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Atmospheric pressure interface device and mass spectrometer

An interface device, atmospheric pressure technology, applied in the field of mass spectrometry, can solve the problems of poor durability of atmospheric pressure sampling interface and low ion transmission efficiency, and achieve the effects of increasing strength, ensuring ion transmission rate, and being easy to manufacture.

Inactive Publication Date: 2015-11-25
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is that when the open ion source emits ions to the mass analyzer, the ion transmission efficiency is low, and the atmospheric pressure sampling interface of the mass spectrometer has poor durability

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  • Atmospheric pressure interface device and mass spectrometer
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  • Atmospheric pressure interface device and mass spectrometer

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Embodiment Construction

[0034] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations therein are illustrative in nature and not intended to limit the present invention. invention.

[0035] Atmospheric pressure interface device implementation

[0036] Such as figure 1 and figure 2 As shown, in this embodiment, the atmospheric pressure interface device proposed by the present invention mainly includes an interface end plate 1 , a sealing device 3 and a housing 2 with a vacuum cavity 4 .

[0037] Such as figure 2 As shown, in this embodiment, the interface end plate 1 is provided with a through hole 10 . The through hole 10 includes a tapered hole portion 100 and a column hole portion 101, wherein one surface p...

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Abstract

An atmospheric pressure interface device and mass spectrometer; the atmospheric pressure interface device comprises an interface end plate (1) and a sealing device (3); the interface end plate (1) is provided with a through hole (10) thereon; the through hole (10) comprises a tapered hole portion (100) and a cylindrical hole portion (101); the tapered hole portion (100) is in a conical barrel shape, and the end having a larger hole diameter opens on one surface of the interface end plate (1), and corresponds to the sealing device (3); the cylindrical hole part (101) has a cylindrical barrel shape, and one end opens on the other surface of the interface end plate (1), and the other end is connected to the end of the tapered hole portion (100) having a smaller hole diameter; the center line of the tapered hole portion (100) coincides with the center line of the cylindrical hole part (101); and the sealing device (3) is provided outside the interface end plate (1), and seals the through hole (10) in an opening / closing manner. The atmospheric pressure interface device ensures the ion transmission rate and the vacuum sealing performance of a vacuum chamber (4). The mass spectrometer of the present invention is easy to manufacture and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of mass spectrometry, in particular to an atmospheric pressure interface device of a mass spectrometer. Background technique [0002] Mass spectrometry is an analytical method that separates and detects compounds according to different mass-to-charge ratios to identify components and structures. Due to its high specificity and sensitivity, mass spectrometry has been widely used in the fields of biological and chemical analysis as a qualitative and quantitative chemical analysis method. [0003] In the existing mass spectrometry methods, ion sources working at atmospheric pressure (such as nano-ESI nanoliter electrospray ionization source, ESI electrospray ionization source, APCI atmospheric pressure chemical ionization source, etc.) are usually used as the excitation source for the sample to be analyzed. This type of ion source has the characteristics of convenient sample switching, and as a relatively inde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/04
CPCG01N30/72H01J49/04
Inventor 徐伟韦永政卞存娟方向
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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