WO2022153721A1 - 分取液体クロマトグラフ - Google Patents
分取液体クロマトグラフ Download PDFInfo
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- WO2022153721A1 WO2022153721A1 PCT/JP2021/044835 JP2021044835W WO2022153721A1 WO 2022153721 A1 WO2022153721 A1 WO 2022153721A1 JP 2021044835 W JP2021044835 W JP 2021044835W WO 2022153721 A1 WO2022153721 A1 WO 2022153721A1
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- Prior art keywords
- flow path
- suction
- discharge device
- port
- switching valve
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- 239000007788 liquid Substances 0.000 title claims abstract description 73
- 238000000926 separation method Methods 0.000 claims abstract description 39
- 238000005194 fractionation Methods 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims description 53
- 239000007924 injection Substances 0.000 claims description 53
- 239000002904 solvent Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000003125 aqueous solvent Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000010828 elution Methods 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/80—Fraction collectors
Definitions
- the present invention relates to a preparative liquid chromatograph that recovers the eluate eluted from the separation column.
- a liquid chromatograph is known as a device for analyzing the components contained in a sample.
- the liquid chromatograph includes a liquid feed pump, a sample injection device, a separation column, a detector, and the like.
- a preparative liquid chromatograph that fractionates an eluate containing a separated component in a separation column and collects the eluate by dividing it into a plurality of collection containers.
- an automatic fractionator for fractionating the eluate is used.
- Patent Document 1 below discloses a preparative liquid chromatograph for collecting a target component.
- a sample injection device is used in the process of injecting a sample into the mobile phase.
- an automatic fractionator is used in the step of fractionating the eluate containing the target component. Therefore, the preparative liquid chromatograph needs to incorporate both a sample injection device and an automatic fractionation device, which increases the number of components of the device and the cost of the device.
- An object of the present invention is to reduce the number of components of the device and reduce the cost of the device in the preparative liquid chromatograph.
- the preparative liquid chromatograph includes a liquid feed pump, a flow path switching valve connected to the liquid feed pump, a separation column connected to the flow path switching valve, and one end connected to the separation column.
- a detector whose other end is connected to the flow path switching valve and a suction / discharge device whose both ends are connected to the flow path switching valve.
- the flow path switching valve has a first switching state in which the suction / discharge device is connected downstream of the liquid feed pump and the flow path is switched so that the separation column is connected downstream of the suction / discharge device, and the liquid feed.
- the present invention in the preparative liquid chromatograph, it is possible to reduce the number of components of the device and reduce the cost of the device.
- FIG. 1 is an overall view of a preparative liquid chromatograph according to the present embodiment.
- FIG. 2 is a diagram showing a suction / discharge device according to the present embodiment.
- FIG. 3 is a diagram showing a preparative liquid chromatograph during the sample injection step.
- FIG. 4 is a diagram showing a suction / discharge device that operates as a sample injection device.
- FIG. 5 is a diagram showing a suction / discharge device that operates as a sample injection device.
- FIG. 6 is a diagram showing a suction / discharge device that operates as a sample injection device.
- FIG. 7 is a diagram showing a preparative liquid chromatograph during the fractionation step.
- FIG. 8 is a diagram showing a suction / discharge device that operates as an automatic fractionation device.
- FIG. 9 is a diagram showing a suction / discharge device that operates as an automatic fractionation device.
- FIG. 1 is a diagram showing the configuration of the preparative liquid chromatograph 10 according to the embodiment of the present invention.
- the preparative liquid chromatograph 10 includes a first solvent supply unit 1A, a second solvent supply unit 1B, a mixing unit 2, a suction / discharge device 3, a separation column 4, and the like. It includes a detector 5 and a high-pressure flow path switching valve 6.
- the first solvent supply unit 1A includes a first solvent container 11A and a first liquid feed pump 12A.
- the second solvent supply unit 1B includes a second solvent container 11B and a second liquid feed pump 12B.
- the high-pressure flow path switching valve 6 is an example of the flow path switching valve according to the present invention.
- the first solvent container 11A stores an aqueous solvent or an organic solvent used as a mobile phase.
- the first liquid feed pump 12A pumps the solvent stored in the first solvent container 11A into the flow path.
- the second solvent container 11B stores an aqueous solvent or an organic solvent used as a mobile phase.
- the second liquid feed pump 12B pumps the solvent stored in the second solvent container 11B into the flow path.
- the mixing unit 2 is connected to the downstream of the first liquid feeding pump 12A and the second liquid feeding pump 12B.
- the mixing unit 2 produces various solvents (mobile phases) by mixing the solvent pumped by the first liquid feed pump 12A and the solvent pumped by the second liquid feed pump 12B at an arbitrary ratio.
- the flow path L1 is connected to the downstream of the mixing unit 2.
- a high-pressure flow path switching valve 6 is connected downstream of the flow path L1.
- the flow path L1 is connected to the first port P1 of the high pressure flow path switching valve 6.
- the high-pressure flow path switching valve 6 is a 6-port 2-position valve.
- the high-pressure flow path switching valve 6 is the first switching in which the first port P1 and the second port P2 are connected, the third port P3 and the fourth port P4 are connected, and the fifth port P5 and the sixth port P6 are connected. It is possible to switch between the state and the second switching state in which the first port P1 and the sixth port P6 are connected, the second port P2 and the third port P3 are connected, and the fourth port P4 and the fifth port P5 are connected. Is.
- FIG. 1 shows a second switching state.
- the flow path L2 is connected to the second port P2 of the high-pressure flow path switching valve 6.
- a suction / discharge device 3 is connected to the downstream end of the flow path L2. The configuration of the suction / discharge device 3 will be described in detail later.
- a flow path L5 is connected to the downstream side of the suction / discharge device 3.
- the fifth port P5 of the high-pressure flow path switching valve 6 is connected to the downstream end of the flow path L5.
- the flow path L6 is connected to the sixth port P6 of the high-pressure flow path switching valve 6.
- a separation column 4 is connected to the downstream end of the flow path L6.
- a sample is supplied to the separation column 4 together with the mobile phase.
- the separation column 4 the target component contained in the sample is separated.
- the separation column 4 is housed in a column oven (not shown). The separation column 4 is maintained at the temperature set in the analytical method by the column oven.
- the detector 5 is connected to the downstream side of the separation column 4 via a flow path.
- the detector 5 detects the sample whose components have been separated in the separation column 4.
- an ultraviolet-visible spectrophotometer, a diode array detector, a differential refractive index detector, or the like is used as the detector 5.
- the flow path L3 is connected to the downstream side of the detector 5.
- the third port P3 of the high-pressure flow path switching valve 6 is connected to the downstream end of the flow path L3. Further, a drain port D is connected to the fourth port P4 of the high pressure flow path switching valve 6.
- FIG. 2 is a diagram showing the configuration of the suction / discharge device 3.
- the suction / discharge device 3 includes a high-pressure flow path switching valve 31, a needle 32, an injection port 33, and a measuring pump 34.
- the suction / discharge device 3 in the present embodiment operates as a sample injection device in the sample injection step, and operates as an automatic fractionation device in the fractionation step.
- the high pressure flow path switching valve 31 is a 6-port 2-position valve.
- the high-pressure flow path switching valve 31 has a first switching state in which the first port S1 and the second port S2 are connected and the fifth port S5 and the sixth port S6 are connected, and the first port S1 and the sixth port S6. It is possible to switch between the second switching state in which the fourth port S4 and the fifth port S5 are connected and connected.
- FIG. 2 shows the second switching state.
- the flow path M1 is connected to the first port S1.
- a needle 32 is connected to the downstream end of the flow path M1.
- a flow path M2 is connected to the second port S2.
- a measuring pump 34 is connected to the other end of the flow path M2.
- a flow path M4 is connected to the fourth port S4.
- An injection port 33 is connected to the upstream end of the flow path M4.
- the flow path L5 is connected to the fifth port S5 of the high-pressure flow path switching valve 31.
- the other end of the flow path L5 is connected to the fifth port P5 of the high-pressure flow path switching valve 6.
- the flow path L2 is connected to the sixth port S6 of the high-pressure flow path switching valve 31.
- the other end of the flow path L2 is connected to the second port P2 of the high pressure flow path switching valve 6 as shown in FIG.
- FIGS. 3 to 9 are views of a state in which the preparative liquid chromatograph 10 is executing the sample injection step.
- 7 to 9 are views in a state where the preparative liquid chromatograph 10 is executing the fractionation step.
- the sample injection step will be described separately in three steps, J1 step to J3 step.
- the suction / discharge device 3 operates as a sample injection device (autosampler).
- the first liquid feed pump 12A is driven, and the mobile phase stored in the first solvent container 11A is pressure-fed to the flow path.
- the second liquid feed pump 12B is driven, and the mobile phase stored in the second solvent container 11B is pressure-fed to the flow path.
- the mobile phase pumped by the first liquid feed pump 12A and the second liquid feed pump 12B is mixed in the mixing unit 2 at a set mixing ratio.
- the mobile phase mixed in the mixing unit 2 flows into the high-pressure flow path switching valve 6 through the flow path L1.
- the high-pressure flow path switching valve 6 is connected to the first port P1 and the second port P2, the third port P3 and the fourth port P4, and the fifth port in the sample injection step. It is in the first switching state in which P5 and the sixth port P6 are connected.
- the mobile phase that has flowed into the first port P1 flows into the flow path L2 via the second port P2.
- FIG. 4 is a diagram showing a suction / discharge device 3 in the J1 step of the sample injection step.
- the high-pressure flow path switching valve 31 is in the first switching state in which the first port S1 and the second port S2 are connected and the fifth port S5 and the sixth port S6 are connected. There is.
- the needle 32 is moved into the sample container 35.
- the measuring pump 34 is driven, and the sample in the sample container 35 is sucked from the tip of the needle 32.
- the sucked sample is held in the flow path M1.
- a sample loop is provided in the flow path M1, and the sucked sample is held by the conduit and the sample loop of the flow path M1.
- a portion painted in black in the flow path M1 indicates a state in which the sample is held.
- the mobile phase flowing through the flow path L2 flows into the flow path L5 via the sixth port S6 and the fifth port S5.
- the mobile phase flowing through the flow path L5 flows into the flow path L3 via the separation column 4 and the detector 5.
- the mobile phase flowing through the flow path L3 is further discharged from the drain port D via the third port P3 and the fourth port P4.
- the high pressure flow path switching valve 31 is in the first switching state. Further, in the J2 step, the needle 32 moves into the injection port 33. At this time, the sample is held in the flow path M1. In FIG. 5, the portion painted in black in the flow path M1 indicates a state in which the sample is held. Also in the J2 step, the mobile phase flowing through the flow path L2 and the flow path L5 is discharged from the drain port D via the separation column 4 and the detector 5.
- the high-pressure flow path switching valve 31 is connected to the first port S1 and the sixth port S6, and the fourth port S4 and the fifth port S5 are connected to the second switching valve 31. It is in a state.
- the high-pressure flow path switching valve 31 is switched to the second switching state, so that the flow path M1 holding the sample is incorporated into the analysis flow path leading to the separation column 4.
- the suction / discharge device 3 of the present embodiment operates as a full-volume injection type sample injection device.
- the portion painted in black in the flow path M4 indicates a state in which the sample is introduced into the analysis flow path.
- the mobile phase into which the sample is injected flows into the flow path L5 via the fourth port S4 and the fifth port S5.
- the sample and mobile phase flowing through the flow path L5 flow into the flow path L6 via the fifth port P5 and the sixth port P6 of the high-pressure flow path switching valve 6.
- the portions painted in black in the flow paths L5 and L6 indicate a state in which the sample is introduced into the analysis flow path in the J3 step.
- the sample and mobile phase flowing through the flow path L6 are supplied to the separation column 4 as shown in FIG. While passing through the separation column 4, the components contained in the sample are separated.
- the component-separated sample is supplied to the detector 5 as an eluate together with the mobile phase.
- the detector 5 detects the components contained in the sample.
- the eluate (mobile phase and component-separated sample) flowing out of the detector 5 is discharged from the drain port D via the flow path L3, the third port P3, and the fourth port P4.
- the sample injection step J1 step to J3 step
- the suction / discharge device 3 operates as an automatic fractionation device.
- the high-pressure flow path switching valve 6 is connected to the first port P1 and the sixth port P6, the second port P2 and the third port P3, and the fourth port in the fractionation step. It is in the second switching state in which P4 and the fifth port P5 are connected. For example, when the sample injection by the suction / discharge device 3 in the sample injection step is completed, the high-pressure flow path switching valve 6 is switched from the first switching state to the second switching state.
- the eluate (mobile phase and component-separated sample) eluted from the separation column 4 flows into the flow path L2 via the detector 5, the flow path L3, the third port P3, and the second port P2.
- the portions painted in black in the flow paths L3 and L2 indicate the eluate eluted from the separation column 4 in the F1 step.
- FIG. 8 is a diagram showing a suction / discharge device 3 in the F1 step of the fractionation step.
- the high-pressure flow path switching valve 31 is in the first switching state in which the first port S1 and the second port S2 are connected and the fifth port S5 and the sixth port S6 are connected.
- the needle 32 is moved into the collection container 36.
- the eluate (mobile phase and component-separated sample) flowing through the flow path L2 flows into the flow path L5 via the sixth port S6 and the fifth port S5.
- the eluate flowing through the flow path L5 is discharged from the drain port D via the fifth port P5 and the fourth port P4.
- the high-pressure flow path switching valve 31 is connected to the first port S1 and the sixth port S6, and the fourth port S4 and the fifth port S5 are connected to the second switching valve 31. It is in a state.
- the eluate flowing through the flow path L3 is a suction / discharge device 3 that operates as an automatic fractionation device via the third port P3, the second port P2, and the flow path L2. Is supplied to.
- the eluate supplied through the flow path L2 is collected in the collection container 36 via the sixth port S6, the first port S1 and the flow path M1.
- the eluate (mobile phase and component-separated sample) eluted from the separation column 4 is recovered in the recovery container 36.
- the portion painted in black in the flow path M1 indicates the eluate flowing toward the collection container 36.
- the suction / discharge device 3 can be operated as a sample injection device or an automatic fractionation device.
- the preparative liquid chromatograph 10 of the present embodiment can reduce the number of components of the apparatus and can reduce the cost of the apparatus.
- the high-pressure flow path switching valve 6 is switched to the first switching state to execute the sample injection step, and when the high-pressure flow path switching valve 6 is switched to the second switching state to execute the fractionation step.
- the flow path L2 is on the upstream side and the flow path L5 is on the downstream side with respect to the suction / discharge device 3.
- one suction / discharge device 3 can be operated as a sample injection device or an automatic fractionation device.
- the suction / discharge device 3 of the present embodiment operates as a full-volume injection type sample injection device. That is, the needle 32 is incorporated in the analysis flow path. As a result, in the fractionation step, the needle 32 can be used to directly discharge the sample into a vial with a septum.
- sample injection devices have a cooling function for stable storage of samples.
- the suction / discharge device 3 operates as an automatic fractionation device
- the cooling function provided in the sample injection device can be used.
- the eluate collected by the automatic fractionator can be stably stored using the cooling function.
- the sample injection device and the automatic fractionation device are separate devices, the eluate collected by the automatic fractionation device cannot be re-fractionated.
- the suction / discharge device 3 since the suction / discharge device 3 operates as a sample injection device and an automatic fractionation device, the recovered eluate can be injected into the analysis flow path, and a new analysis method can be used. It will be possible to provide.
- the suction / discharge device 3 may operate as a manual fractionation device.
- the needle 32 is moved into the collection container 36 by the operation of the operator. The operator may replace the collection container 36 according to the elution timing of each separated component.
- the preparative liquid chromatograph 10 includes the mixing unit 2.
- the preparative liquid chromatograph 10 can perform gradient analysis and the like.
- the preparative liquid chromatograph 10 may be configured to include only one solvent supply unit and not the mixing unit 2.
- the preparative liquid chromatograph is Liquid feed pump and A flow path switching valve connected to the liquid feed pump and A separation column connected to the flow path switching valve and A detector with one end connected to the separation column and the other end connected to the flow path switching valve. It is equipped with a suction / discharge device whose both ends are connected to the flow path switching valve.
- the flow path switching valve is the first switching in which the flow path is switched so that the suction / discharge device is connected downstream of the liquid feed pump and the separation column is connected downstream of the suction / discharge device.
- the suction / discharge device operates as a sample injection device
- the suction / discharge device operates as a fractionation device
- the sample injection step is executed by the suction / discharge device that operates as the sample injection device in the first switching state, and the flow path switching valve is switched to the second switching state after the sample injection step.
- the painting process may be performed.
- the suction / discharge device can be operated as a sample injection device and a fractionation device.
- the suction / discharge device is Includes needles, which suck or discharge samples, When the suction / discharge device operates as the sample injection device, the needle sucks the sample from the sample container, and when the suction / discharge device operates as the fractionator, the needle flows out from the separation column. The eluate may be discharged into a collection container.
- a drain port may be connected downstream of the detector via the flow path switching valve.
- the eluate flowing out of the separation column can be discharged from the drain port.
- the suction / discharge device may operate as a full-volume injection type sample injection device.
- the sample can be used effectively.
- a drain port may be connected to the downstream of the suction / discharge device via the flow path switching valve.
- the eluate flowing out of the separation column can be discharged from the drain port.
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Abstract
Description
図1は、本発明の実施の形態に係る分取液体クロマトグラフ10の構成を示す図である。図1に示すように、本実施の形態においては、分取液体クロマトグラフ10は、第1溶媒供給部1A、第2溶媒供給部1B、混合部2、吸引・吐出装置3、分離カラム4、検出器5および高圧流路切換バルブ6を備える。第1溶媒供給部1Aは、第1溶媒容器11Aおよび第1送液ポンプ12Aを備える。第2溶媒供給部1Bは、第2溶媒容器11Bおよび第2送液ポンプ12Bを備える。高圧流路切換バルブ6が本発明に係る流路切換バルブの例である。
次に、図2を参照しながら、吸引・吐出装置3の構成について説明する。図2は、吸引・吐出装置3の構成を示す図である。吸引・吐出装置3は、高圧流路切換バルブ31、ニードル32、注入ポート33および計量ポンプ34を備える。本実施の形態における吸引・吐出装置3は、試料注入工程においては試料注入装置として動作し、分画工程においては、自動分画装置として動作する。
次に、図3~図9を参照しながら、分取液体クロマトグラフ10の動作について説明する。図3~図6は、分取液体クロマトグラフ10が試料注入工程を実行している状態の図である。図7~図9は、分取液体クロマトグラフ10が分画工程を実行している状態の図である。
試料注入工程について、J1工程~J3工程の3つの工程に分けて説明する。分取液体クロマトグラフ10が試料注入工程を実行するとき、吸引・吐出装置3は、試料注入装置(オートサンプラ)として動作する。図3に示すように、まず、J1工程に先立って、第1送液ポンプ12Aが駆動し、第1溶媒容器11Aに貯留されている移動相が流路に圧送される。また、第2送液ポンプ12Bが駆動し、第2溶媒容器11Bに貯留されている移動相が流路に圧送される。
分画工程について、F1工程~F2工程の2つの工程に分けて説明する。分取液体クロマトグラフ10が分画工程を実行するとき、吸引・吐出装置3は、自動分画装置として動作する。高圧流路切換バルブ6は、図7に示すように、分画工程においては、第1ポートP1および第6ポートP6が接続され、第2ポートP2および第3ポートP3が接続され、第4ポートP4および第5ポートP5が接続される第2切換状態となっている。例えば、試料注入工程における吸引・吐出装置3によるサンプルの注入が完了した時点で、高圧流路切換バルブ6が第1切換状態から第2切換状態に切り替えられる。これにより、分離カラム4から溶出した溶出液(移動相および成分分離されたサンプル)は、検出器5、流路L3、第3ポートP3、第2ポートP2を介して流路L2に流入する。図7において、流路L3,L2において黒色で塗られた部分は、F1工程において分離カラム4から溶出した溶出液を示す。
上記の実施の形態において、分画工程においては、吸引・吐出装置3が、自動分画装置として動作する場合を例に説明した。他の実施の形態として、吸引・吐出装置3は、手動の分画装置として動作してもよい。この場合、オペレータの操作によって、ニードル32が、回収容器36内へ移動する。オペレータは、分離された成分ごとの溶出タイミングに合わせて回収容器36の交換を行えばよい。
上述した複数の例示的な実施の形態は、以下の態様の具体例であることが当業者により理解される。
本発明の一態様に係る分取液体クロマトグラフは、
送液ポンプと、
前記送液ポンプに接続される流路切替バルブと、
前記流路切替バルブに接続される分離カラムと、
一端が前記分離カラムに接続されるとともに、他端が前記流路切替バルブに接続される検出器と、
両端が前記流路切替バルブに接続される吸引・吐出装置と、を備え、
前記流路切替バルブは、前記送液ポンプの下流に前記吸引・吐出装置が接続されるとともに、前記吸引・吐出装置の下流に前記分離カラムが接続されるように流路が切り替えられる第1切替状態と、前記送液ポンプの下流に前記分離カラムが接続されるとともに、前記検出器の下流に前記吸引・吐出装置が接続されるように流路が切り替えられる第2切替状態とを切り替え可能であり、前記第1切替状態において、前記吸引・吐出装置は試料注入装置として動作し、前記第2切替状態において、前記吸引・吐出装置は分画装置として動作する。
第1項に記載の分取液体クロマトグラフにおいて、
前記第1切替状態において前記試料注入装置として動作する前記吸引・吐出装置によって試料注入工程が実行され、前記試料注入工程の後、前記流路切替バルブが前記第2切替状態に切り替えられることにより分画工程が実行されてもよい。
第1項または第2項に記載の分取液体クロマトグラフにおいて、
前記吸引・吐出装置は、
サンプルを吸引または吐出するニードル、を含み、
前記吸引・吐出装置が前記試料注入装置として動作するとき、前記ニードルはサンプル容器から前記サンプルを吸引し、前記吸引・吐出装置が前記分画装置として動作するとき、前記ニードルは前記分離カラムから流れ出る溶出液を回収容器に吐出してもよい。
第1項~第3項のいずれか一項に記載の分取液体クロマトグラフにおいて、
前記第1切替状態において、前記検出器の下流には前記流路切替バルブを介してドレインポートが接続されてもよい。
第4項に記載の分取液体クロマトグラフにおいて、
前記吸引・吐出装置が全量注入方式の試料注入装置として動作してもよい。
第1項~第3項のいずれか一項に記載の分取液体クロマトグラフにおいて、
前記第2切替状態において、前記吸引・吐出装置の下流には前記流路切替バルブを介してドレインポートが接続されてもよい。
Claims (6)
- 送液ポンプと、
前記送液ポンプに接続される流路切替バルブと、
前記流路切替バルブに接続される分離カラムと、
一端が前記分離カラムに接続されるとともに、他端が前記流路切替バルブに接続される検出器と、
両端が前記流路切替バルブに接続される吸引・吐出装置と、
を備え、
前記流路切替バルブは、前記送液ポンプの下流に前記吸引・吐出装置が接続されるとともに、前記吸引・吐出装置の下流に前記分離カラムが接続されるように流路が切り替えられる第1切替状態と、前記送液ポンプの下流に前記分離カラムが接続されるとともに、前記検出器の下流に前記吸引・吐出装置が接続されるように流路が切り替えられる第2切替状態とを切り替え可能であり、前記第1切替状態において、前記吸引・吐出装置は試料注入装置として動作し、前記第2切替状態において、前記吸引・吐出装置は分画装置として動作する、分取液体クロマトグラフ。 - 前記第1切替状態において前記試料注入装置として動作する前記吸引・吐出装置によって試料注入工程が実行され、前記試料注入工程の後、前記流路切替バルブが前記第2切替状態に切り替えられることにより分画工程が実行される、請求項1に記載の分取液体クロマトグラフ。
- 前記吸引・吐出装置は、
サンプルを吸引または吐出するニードル、
を含み、
前記吸引・吐出装置が前記試料注入装置として動作するとき、前記ニードルはサンプル容器から前記サンプルを吸引し、前記吸引・吐出装置が前記分画装置として動作するとき、前記ニードルは前記分離カラムから流れ出る溶出液を回収容器に吐出する、請求項1または請求項2に記載の分取液体クロマトグラフ。 - 前記第1切替状態において、前記検出器の下流には前記流路切替バルブを介してドレインポートが接続される、請求項1~請求項3のいずれか一項に記載の分取液体クロマトグラフ。
- 前記吸引・吐出装置が全量注入方式の試料注入装置として動作する、請求項4に記載の分取液体クロマトグラフ。
- 前記第2切替状態において、前記吸引・吐出装置の下流には前記流路切替バルブを介してドレインポートが接続される、請求項1~請求項3のいずれか一項に記載の分取液体クロマトグラフ。
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10332660A (ja) * | 1998-06-04 | 1998-12-18 | Hitachi Ltd | 液体クロマトグラフおよびそれを用いる方法 |
JP2005172829A (ja) * | 2003-12-09 | 2005-06-30 | Agilent Technol Inc | 移動相の再循環機能を有するクロマトグラフシステム |
JP2005265805A (ja) * | 2004-03-22 | 2005-09-29 | Shimadzu Corp | オートサンプラ |
JP2008539398A (ja) * | 2005-12-01 | 2008-11-13 | ディオネクス ゾフトロン ゲーエムベーハー | 特に高速液体クロマトグラフィー用の試料ディスペンサー |
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Patent Citations (4)
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JPH10332660A (ja) * | 1998-06-04 | 1998-12-18 | Hitachi Ltd | 液体クロマトグラフおよびそれを用いる方法 |
JP2005172829A (ja) * | 2003-12-09 | 2005-06-30 | Agilent Technol Inc | 移動相の再循環機能を有するクロマトグラフシステム |
JP2005265805A (ja) * | 2004-03-22 | 2005-09-29 | Shimadzu Corp | オートサンプラ |
JP2008539398A (ja) * | 2005-12-01 | 2008-11-13 | ディオネクス ゾフトロン ゲーエムベーハー | 特に高速液体クロマトグラフィー用の試料ディスペンサー |
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