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Ion extraction device and method thereof

An extraction device and ion technology, applied in the field of mass spectrometry, can solve problems such as difficult cleaning and easy clogging of capillaries, and achieve the effects of improving sensitivity and detection limit, improving ion extraction efficiency, and reducing engineering maintenance

Inactive Publication Date: 2013-06-05
FOCUSED PHOTONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this sampling and extraction method can only extract ions from one side of the ion atomizer.
At the same time, for heavy salt solution, it is easier to block the capillary and it is not easy to clean

Method used

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  • Ion extraction device and method thereof
  • Ion extraction device and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1 Schematically provides the basic structure diagram of the extraction device of the embodiment of the present invention when it is in working condition, as figure 1 As shown, the extraction device includes:

[0029] Hollow cone 2, the hollow cone 2 is in the ion atomization body formed by the ion source 1, and the cone faces the advancing direction of the ion flow; in order to further improve the ion extraction efficiency, preferably, the axis of the hollow cone coincides with the central axis of the ion flow.

[0030] two or more through holes 4, figure 2 Schematically provides the basic structure diagram of the extraction device of the embodiment of the present invention, as figure 2 As shown, the two or more through holes 4 are arranged on the cone surface of the hollow cone 2, deviated from the central axis of the hollow cone 2, and the two or more through holes The included angle between the axis of the hole 4 and the axis of the hollow cone 2 is grea...

Embodiment 2

[0040] An application example of the extraction device and method according to Embodiment 1 of the present invention in a mass spectrometer, in this application example, it is used to detect liquid.

[0041] In this application example, two through-holes are provided on the conical surface of the hollow cone, and the central axes of the two through-holes are on the same conical surface and distributed symmetrically, and the axis and the hollow cone The angle between the central axes is 60 degrees. The central axis of the hollow cone coincides with the central axis of the ion atomizing body.

Embodiment 3

[0043] An application example of the extraction device and method according to Embodiment 1 of the present invention in a mass spectrometer, in this application example, it is used to detect liquid.

[0044] In this application example, five through holes are arranged on the conical surface of the hollow cone, and the central axes of the five through holes are on the same conical surface, and the distance between the axis and the central axis of the hollow cone is The included angle is 50 degrees. The central axis of the hollow cone coincides with the central axis of the ion atomizing body.

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Abstract

This invention discloses an ion extraction device. The ion extraction device comprises a hollow cone body and two or more than two through holes, wherein the cone surface of the hollow cone body faces towards the forward direction of ion flow; the two or more than two through holes are formed in the cone surface of the hollow cone body and deviate the central axis of the hollow cone body, and the included angle between the axis of the two or more than two through holes and the axis of the hollow cone body is larger than 0 degree. The invention further discloses an extraction method of the ion extraction device. The ion extraction device and the ion extraction method have the advantages of being high in efficiency, improving detection sensitivity and detection limit, and the like.

Description

technical field [0001] The invention relates to the field of mass spectrometry, in particular to an ion extraction device and method. Background technique [0002] At present, mass spectrometers mostly rely on single-hole extraction cones for the extraction of ions. By adjusting the position of the ion source, the extraction cone is close to the surface, and under the combined action of the electric field and the gas field, the ions enter the extraction cone. [0003] At present, the vast majority of mass spectrometer extraction structures use the single-cone top single-hole extraction method, generally side extraction. This collection method can only collect a part of the ions on the side, and most of the ionized measured substances are wasted, seriously affecting the sensitivity and accuracy of the instrument. [0004] Agilent adopts the six-hole capillary technology, using a circle of six capillary parallel sampling components placed on the side of the conical ion atomi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04B01D11/00G01N27/62
Inventor 慎石磊邓丰涛李纲李文
Owner FOCUSED PHOTONICS