Application of femtosecond laser mass spectrometry to the analysis of volatile organic compounds
作者： Min Liu , Chengyin Wu , Zhifeng Wu , Hong Yang , Qihuang Gong
DOI: 10.1016/J.JASMS.2010.02.020
关键词: Mass spectrum 、 Chemistry 、 Femtosecond 、 Analytical chemistry 、 Photoionization 、 Mass spectrometry 、 Ionization 、 Ion 、 Ultrashort pulse 、 Laser
摘要: Femtosecond (fs) lasers have high intensity and ultrashort pulse duration. Tunneling ionization occurs for molecules subject to such intense laser fields. We studied the mass spectra of a variety irradiated by fs pulses. These include some typical volatile organic compounds contained in human breath atmosphere. The results demonstrate that all these can be ionized Dominant parent ion characteristic ionic fragments are observed each molecule. degree fragmentation controlled adjusting intensity. Moreover, saturation occur molecule increasing features indicate spectrometry sensitive tool identify quantify breath.
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