一种光电离四极杆质谱装置
By designing a photoionization quadrupole mass spectrometer, and utilizing a combination of a sealed cavity and a quadrupole pre-barrel, the photon and sample utilization rates of the photoionization source are improved. This solves the problem of low ion source and sample utilization rates in quadrupole mass analyzers, and achieves more efficient sample ionization and detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TSINGHUA SHENZHEN INTERNATIONAL GRADUATE SCHOOL
- Filing Date
- 2023-11-15
- Publication Date
- 2026-07-17
AI Technical Summary
The quadrupole mass analyzer has low ion source and sample utilization. The photoionization source has low ionization efficiency due to photon dispersion and gas diffusion in a vacuum environment, which cannot fully utilize the sample.
Design a photoionization quadrupole mass spectrometer, including a mass spectrometer vacuum chamber, a photoionization source, a sealed chamber, a sample inlet tube, an emission ion gate, and a quadrupole main rod. The gaseous sample is confined by the sealed chamber, and the embedded quadrupole pre-rod provides a radio frequency electric field of the same nature. The positive electrode of the photoionization source acts as a repulsion electrode. The emission ion gate and the sample inlet tube are designed with specific angles and apertures to ensure efficient utilization of photons and ions within the quadrupole field.
It improves the photon utilization and sample utilization of the photoionization source, enhances the sensitivity and resolution of the instrument, solves the problem of low ionization efficiency caused by photon dispersion and gas diffusion in the photoionization source, and achieves more efficient sample ionization and detection.
Smart Images
Figure CN117558611B_ABST