| Development of New Ionization Methods for GC/MS and LC/MS Interfaces |
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* Clean Energy Research Center, University of Yamanashi (Takeda 4-3-11, Kofu 400-8511, Japan) |
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| New ionization methods for GC/MS and LC/MS interface which have been developed in our laboratory will be described. The atmospheric pressure Penning ionization was developed for GC/MS interface. Its sensitivity was found to be as good as that of the electron impact ionization method. The laser spray developed for LC/MS interface, which can be regarded as the electric-field assisted MALDI, gave about one order of magnitude higher ion detection sensitivity than the conventional electrospray. In addition, laser spray can detect ions with different surface activities more non-selectively than electrospray. | ||
| Key words: Laser spray, Electrospray, MALDI, Penning ionization, Denaturation | ||
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