✦ LIBER ✦

Increased fragmentation in methane chemical ionization in the ion trap detector

✍ Scribed by R. Cameron Dorey

Publisher: John Wiley and Sons
Year: 1989
Tongue: English
Weight: 244 KB
Volume: 24
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210241025

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✦ Synopsis

OMS Letters

Dear Sir

Increased Fragmentation in Methane Chemical Ionization in the Ion Trap Detector

The Ion Trap Detector (ITD) is being increasingly demonstrated as a versatile design, allowing electron impact (EX) and chemical (CI) ionization, and even the promise of MS/MS capability. Laboratories are beginning to utilize the design as a low-cost alternative to the familiar quadruple mass filter. In many cases, spectra from an ITD are virtually identical to those produced in a quadrupole mass spectrometer, but this cannot always be assumed. This report presents a significant example of CI mass spectra using a ITD which are totally unlike those from a conventional instrument. The example here is the methane CI mass spectrum of tetradecane, although the mass spectra of all n-alkanes which we have examined with the ITD show the same characteristics.

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