ION STORAGE SYSTEM AND METHOD BASED ON QUADRUPOLE-ION TRAP TANDEM MASS SPECTROMETRY
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United States of America Patent
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Issued Date -
Mar 30, 2023
app pub date -
Nov 29, 2022
filing date -
Nov 29, 2022
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Abstract
The present invention relates to the technical field of mass spectra. Disclosed are a novel ion storage system and method based on a quadrupole-ion trap tandem mass spectrometry. The system sequentially comprises a heating capillary, a tube lens, a skimmer, a first ion guide, a second ion guide, a quadrupole mass analyzer, an ion trap mass analyzer, and a detector; a first lens is provided between the first ion guide and the second ion guide; a second lens and a third lens are provided between the second ion guide and the quadrupole mass analyzer, wherein operation modes of the first ion guide and the second ion guide comprise an ion transmission mode and an ion storage mode. Compared with conventional time sequence control methods, more ions are stored during the same time according to the present invention, thereby improving the sensitivity of the instrument.
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