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Ion source system and mass spectrometer for atmospheric pressure interface

An atmospheric pressure ion source and ion source technology, which are applied in the field of mass spectrometry, can solve the problems of low ion transmission efficiency of ion source mass spectrometer and limited sample shape of vacuum ion source mass spectrometer, and achieve the improvement of ion transmission efficiency, wide applicability, and ionization. The effect of improved transmission efficiency

Active Publication Date: 2015-04-29
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 for atmospheric pressure interface
  • Ion source system and mass spectrometer for atmospheric pressure interface
  • Ion source system and mass spectrometer for 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

Provided is an ion source system for an atmospheric pressure interface, comprising an atmospheric pressure ion source (1), the atmospheric pressure ion source (1) being connected downstream to a vacuum ion source (2). Also provided is a mass spectrometer, using the present ion source system as an ion source. The present ion source system uses a combination of the atmospheric pressure ion source (1) and the vacuum ion source (2), is suitable for test samples having a variety of forms, and performs secondary ionization on a sample to be tested, thus ensuring ion transmission efficiency. The present mass spectrometer significantly increases ion transmission efficiency, thus enabling continuous introduction of samples and testing, and increasing the scanning speed of the spectrometer, particularly suitable for miniaturized 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...

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Application Information

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Patent Type & Authority Applications(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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