A gas path for automatic analysis, sampling and calibration of ion mobility spectrometry

By designing an automatically switched gas circuit, using components such as control devices and solenoid valves, the residual and interference problems caused by gas circuit crossing in the ion migration spectrum are solved, and the independence of analysis, sampling and calibration is achieved, ensuring the accuracy of the analysis results. Rapid recovery of sex and instrumentation.

CN113960151BActive Publication Date: 2025-01-14DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
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Patent Information

Application Number
CN202010632539.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-07-03
Publication Date
2025-01-14
Estimated Expiration
2040-07-03

AI Technical Summary

Technical Problem

In the process of automatic analysis, sampling and calibration, ion migration spectrum involves a variety of different gas paths such as analysis, sampling and calibration, which leads to the intersection of gas paths and increases the possibility of residual and interference.

Method used

A gas path for automatic analysis, sampling and calibration is designed. By switching the gas path, the control device, quantitative tube cavity, calibration liquid cavity and migration tube are used to realize the analysis function, sampling process and calibration functions, using two-bit Components such as three-way solenoid valves and air extraction sampling pumps ensure separation and switching of air flow.

Benefits of technology

The independence and function separation of the gas circuit are achieved, the residues of samples and calibration fluid are reduced, the accuracy of analysis results and the rapid recovery of the instrument are ensured, and the interference to the next sampling and analysis is reduced.

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Abstract

An air circuit for automatic analysis, sampling and calibration of ion mobility spectrometry, the air circuit comprising a control device I-control device IV, a quantitative tube cavity, a calibration liquid cavity and a migration tube; the control device I-control device IV are each provided with at least one inlet end and two outlet ends; when the control device I-control device IV is working, the inlet end is connected to the first outlet end or the inlet end is connected to the second outlet end; the first outlet end of the control device I is sequentially connected to the control device II, the quantitative tube cavity, the control device III and the migration tube; the second outlet end of the control device I is sequentially connected to the calibration liquid cavity, the control device IV and the migration tube; the control device II is also connected to an air extraction sampling pump; the calibration liquid cavity is filled with calibration liquid for releasing calibration liquid gas. By switching the air circuit for automatic analysis, sampling and calibration of ion mobility spectrometry, the analysis function, sampling process and calibration functions can be realized respectively.
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Citation Information

Patent Citations

  • Thermal analysis sample injector ion mobility spectrometry air circuit

    CN103854949A

  • Ion mobility spectrometer with double-circulation gas circuits

    CN104091752A

  • An ion mobility spectrometer and its gas path control method

    CN104715999B

  • Gas circuit for automatic analysis, sampling and calibration of ion mobility spectrometry

    CN212540227U