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使用气溶胶飞行时间激光质谱仪(ATOFMS)对机动车排放出的尾气进行在线测量,在排放出的气溶胶单粒子中检测出包括钠、钙、CnHm等在内的有机和无机离子。实验表明可以用钙离子和一些典型的有机质谱峰作为监测机动车尾气的标记,同时说明了此装置实时在线测量机动车尾气成分的可行性,也可以为机动车尾气气溶胶粒子在大气气溶胶中的分配情况进行化学路径跟踪。
The on-line measurement of vehicle emissions was performed using an aerosol time-of-flight laser mass spectrometer (ATOFMS) and organic and inorganic ions including sodium, calcium and CnHm were detected in the discharged aerosol single particles. Experiments show that calcium ions and some typical organic mass spectrometry peaks can be used as a marker to monitor vehicle exhaust gas. Meanwhile, it is demonstrated that this device can measure on-line the exhaust components of vehicles in real time. It can also be used for the measurement of vehicle aerosol particles in atmospheric aerosol In the distribution of chemical path tracking.