Mobile type gas detection mass spectrometer device

Abstract

The invention discloses a mobile type gas detection mass spectrometer device. The mobile type gas detection mass spectrometer device comprises a gas inlet unit, a dissociative unit, and an analysis unit. The gas inlet unit has a function of inhaling external gas, and is used to maintain a 10-8mbar high vacuum state of a negative pressure vacuum system. The dissociative unit is used to provide high voltage, and then the inhaled gas exists in a dissociative ionic state. The analysis unit is cooperated with the dissociative unit, and the dissociative ions move to the analysis unit to detect the number of the ions, and is used to analyze the mass charge ratio (m / e) of the dissociative ionic state, and a mass spectrum analysis is generated. The mobile type gas detection mass spectrometer device is characterized in that by using the dissociative unit, the dissociative ions can move to the analysis unit toward the same axial direction in a concentrated manner with a help of structural design, and the minimum of the required dissociative gas ions is analyzed, and then the whole size is reduced to a portable size, and therefore timely detection effect is achieved, time costs are greatly reduced, and convenience during use is improved.

Description

technical field [0001] The present invention relates to a mass spectrometer with the function of detecting ambient gas, in particular to a mass spectrometer with the function of mobile detecting ambient gas. Background technique [0002] At present, mass spectrometers are the major gas detection machines on the market. Through mass spectrometry, people can know the molecular weight of the analyte in a sample, and then cooperate with further comparison to confirm the true identity of the analyte. Therefore, since 20 Since its development in the early 2000s, the mass spectrometer used to implement mass spectrometry has the advantages of easy operation and quick detection results, and has become a widely used identification tool in various fields. [0003] There are different types of existing mass spectrometers: (1) The diffusion pump is used to pump air to maintain a negative pressure state. If this type of mass spectrometer is in a state of external vibration, the internal o...

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Problems solved by technology

[0003] There are different types of existing mass spectrometers: (1) Diffusion pumps are used to pump air to maintain a negative pressure state. If this type is in a state of external vibration, its internal oil is easy to seep into the vacuum system, affecting the operation of the mass spectrometer and Interpretation; (2) Use the turbine to rotate at a high speed to maintain a negative pressure state. If there is external vibration, the bearing of the turbine is easy to damage

Therefore, the common mass spectrometers currently on the market cannot effectively avoid shocks. Generally, it is very troublesome to detect in disaster areas (ex: Kaohsiung gas explosion site), and it is not time-sensitive and difficult to use, causing operators to be troubled in use.

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