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A chemical ionization source device and ionization detection method thereof

A chemical ionization source, ionization source technology, applied in measurement devices, ion sources/guns, circuits, etc., can solve the problems of poor operability of atmospheric pressure chemical ionization sources, easily polluted spectra, etc., to improve the analytical sensitivity of the instrument, The effect of improving ion density and avoiding two-way contamination

Active Publication Date: 2018-10-30
无锡海科科学仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a chemical ionization source device and an ionization detection method thereof, which are used to solve the problem that the spectrogram of the open atmospheric pressure chemical ionization source in the prior art is easily polluted and large Problems with Poor Operability of Atmospheric Pressure Chemical Ionization Sources in Volumetric Reaction Chambers

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  • A chemical ionization source device and ionization detection method thereof
  • A chemical ionization source device and ionization detection method thereof
  • A chemical ionization source device and ionization detection method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Such as Figure 1 to Figure 3 As shown, the chemical ionization source device includes:

[0053] Mass spectrometry inlet 1;

[0054] Mass spectrometry ion transfer tube 2, the mass spectrometry ion transfer tube 2 runs through the mass spectrometry inlet 1;

[0055] Micro-reaction chamber 3, one end of the micro-reaction chamber 3 is fixed on the mass spectrometry inlet 1, and communicates with one end of the mass spectrometry ion transfer tube 2, the micro-reaction chamber 3 includes a cavity 31, a sampling tube A road 32 and a sample outlet pipeline 33, wherein the sample outlet pipeline 33 communicates with one end of the cavity 31, and the sample injection pipeline 32 communicates with the other end of the cavity 31;

[0056] The ionization source discharge needle 4 is fixed on the other end of the micro-reaction chamber 3, and the ionization source discharge needle 4 includes a needle head 41 and a needle tail 42 applying a DC high voltage or a coupling oscillati...

Embodiment 2

[0084] Such as Figure 4 As shown, the chemical ionization source device includes:

[0085] Mass spectrometry inlet 1;

[0086] Mass spectrometry ion transfer tube 2, the mass spectrometry ion transfer tube 2 runs through the mass spectrometry inlet 1;

[0087] Micro-reaction chamber 3, one end of the micro-reaction chamber 3 is fixed on the mass spectrometry inlet 1, and communicates with one end of the mass spectrometry ion transfer tube 2, the micro-reaction chamber 3 includes a cavity 31, a sampling tube A road 32 and a sample outlet pipeline 33, wherein the sample outlet pipeline 33 communicates with one end of the cavity 31, and the sample injection pipeline 32 communicates with the other end of the cavity 31;

[0088] The ionization source discharge needle 4 is fixed on the other end of the micro-reaction chamber 3, and the ionization source discharge needle 4 includes a needle head 41 and a needle tail 42 applying a DC high voltage or a coupling oscillation voltage, ...

Embodiment 3

[0102] Such as Figure 5 As shown, the chemical ionization source device includes:

[0103] Mass spectrometry inlet 1;

[0104] Mass spectrometry ion transfer tube 2, the mass spectrometry ion transfer tube 2 runs through the mass spectrometry inlet 1;

[0105] A micro reaction chamber 3, one end of the micro reaction chamber 3 is fixed on the mass spectrometry inlet 1, and one end of the mass spectrometry ion transfer tube 2 enters the inside of the micro reaction chamber 3, the micro reaction chamber 3 It includes a cavity 31, a sample inlet pipeline 32 and a sample outlet pipeline 33, wherein the sample outlet pipeline 33 is connected to one end of the cavity 31, and the sample inlet pipeline 32 is connected to the other end of the cavity 31. One end through;

[0106] The ionization source discharge needle 4 is fixed on the other end of the micro-reaction chamber 3, and the ionization source discharge needle 4 includes a needle head 41 and a needle tail 42 applying a DC ...

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Abstract

The invention provides a chemical ionization source device and an ionization detection method therefor. The chemical ionization source device comprises a mass spectrum injection port, a mass spectrum ion transfer tube, a micro-reaction chamber, an ionization source discharge needle, a sample injection device, a sample discharge device and a to-be-detected sample device, wherein the mass spectrum ion transfer tube runs through the mass spectrum injection port; one end of the micro-reaction chamber is fixed on the mass spectrum injection port and is communicated with one end of the mass spectrum ion transfer tube; the micro-reaction chamber comprises a cavity, a sample injection pipeline and a sample discharge pipeline; the sample discharge pipeline is communicated with one end of the cavity; the sample injection pipeline is connected with the other end of the cavity; the ionization source discharge needle is arranged at the other end of the micro-reaction chamber; the ionization source discharge needle comprises a needle head and a needle tail for exerting high voltage; the needle tail is located outside the micro-reaction chamber; the sample injection device and the sample discharge device are connected with the sample injection pipeline and the sample discharge pipeline respectively; and the to-be-detected sample device is connected with the sample injection device. Through the chemical ionization source device and the ionization detection method therefor provided by the invention, the problems that a spectrogram of an open-type atmospheric chemical ionization source is easily polluted and an atmospheric chemical ionization source with a large reaction chamber is poor in operability in the prior art are solved.

Description

technical field [0001] The invention relates to an ionization source device and an ionization detection method thereof, in particular to a closed micro chemical ionization source device and an ionization detection method thereof. Background technique [0002] Mass spectrometry (also known as mass spectrometry) is a spectroscopic method that is parallel to the spectrum. In general, it refers to a specialized technique widely used in various disciplines to identify compounds by preparing, separating, and detecting gas-phase ions. Mass spectrometry provides a wealth of structural information in a single analysis, and combining separation techniques with mass spectrometry is a breakthrough in separation science methods. Among many analytical testing methods, mass spectrometry is considered to be a universal method with high specificity and high sensitivity and has been widely used. A mass spectrometer generally consists of a sample introduction system, an ion source, a mass ana...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/14G01N27/68
CPCG01N27/68H01J49/145
Inventor 贾滨张帅杨芃原
Owner 无锡海科科学仪器有限公司