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An apparatus for connecting a quadrupole rod analyzer and a 3D ion trap analyzer in series

A technology for analyzers and quadrupoles, applied to electron/ion optical devices, parts of particle separator tubes, particle separation tubes, etc., can solve problems such as low efficiency, improve stability and directionality, and reduce edge Field disturbance, efficiency improvement effect

Active Publication Date: 2014-02-19
SINOMS BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned shortcoming of the prior art, the object of the present invention is to provide a kind of device that the quadrupole analyzer and the 3D ion trap analyzer are connected in series, for solving the problem in the prior art that ions enter the 3D ion trap from the quadrupole low efficiency problem

Method used

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  • An apparatus for connecting a quadrupole rod analyzer and a 3D ion trap analyzer in series
  • An apparatus for connecting a quadrupole rod analyzer and a 3D ion trap analyzer in series
  • An apparatus for connecting a quadrupole rod analyzer and a 3D ion trap analyzer in series

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Embodiment 1

[0045] Such as figure 1 As shown, this embodiment provides a device in which a quadrupole analyzer and a 3D ion trap analyzer are connected in series, the device includes a quadrupole analyzer 1, a rear pre-rod 2, a gate electrode 3, and a 3D ion trap analysis Device 4, guard electrode 5, dynode 6, and detector 7.

[0046]The quadrupole analyzer 1 consists of four precisely parallel rods carrying a direct current voltage (DC) and a superimposed radio frequency voltage (RF). Two opposite parallel rods form a pair of electrodes, and four parallel rods form two pairs of electrodes. Each pair of electrodes is equipotential, and the potential between the two pairs of electrodes is opposite. The two pairs of electrodes can be hyperbolic electrodes or cylindrical electrodes. In this embodiment, a cylindrical electrode is temporarily used as an example for illustration, but it is not limited thereto. The quadrupole analyzer 1 has two ends, the first end 10 of which is used as an i...

Embodiment 2

[0061] Such as image 3 As shown, in this embodiment, a simple quadrupole analyzer is provided in series with a 3D ion trap analyzer. The difference from Embodiment 1 is that the first embodiment uses a 3D ion trap analyzer 1. The first end cap electrode 40 and the second end cap electrode 42 are flat end caps, the diameter of the end cap electrode hole 43 is 8mm, and the end cap electrode hole 43 has a 10-mesh stainless steel mesh. The structures of other parts are the same as those in the first embodiment, and will not be repeated here.

[0062] It should be noted that the 3D ion trap analyzer in the tandem device of the quadrupole analyzer and the 3D ion trap analyzer of the present invention is not limited to the types in Embodiment 1 and Embodiment 2, and can also be other types in other embodiments. 3D ion trap analyzers, such as cylindrical ion trap analyzers, etc.

[0063] To sum up, the present invention proposes a device in which a quadrupole analyzer is connected ...

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Abstract

The invention provides an apparatus for connecting a quadrupole rod analyzer and a 3D ion trap analyzer in series. The apparatus comprises a quadrupole rod analyzer, post-quads, a gate electrode, a 3D ion trap analyzer, a protective electrode, a dynode, and a detector which are successively disposed. The apparatus uses the post-quads behind the quadrupole rod analyzer to cool ions on a central axis for certain time and to lengthen the effective length of the quadrupole rod analyzer for reducing the interference of an edge field, and uses the gate electrode in order to preliminarily accelerate and focus ion passing and to enhance the stability and the directionality of outputted ions. Therefore, the ions are easy to pass through an end cover electrode hole of the 3D ion trap or are stopped from passing in order to cooperate with the normal operation of the apparatus. In addition, the efficiency for entering the 3D ion trap of the ions is increased by enlarging the size of the end cover electrode hole or applying a stainless steel net to the end cover electrode hole.

Description

technical field [0001] The invention relates to a series connection device of different types of mass analyzers, in particular to a series connection device of a quadrupole analyzer and a 3D ion trap analyzer. Background technique [0002] Quadrupole analyzer (or called quadrupole, quadrupole mass analyzer, quadrupole mass spectrometer, Quad, Q) is a very mature classical mass filter, that is, mixed ions enter from one end, pass direct current (DC) , The movement screening of the radio frequency (RF) electric field allows only one kind of mass-to-charge ratio (m / z) ions or a section of m / z ions to pass through, and the rest of the ions are eliminated on the quadrupole electrode by collision. And all ions have energy from 0.01eV to several eV when passing through the quadrupole, and do not stay in the quadrupole for more than 50ms. The front and rear pre-rods can be installed on the front and back of the quadrupole, and work under the pure radio frequency (RF only) electric ...

Claims

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Application Information

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IPC IPC(8): H01J49/00H01J49/06
Inventor 徐国宾江宗耀潘鑫渊杨芃原
Owner SINOMS BIOTECH CO LTD
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