✦ LIBER ✦

Production Assisted Library Search of the Electron Ionization Mass Spectrum of a Mixture

✍ Scribed by Jian-Ting Chen; Chiun-Gung Juo; Chia-Fu Yeh; Guor-Rong Her

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 327 KB
Volume: 10
Category: Article
ISSN: 0951-4198
DOI: 10.1002/(sici)1097-0231(19960731)10:10<1179::aid-rcm638>3.0.co;2-3

No coin nor oath required. For personal study only.

✦ Synopsis

It has been found that fragment-ion spectra derived from molecular ions do not, in general, achieve good scores when matched against standard library mass spectra. Although the same m / . values may be observed, the relative intensities are frequently too different from those in the E X mass spectral libraries. A strategy has been developed for compound identification in simple mixtures, in which fragment-ion spectra of molecular ions are adjusted to match the relative intensities of the same m/z values in the El mass spectrum of the mixture. It is shown that thi5 simple adjustment permits more reliable identification of compounds in a mixture by library matching than does use of the unadjusted fragment-ion spectra.

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