公开(公告)号：US20230420239A1

公开(公告)日：2023-12-28

申请号：US17960447

申请日：2022-10-05

Applicant: Shimadzu Corporation

Inventor： Keisuke ISO

IPC: H01J49/16 ,  H01J49/04 ,  G01N30/72

CPC classification number: H01J49/165 ,  H01J49/044 ,  H01J49/0477 ,  G01N30/7246

Abstract: In an ionization device for an ionization chamber (11) separated from an analysis chamber (12-14) by a partition wall having an ion introduction port (113), an ionization probe (111) sprays a liquid sample. A heated-gas supply mechanism (112), which includes a gas supply source and a heating section (1122) for heating a gas supplied from the gas supply source, expels the gas in a direction intersecting with the direction in which the liquid sample is sprayed from the ionization probe. A controller (32) controls an operation of the heated-gas supply mechanism so that the gas is continuously expelled from the heated-gas supply mechanism regardless of the presence or absence of an operation by a user while the liquid sample is sprayed from the ionization probe. The continuous expulsion of the gas from the heated-gas supply mechanism prevents this mechanism from being contaminated by the sprayed liquid.

公开(公告)号：US20240379339A1

公开(公告)日：2024-11-14

申请号：US18686152

申请日：2021-08-24

Applicant: SHIMADZU CORPORATION

Inventor： Keisuke ISO ,  Yuki TANAKA ,  Fumihiko HIRATA ,  Shingo FUJIOKA

IPC: H01J49/16 ,  G01N30/72 ,  H01J49/04

Abstract: An ionizer disposed in an ionization chamber separated from an analysis chamber by a partition provided with an ion introduction port, the ionizer including: an electrospray ionization probe 111 configured to charge and nebulize a liquid sample as charged droplets, the electrospray ionization probe being disposed such that a nebulization axis is orthogonal to a central axis of the ion introduction port; and a heated gas supply mechanism configured to blow a heated gas to a position between a tip of the electrospray ionization probe and an intersection point X of the nebulization axis and the central axis, where the position is separated from the tip by a predetermined distance or more.