicle using laser mass spectromety, which is characteristic of high sensitivity, high selectivity, multi-component and on-line real-time analysis. Using this method, we find that the concentration of aromatic substances in the exhaust gas of vehicle of low gear status is much more than that of speed-up status.%利用高灵敏度、高选择性、多组分和快速实时分析探测的方法——激光质谱方法研究机动车尾气。发现在266 nm激光作用下，低速状态下机动车尾气中的芳香族含量远高于加速状态下的含量。