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Ion source and ion mobility spectrometer

An ion source and ion cluster technology, applied in the field of ion mobility spectrometry detection, can solve the problems of high sample consumption, high power consumption and high voltage requirements, and achieve the effects of small thermal inertia, low power consumption and small size

Pending Publication Date: 2017-02-22
SUZHOU WEIMU INTELLIGENT SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved in the present invention is to use the thrust of the sampling pump and the effect of the strong traction electric field to make the sample solution output by the sampling pump form an atomized ion cluster, which consumes a lot of samples, requires high voltage, and consumes a lot of power.

Method used

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  • Ion source and ion mobility spectrometer
  • Ion source and ion mobility spectrometer
  • Ion source and ion mobility spectrometer

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Experimental program
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Effect test

Embodiment 1

[0029] like figure 1 As shown, this embodiment provides an ion source, including: a sampling tube 3, a condensation needle 4, a cooling assembly 2, a counter electrode piece 5 and a high-voltage power supply 6, and the sampling tube 3 is used to introduce a sample mixed in water vapor , the cooling assembly 2 is connected to one end of the condensation needle 4, and is used to reduce the temperature on the condensation needle 4, so that the sample mixed in water vapor condenses on the condensation needle 4, and the high-voltage power supply 6 is connected to the condensation needle 4 and the counter electrode sheet 5 An electric field is formed between them to break the droplets condensed on the other end of the condensation needle 4 into ionized sprays moving towards the opposite electrode sheet 5 . The above-mentioned condensation needle 4 may be solid, and the condensation needle 4 is not directly connected or contacted with the sampling tube 3 .

[0030] The ion source pr...

Embodiment 2

[0036] This embodiment provides an ion mobility general instrument, comprising:

[0037] The ion source described in the above-mentioned embodiment 1 is used to form the atomized ion cluster of the sample;

[0038] Ion transfer tube, used to transfer the atomized ion cluster of the sample;

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Abstract

The invention belongs to the technical field of ion mobility spectrometry and provides an ion source and an ion mobility spectrometer. The ion source comprises a sample feeding tube, a condensation needle, a cooling component, a counter electrode plate and a high-voltage power source. The sample feeding tube is used for guiding a sample mixed in water vapor; the cooling component is connected with one end of the condensation needle and used for cooling the condensation needle to enable the sample in the water vapor to condense on the condensation needle; the high-voltage power source forms an electric field between the condensation needle and the counter electrode plate to break liquid drops condensed at the other end of the condensation needle into ionized mist moving towards the counter electrode plate. Compared with a traditional ion source, the ion source has advantages of low sample quantity, low required voltage and low power consumption.

Description

technical field [0001] The invention relates to the technical field of ion mobility spectrometry detection, in particular to an ion source and an ion mobility spectrometer. Background technique [0002] Ion Mobility Spectrometry (IMS for short), also known as Ion Mobility Spectrometry, is a new gas phase separation and detection technology that appeared in the early 1970s. It is an analytical technique for characterizing substances based on differences in the migration rates of gas-phase ions in an electric field. Compared with traditional detection techniques such as chromatography and mass spectrometry, it has the advantages of simple equipment structure, working under normal pressure without vacuum system, high detection sensitivity, fast analysis speed, easy miniaturization and portability, etc. Among them, the ion source is an important part of IMS technology, and plays a key role in the process of ionizing sample molecules into sample ions. [0003] The traditional i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N27/64H01J49/26H01J49/10
CPCH01J49/10H01J49/26G01N27/62G01N27/64
Inventor 汪小知肖鹏张信华李灵锋王向阳李鹏
Owner SUZHOU WEIMU INTELLIGENT SYST CO LTD
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