✦ LIBER ✦

An Introduction to Quadrupole Ion Trap Mass Spectrometry

✍ Scribed by March, Raymond E.

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 914 KB
Volume: 32
Category: Article
ISSN: 1076-5174
DOI: 10.1002/(sici)1096-9888(199704)32:4<351::aid-jms512>3.0.co;2-y

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✦ Synopsis

A concise introduction is presented to the theory and application of quadrupole ion trap mass spectrometry. The presentation of the theoretical treatment is based on a demonstration of the equivalence of the force acting on an ion in a quadrupole Ðeld and the force derived from the Mathieu equation ; this equivalence permits the application of the solutions of MathieuÏs equation to the conÐnement of gaseous ions. Resonant excitation, collision-induced dissociation, mass spectrometry, tandem mass spectrometry and chemical ionization are discussed in the context of analytical applications. Sample calculations of the trapping parameters and the axial secular frequency, q z b z , mass range, mass range extension and the magnitude of the potential well depth are given.

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