US 11,915,919 B2
Mass spectrometer
Tomoya Kudo, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Appl. No. 17/600,353
Filed by SHIMADZU CORPORATION, Kyoto (JP)
PCT Filed May 27, 2019, PCT No. PCT/JP2019/020809
§ 371(c)(1), (2) Date Sep. 30, 2021,
PCT Pub. No. WO2020/240640, PCT Pub. Date Dec. 3, 2020.
Prior Publication US 2022/0130656 A1, Apr. 28, 2022
Int. Cl. H01J 49/04 (2006.01); G01N 30/72 (2006.01); H01J 49/00 (2006.01)
CPC H01J 49/045 (2013.01) [G01N 30/7266 (2013.01); H01J 49/0009 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A mass spectrometer comprising:
a first spray unit that sprays a first sample into a first space;
a second spray unit that sprays a second sample into the first space or a second space communicating with the first space;
a determination unit that determines whether or not the second sample is sprayed from the second spray unit;
a gas supply unit that supplies gas that prevents the second sample sprayed into the first space or an ion derived from the second sample from reaching the first spray unit; and
a control unit that controls supply of the gas from the gas supply unit,
wherein the control unit starts the supply of the gas from the gas supply unit into the first space in a case where the determination unit determines that the second sample is sprayed from the second spray unit.