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Ion source system and mass spectrometer with atmospheric pressure interface

一种大气压离子源、离子源的技术，应用在质谱分析领域，能够解决真空离子源质谱仪样品形态限制、离子源质谱仪离子传输效率低等问题，达到适用性广泛、提高离子传输效率、保证稳定性的效果

Active Publication Date: 2017-05-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0007] In order to overcome a series of technical defects such as the low ion transmission efficiency of the existing atmospheric pressure interface ion source mass spectrometer, and the vacuum ion source mass spectrometer is limited by the shape of the sample, to find an ion source system with wider applicability, the purpose of the present invention is to provide a Ion Source Systems with Atmospheric Pressure Interface

Method used

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  • Ion source system and mass spectrometer with atmospheric pressure interface
  • Ion source system and mass spectrometer with atmospheric pressure interface
  • Ion source system and mass spectrometer with atmospheric pressure interface

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Embodiment

[0045] use as figure 1 In the mass spectrometer shown, the atmospheric pressure ion source is a Nano-ESI ion source, the vacuum ion source is a plasma discharge device, and the interface between the atmospheric pressure ion source and the vacuum ion source is a stainless steel capillary with an inner diameter of 125 μm. The vacuum range is 1-10Torr, and only a small vacuum pump can meet the above vacuum requirements.

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Abstract

The invention provides an ion source system with an atmospheric pressure interface, which includes an atmospheric pressure ion source, wherein a vacuum ion source is connected downstream of the atmospheric pressure ion source. The invention also provides a mass spectrometer using the ion source system described in the invention as an ion source. The ion source system provided by the present invention adopts a combination of an atmospheric pressure ion source and a vacuum ion source, is applicable to detection samples of various forms, and can carry out secondary ionization on the samples to be tested to ensure the transmission efficiency of ions. The mass spectrometer provided by the invention can significantly improve the transmission efficiency of ions, realize continuous sample injection detection, improve the scanning speed of the instrument, and is especially suitable for miniaturized mass spectrometers.

Description

technical field [0001] The invention relates to the field of mass spectrometry, in particular to an ion source system with an atmospheric pressure interface and a mass spectrometer. Background technique [0002] Mass spectrometry is an analytical method that separates and detects compounds according to different mass-to-charge ratios (m / z) to identify components and structures. Mass spectrometry is a biochemical analysis technique with high sensitivity and high selectivity. As a qualitative and quantitative chemical analysis method, it has been widely used in academic research, industrial product development, legal identification, supervision and other fields. In recent years, especially after major scientific and social events such as the anti-terrorist chemical warfare crisis, food, environmental safety and outer space exploration, the demand for on-site chemical analysis in my country and other countries in the world has surged. [0003] Ion sources working under atmosph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/10
CPCH01J49/107H01J49/165
Inventor 徐伟卞存娟翟雁冰方向熊行创江游
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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