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Thermal Desorption Sampler Ion Mobility Spectrometry Gas Path

A technology for ion mobility spectrometry and thermal desorption sampling, which is applied in the field of ion mobility spectrometry gas path of thermal desorption sampler, can solve the problems such as short service life of ion mobility spectrometer purifiers, and achieve wide application range, multiple functions, and low operating cost. cost effect

Inactive Publication Date: 2016-12-21
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

IMS purifiers with direct or thermal desorption injection typically have shorter lifetimes than closed-loop injectors

Method used

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  • Thermal Desorption Sampler Ion Mobility Spectrometry Gas Path
  • Thermal Desorption Sampler Ion Mobility Spectrometry Gas Path
  • Thermal Desorption Sampler Ion Mobility Spectrometry Gas Path

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Embodiment Construction

[0031] The ion mobility spectrometer gas path of the thermal analysis sampler is used for the ion transfer tube, including the ion transfer tube and the sample injector 1, and the ion transfer tube is provided with a sample inlet 18, a gas outlet 9, and a drift gas port 12 in sequence. It can realize basic functions such as detection, standby, and blowback, and prolong the service life of the purifier.

[0032] The ion transfer tube is composed of an ionization source 17 , a reaction area 16 , an ion gate 15 , a transfer area 14 and a receiving electrode 13 . The sample forms ions in the reaction zone 16 under the action of the ionization source 17, and the pulse-controlled ion gate 15 allows some ions to enter the migration zone 14, and reach the receiving electrode 13 under the action of an electric field to form an ion mobility spectrum.

[0033] The sample injector 1 realizes the sampling function of the sample, and the sample injector 1 is provided with a gas outlet 19 an...

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Abstract

A thermal analysis sample injector ion mobility spectrometry air circuit is an air circulation system composed of an ion mobility tube, an air drive device and a purification device, the basic functions of detection, standby, back flushing and the like can be achieved, and the service life of a purification agent is prolonged. The thermal analysis sample injector ion mobility spectrometry air circuit further has the functions of carrier gas distribution, non-airflow sampling injection and flow dynamic regulation. Due to the functions, an ion mobility spectrometry has more working modes and a wider use range.

Description

technical field [0001] The invention relates to an ion mobility spectrometer gas circuit of a thermal analysis sample injector, specifically a gas circulation system composed of an ion transfer tube, a gas drive device and a purification device. This patent uses a thermal analysis sample injector as an example for illustration. Background technique [0002] Ion mobility spectrometry works under atmospheric pressure, and it is famous for its compact structure, simple operation, portability, high sensitivity and fast response time. [0003] The ion transfer tube usually consists of a reaction zone and a migration zone, in which the sample is ionized into ions by an ionization source. Under the action of the ion gate pulse, it enters the migration area, and under the action of the electric field, it reaches the receiving electrode to form a signal. The ion transfer tube usually uses two gases and one as the carrier gas to bring the sample into the ion transfer tube. One way i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/04G01N27/64
Inventor 仓怀文李海洋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI