Demonstration of proton-transfer reaction time-of-flight mass spectrometry for real-time analysis of trace volatile organic compounds
Demonstration of proton-transfer reaction time-of-flight mass spectrometry for real-time analysis of trace volatile organic compounds
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DOI：
10.1021/ac0498260
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发表时间：
2004-07-01
影响因子：
7.4
通讯作者：
Monks, PS
中科院分区：
文献类型：
--
作者：
Blake, RS;Whyte, C;Monks, PS
介绍了一种基于飞行时间质谱的质子转移反应质谱仪。该仪器将放射性离子源和漂移管与反射飞行时间质谱仪耦合。气相中浓度为十亿分之一体积水平的挥发性有机化合物可以在几秒钟内检测到，至关重要的是，TOF-MS中的多通道数据采集意味着这种检测灵敏度可以同时在所有质量通道中使用。典型的质量分辨率（m/Δ m）超过1000。使用城市空气测量和线性响应/校准测试证明了仪器的性能。
A proton-transfer reaction mass spectrometer based on time-of-flight mass spectrometry is described. This instrument couples a radioactive ion source and drift tube with a reflectron time-of-flight mass spectrometer. Volatile organic compounds in the gas phase with concentrations at the parts per billion by volume level can be detected in a matter of seconds, and crucially, the multichannel data acquisition in TOF-MS means that this detection sensitivity is available in all mass channels simultaneously. The typical mass resolution (m/Deltam) is in excess of 1000. The performance of the instrument is demonstrated using urban air measurements and a linear response/calibration test.