US 12,424,430 B2
Ion storage system and method based on quadrupole-ion trap tandem mass spectrometry
Shiying Chu, Beijing (CN); You Jiang, Beijing (CN); Xiang Fang, Beijing (CN); Zejian Huang, Beijing (CN); Xinhua Dai, Beijing (CN); Yuting An, Beijing (CN); and Di Zhang, Beijing (CN)
Assigned to NATIONAL INSTITUTE OF METROLOGY, CHINA, Beijing (CN)
Filed by National Institute of Metrology, China, Beijing (CN)
Filed on Nov. 29, 2022, as Appl. No. 18/071,190.
Application 18/071,190 is a continuation of application No. PCT/CN2021/080045, filed on Mar. 10, 2021.
Claims priority of application No. 202010651850.3 (CN), filed on Jul. 8, 2020.
Prior Publication US 2023/0094398 A1, Mar. 30, 2023
Int. Cl. H01J 49/42 (2006.01); H01J 49/06 (2006.01)
CPC H01J 49/4295 (2013.01) [H01J 49/063 (2013.01); H01J 49/4225 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An ion storage system based on a quadrupole-ion trap tandem mass spectrometry, comprising 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 that are sequentially arranged, wherein a first lens disposed between the first ion guide and the second ion guide; and a second lens and a third lens are disposed between the second ion guide and the quadrupole mass analyzer,
wherein the first ion guide is a quadrupole for collisional focusing and transmission of ions in second-stage vacuum, and
wherein the second ion guide is a quadrupole for collisional focusing and transmission of ions in third-stage vacuum.