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Method for introducing ions into an ion trap and an ion storage apparatus

A technology for ion introduction and ion storage, which is applied in the direction of positive/negative analyte ion analysis/introduction/generation, ion source/gun, electron/ion optical device, etc., and can solve problems such as inapplicability

Inactive Publication Date: 2008-08-06
SHIMADZU RES LAB EURO
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, this technique generally remains impractical for the most common ion trap configurations without significant mechanical modifications to the ion trap

Method used

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  • Method for introducing ions into an ion trap and an ion storage apparatus
  • Method for introducing ions into an ion trap and an ion storage apparatus
  • Method for introducing ions into an ion trap and an ion storage apparatus

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Embodiment Construction

[0039] As shown in Figure 1, an ion trap mass spectrometer (MS) typically includes six components, namely: an analyte ion source 28, a reactant ion source 10 with a controllable power supply 11, an atmospheric pressure / low pressure interface 25 with a controllable voltage Transmission optics 12 of source 9 , ion trap 6 , and detector 8 .

[0040] Electrospray ionization (ESI) is a method commonly used to generate single or multiple charged ions from organic sample solutions. This type of ion source is often used as a link between a liquid chromatograph (LC) and a mass spectrometer (MS). The atmospheric pressure / low pressure interface 25 is used to pull the wet charged particles from the ESI into the vacuum chamber of the MS and dry them by a process called desolvation. This atmospheric pressure / low pressure interface can be in the form of a heated capillary / ion inlet (as shown at 1 in Figure 1), or alternatively can be in the form of multiple tapered apertures with heated gas...

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PUM

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Abstract

The present invention describes a method of introducing ions into an ion trap and an ion storage device. The first ions are introduced into the ion trap through an entrance aperture to the ion trap by means of introducing means. Operating conditions of said introduction means are adjusted to introduce a second ion having a different polarity than the first ion into the ion trap through said same entrance aperture.

Description

technical field [0001] The invention relates to a method of introducing ions into an ion trap and to an ion storage device. Background technique [0002] The use of a quadrupole ion trap (QIT) as a measure for capturing and storing charged particles was first described by W.Paul and H.Steinwedel in 1953 (Zeitschrift furNaturforschung, 8A; 1953 , p448 and US 2,939,952). This technique continued to develop, and the QIT was used as a mass spectrometer for the first time in 1959, as E. Fischer in Zeitschrift f. Physik 156 ( 1959 as described in p1-26). Since then, QITs for ion storage and mass analysis have been steadily developed. This development is reviewed in "Quadrupole Ion Trap Mass Spectrometry" by Raymond E. March and John F. Todd. [0003] Recently, however, more attention has been focused on 2D ion traps, also known as linear ion traps (LIT) and digital ion traps (DIT), as described by L. Ding et al. in "IonMotion in the Rectangular Wave Quadrupole Field and Digi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/04H01J49/10H01J49/42H01J49/06H01J49/16
CPCH01J49/0072H01J49/0095H01J49/062H01J49/4295
Inventor 丁力A·J·史密斯N·E·尼古拉耶维奇
Owner SHIMADZU RES LAB EURO
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