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公开(公告)号：US20240385148A1
公开(公告)日：2024-11-21
申请号：US18624658
申请日：2024-04-02
Applicant: SHIMADZU CORPORATION
Inventor： Yusuke NAGAI , Katsumasa SAKAMOTO , Takuya YOSHIOKA , Yosuke IWATA
Abstract: Included are a sample supplier (2) configured to generate a sample fluid containing gas and liquid by causing two or more kinds of fluids to react with each other and to supply the sample fluid, a gas-liquid separator (4) provided downstream of the sample supplier (2), the gas-liquid separator (4) having a separation space (24) for separating gas and liquid in the sample fluid supplied from the sample supplier (2) from each other, a gas outlet (30) for releasing the gas in the sample fluid from the separation space (24), and a liquid outlet (28) for taking out the liquid in the sample fluid from the separation space (24), a liquid channel (32;42) fluidly connected to the liquid outlet (28) of the gas-liquid separator (4), a back pressure regulator (8) provided on the liquid channel (32; 34), an analysis channel (38; 40) constituting a liquid chromatograph for analyzing the liquid separated from the gas in the gas-liquid separator (4), and a sampling part (6) configured to take out the liquid flowing through the liquid channel (32; 42) and introduce the liquid into the analysis channel (40) between the liquid outlet (28) and the back pressure regulator (8) on the liquid channel (32; 42).
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公开(公告)号：US20220163495A1
公开(公告)日：2022-05-26
申请号：US17441936
申请日：2019-03-27
Applicant: SHIMADZU CORPORATION
Inventor： Masanori FUJIWARA , Katsumasa SAKAMOTO
Abstract: In an ion chromatograph, a sample that is included in an eluent and is to be measured is separated into ion species components by a separation column. An electrode liquid to be introduced into an input port is branched by a three-way valve and is discharged from each of a first output port and a second output port. An eluent from the separation column passes through an eluent flow path of an ion suppressor. An electrode liquid from the first and second output ports passes through each of an anode-side flow path and a cathode-side flow path of the ion suppressor. Ion exchange is performed by electrolysis between an eluent that passes through the eluent flow path and an electrode liquid that passes through the anode-side flow path and the cathode-side flow path, and a sample that passes through the eluent flow path and is separated by the separation column is detected by a detector. A backward flow of an electrode liquid in the cathode-side flow path is suppressed by a backward flow suppression mechanism.
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Patent Agency Ranking
公开(公告)号：US20240302250A1
公开(公告)日：2024-09-12
申请号：US18594095
申请日：2024-03-04
Inventor： Takuya YOSHIOKA , Yosuke IWATA , Yusuke NAGAI , Katsumasa SAKAMOTO , Takuji SHODA , Tomoaki SAKAMOTO
Abstract: A liquid sampling method in a flow monitoring system including a sampling section having a needle for performing sampling of a liquid, an analysis section that performs analysis of the liquid sampled by the sampling section, and a fluid supply section that supplies a sample fluid in a state of gas-liquid two-phase flow containing a gas phase and a liquid phase with the sample remaining in the state of gas-liquid two-phase flow. The liquid sampling method includes: a storage step of storing, in the storage container, a liquid phase contained in the sample fluid; a separation step of separating, from a liquid phase, a gas phase contained in the liquid phase stored in the storage container; and an injection step of suctioning, as a sample, the liquid phase stored in the storage container from a distal end of the needle after the separation step and injecting a predetermined amount of the sample into the analysis section through the injection port.
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公开(公告)号：US20220155265A1
公开(公告)日：2022-05-19
申请号：US17599768
申请日：2019-04-01
Applicant: SHIMADZU CORPORATION
Inventor： Katsumasa SAKAMOTO , Masanori FUJIWARA
Abstract: First and second flow-path portions are opposite to each other, and communicate with each other such that a direction in which an eluent flows through the first flow-path portion and a direction in which an eluent flows through the second flow-path portion are opposite to each other. First and second electrode liquid flow paths are respectively opposite to the first and second flow-path portions. First and second electrode liquids are respectively supplied to the first and second electrode liquid flow paths, such that a direction in which the first electrode liquid flows through the first electrode liquid flow path is same as a direction in which an eluent flows through the first flow-path portion and a direction in which the second electrode liquid flows through the second electrode liquid flow path is same as a direction in which an eluent flows through the second flow-path portion.
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公开(公告)号：US20220146476A1
公开(公告)日：2022-05-12
申请号：US17441665
申请日：2019-03-27
Applicant: SHIMADZU CORPORATION
Inventor： Masanori FUJIWARA , Katsumasa SAKAMOTO
Abstract: First and second electrode liquid seal members are arranged between a first electrode and a second electrode. First and second ion exchange membranes are arranged between a first electrode liquid seal member and a second electrode liquid seal member. An eluent seal member is arranged between a first ion exchange membrane and a second ion exchange membrane. Ion exchange is performed between an eluent that passes through an eluent flow path of the eluent seal member from a separation column and an electrode liquid that passes through each of electrode liquid flow paths of the first and second electrode liquid seal members. In a first surface of the eluent seal member that comes into contact with the first ion exchange membrane, a first projection that surrounds the entire circumference of the eluent flow path to extend along the edge of the eluent flow path and projects toward the first ion exchange membrane is formed.
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公开(公告)号：US20220187254A1
公开(公告)日：2022-06-16
申请号：US17442200
申请日：2019-03-27
Applicant: SHIMADZU CORPORATION
Inventor： Katsumasa SAKAMOTO , Masanori FUJIWARA
IPC: G01N30/02
Abstract: First and second electrode liquid seal members are arranged between a first electrode and a second electrode. First and second ion exchange membranes are arranged between the first electrode liquid seal member and the second electrode liquid seal member. An eluent seal member is arranged between the first ion exchange membrane and the second ion exchange membrane. A plurality of first mesh members having different charge amounts are stacked in a first electrode liquid flow path of the first electrode liquid seal member. Each of the plurality of first mesh members is constituted by a first wire group composed of a plurality of first wires and a second wire group composed of a plurality of second wires crossing the first wire group. The plurality of first wire groups of the plurality of first mesh members respectively extend in different directions, and the plurality of second wire groups of the plurality of first mesh members respectively extend in different directions and extend in directions different from those of the plurality of first wire groups.
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公开(公告)号：US20200147518A1
公开(公告)日：2020-05-14
申请号：US16629385
申请日：2017-07-24
Applicant: Shimadzu Corporation
Inventor： Katsumasa SAKAMOTO
Abstract: An ion suppressor includes ion exchange membranes between a pair of electrodes. Regeneration liquid channels are provided in the spaces between the electrodes and the ion exchange membranes, and an eluent channel is provided between the ion exchange membranes. Ion re-exchange in the eluent on the downstream side of the eluent channel is suppressed, thereby making it possible to improve the detection sensitivity for the ion to be measured. For example, the eluent channel has a folded structure, thereby increasing the amount of current on the downstream side of the eluent channel, and thus, the accumulation of ions is suppressed, and accordingly, ion re-exchange in the eluent can be suppressed.
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