Citation: Zeper ABLIZ, Li Jun LI, Teruo KAN, Toyotoshi UEDA. Discrimination of Structural Isomers of Aromatic Compounds with EI Mass Spectra and Their Ionization Efficiency Curves of Dehydrogenated Fragment Ions[J]. Chinese Chemical Letters, ;1998, 9(10): 961-964. shu

Discrimination of Structural Isomers of Aromatic Compounds with EI Mass Spectra and Their Ionization Efficiency Curves of Dehydrogenated Fragment Ions

1.
Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050;
2.
Tokyo Metropolitan Research Laboratory of Public Health, Shinjuku-ku, Tokyo 160, Japan;
3.
Department of Chemistry, Meisei University, Hino-shi, Tokyo 191, Japan

Received Date: 12 March 1998

The mechanism of ionization and fragmentation for terphenyl (diphenylbenzene) with three structural ring isomers (ortho-, meta-and para-), and stilbene (1,2-diphenylethylene) with two geometrical isomers (trans-and cis-) by EI mass spectrometry and ionization efficiency curves are investigation.
- terphenyl and stilbene,
- EI mass spectrometry,
- Ionization efficiency curve,
- overcrowding effect,
- Fragmentation mechanism
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