Ion transmission and ion/molecule separation using an electrostatic ion guide in chemistry ionization mass spectrometry

Citation
Ry. Zhang et al., Ion transmission and ion/molecule separation using an electrostatic ion guide in chemistry ionization mass spectrometry, INT J MASS, 194(1), 2000, pp. 41-48
Citations number
23
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
ISSN journal
13873806 → ACNP
Volume
194
Issue
1
Year of publication
2000
Pages
41 - 48
Database
ISI
SICI code
1387-3806(20000101)194:1<41:ITAISU>2.0.ZU;2-Y
Abstract
The performance of an electrostatic ion guide for use in chemical ionizatio n mass spectrometry is evaluated. The study focuses on the use of the ion g uide to extract charged particles in a rapidly expanding beam consisting of ions and neutral molecules. A theoretical analysis of this system is prese nted, using three-dimensional calculations of the trajectories of ions. Lab oratory measurements verifying the theoretical calculations are also report ed. The results illustrate the two principal advantages for this system: ef ficient ion transmission and ion-neutral molecule separation. A comparison between the ion guide and the commonly used electrostatic ion lenses shows that the ion guide is significantly more efficient in capturing and transpo rting charged particles from a diverging ion source. (C) 2000 Elsevier Scie nce B.V.