WO2016098169A1 - 液体クロマトグラフ - Google Patents
液体クロマトグラフ Download PDFInfo
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- WO2016098169A1 WO2016098169A1 PCT/JP2014/083178 JP2014083178W WO2016098169A1 WO 2016098169 A1 WO2016098169 A1 WO 2016098169A1 JP 2014083178 W JP2014083178 W JP 2014083178W WO 2016098169 A1 WO2016098169 A1 WO 2016098169A1
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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
- G01N30/06—Preparation
- G01N30/08—Preparation using an enricher
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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
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
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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
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/38—Flow patterns
- G01N30/46—Flow patterns using more than one column
- G01N30/461—Flow patterns using more than one column with serial coupling of separation columns
- G01N30/462—Flow patterns using more than one column with serial coupling of separation columns with different eluents or with eluents in different states
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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
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/38—Flow patterns
- G01N30/46—Flow patterns using more than one column
- G01N30/468—Flow patterns using more than one column involving switching between different column configurations
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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
- G01N2030/022—Column chromatography characterised by the kind of separation mechanism
- G01N2030/027—Liquid chromatography
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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
- G01N30/06—Preparation
- G01N30/08—Preparation using an enricher
- G01N2030/085—Preparation using an enricher using absorbing precolumn
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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
- G01N30/06—Preparation
- G01N30/14—Preparation by elimination of some components
- G01N2030/143—Preparation by elimination of some components selective absorption
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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
- G01N30/06—Preparation
- G01N30/14—Preparation by elimination of some components
Definitions
- the present invention relates to a liquid chromatograph having a concentration extraction column used for pretreatment such as concentration of a target component contained in a sample solution, and an analysis column for separating the target component from other components.
- a high-performance liquid chromatograph HPLC
- HPLC high-performance liquid chromatograph
- LC / MS liquid chromatograph mass spectrometer
- FIG. 1 is a schematic diagram illustrating an example of a configuration of a main part of an LC / MS that includes a sample pretreatment device that is conventionally used.
- a mobile phase supply channel 103 provided with an analysis pump 102 is connected to a port of a 6-port 2-position high pressure switching valve 111, and the mobile phase container is operated by the operation of the analysis pump 102.
- the mobile phase sucked from 101 is supplied to the mobile phase supply channel 103.
- An analysis flow path 104 provided with an analysis column 105 and a mass spectrometer (MS) 106 is connected to the f port of the high-pressure switching valve 111.
- the ports b to g of the 7-port 6-position low-pressure switching valve 115 are connected to the flow path to the sample container 116 filled with the sample (however, the flow paths connected to the ports d to g are omitted here)
- the pretreatment flow path 113 provided with an infusion pump 114 is connected to the common port a, and the other end of the flow path 113 is connected to the port d of the high pressure switching valve 111. .
- a concentration column 112 filled with a collection agent is connected, and a drainage flow path 117 reaching a drainage port is connected to the port c.
- the injection pump 114 is operated with the high-pressure switching valve 111 connected in a dotted line and the low-pressure switching valve 115 connected in a solid line. Then, a liquid sample to be analyzed (for example, a sample derived from a living body or a sample collected from soil) is flowed to the concentration column 112, and the target component in the sample is captured by the collection agent in the concentration column 112.
- a liquid sample to be analyzed for example, a sample derived from a living body or a sample collected from soil
- the high-pressure switching valve 111 is switched to the connection state indicated by the solid line, the concentration column 112 and the analysis flow path 104 are connected, and the analysis pump
- the mobile phase is supplied from the mobile phase supply flow path 103 to the concentration column 112 by 102.
- the target component is eluted from the trapping agent in the concentration column 112, is introduced into the analysis column 105 along the flow of the mobile phase, and is separated in the time direction while passing through the analysis column 105.
- the mass spectrometer 106 sequentially detects the mobile phase containing the components eluted from the analysis column 105 and outputs detection signals corresponding to the respective components.
- a column with a scavenger supported on a polymer is suitable for the concentration column. This is because a column using a polymer has resistance to a wide range of pH solutions, and various solutions can be used as an eluent.
- a column using silicate, which will be described later, cannot use a solution having a pH of 7 or higher, whereas a column using a polymer is included in, for example, the above-described biological samples or samples collected from soil.
- an ammonium hydroxide solution or an ammonium carbonate solution having a high pH can be used.
- a column in which the stationary phase is supported on silicate is suitable for the analytical column. This is because the column using silicate has higher component separation performance than the column using polymer.
- the sample pretreated by the concentration column 112 of the sample pretreatment apparatus is eluted into the mobile phase, and introduced into the analysis column 105 as it is to separate components.
- a solution having a pH of 7 or less must be used as the eluent (also mobile phase).
- a polymer column having inferior component separation characteristics must be used as the analytical column 105.
- the problem to be solved by the present invention is a liquid chromatograph having a concentration column for capturing a target component in a sample and performing a pretreatment such as concentration and an analysis column for separating the target component.
- a liquid chromatograph capable of using a column, an eluate and a transfer liquid suitable for pretreatment and separation of components, respectively.
- the liquid chromatograph according to the present invention which has been made to solve the above problems, a) a concentration column to capture the target component in the liquid sample; b) an analytical column for separating the target component from other components; c) A state in which a flow path for supplying a sample introduction mobile phase containing a liquid sample to the concentration column is formed and a flow for supplying an eluate for eluting the target component captured by the concentration column to the concentration column.
- a second channel switching unit that switches between a state of forming a channel to be fed to the analysis column via the storage unit.
- the target component is pretreated and separated as follows. First, a sample introduction mobile phase containing a liquid sample is fed to a concentration column, and a target component is captured therein. Then, the eluate is supplied to the concentration column using the first flow path switching unit, and the target component is eluted and stored in the first storage unit. During this time, the analytical mobile phase is supplied to the analytical column. Subsequently, the second flow path switching unit is switched, and the eluate containing the target component stored in the first storage unit is placed on the flow of the analysis mobile phase and introduced into the analysis column.
- the flow path for feeding the eluate to the concentration column by the first flow path switching unit, and the flow path for feeding the mobile phase for analysis to the analysis column by the second flow path switching unit. are formed as independent channels. Moreover, the 1st storage part which stores the eluate containing a target component once is provided. Therefore, different solutions can be fed to these flow paths. Further, the analysis mobile phase is not fed to the concentration column, and a large amount of the eluate is not introduced into the analysis column. Therefore, it is possible to use a concentration column and an eluate, an analysis column and a mobile phase suitable for pretreatment and analysis of the target component, respectively.
- the liquid chromatograph according to the present invention further comprises: f) a second reservoir for storing the eluate; g) A state in which a flow path for feeding the eluate to the second reservoir is formed, and a mobile phase for sample introduction is fed to the second reservoir and the eluate stored in the second reservoir is It is preferable to include a third flow path switching unit that switches between a state in which a flow path to be sent to the concentration column is formed.
- the liquid chromatograph including the second storage unit and the third flow path switching unit, first, the minimum amount of eluate necessary for eluting the target component is stored in the second storage unit. Then, the sample introduction mobile phase containing the liquid sample is fed to the concentration column, and the target component is captured therein. Subsequently, the flow path is switched by the second flow path switching unit, and the eluate stored in the second storage unit is sent out by the sample introduction mobile phase (not including the liquid sample) and sent to the concentration column to supply the target component. Elute and store in the first reservoir.
- the target component is eluted in a necessary minimum amount of the eluate, a solution containing the target component at a high concentration can be analyzed.
- liquid chromatograph By using the liquid chromatograph according to the present invention, it is possible to use a concentration column and an eluent, an analysis column and a mobile phase suitable for pretreatment and analysis of the target component, respectively.
- the liquid chromatograph of this embodiment is used for separating and analyzing the target component from other components after subjecting the target component contained in the liquid sample to pretreatment for concentration and washing.
- FIG. 2 is a flow path configuration diagram of the liquid chromatograph of the present embodiment.
- the flow path of the liquid chromatograph of the present embodiment includes a 10-way valve 1 (cooperating with pumps 4 and 6 to be described later to form a first flow path switching unit of the present invention), a first 6-way valve 11 ( Three flow path switching valves, which correspond to the third flow path switching section of the present invention, and a second six-way valve 13 (corresponding to the second flow path switching section of the present invention) are arranged.
- the first six-way valve 11 used for sample introduction and pretreatment is a low-pressure valve
- the second six-way valve 13 used for feeding the mobile phase for analysis is a high-pressure valve.
- the 10-way valve 1 is formed with flow paths that always connect port A and port F, and port B and port H, respectively. Further, the port C of the 10-way valve 1 is connected to the analysis column section 40, the port E is connected to the port J via the sample injection section 2, the port D is connected to the analysis mobile phase supply flow path 27, and the port G is a pretreatment water system. The port K is connected to the solvent supply channel 22 and the pretreatment solvent supply channel 24, respectively.
- Port a of the first six-way valve 11 is port m of the second six-way valve 13
- port b is through the concentration column 30 to port f
- port c is to the pretreatment solvent supply channel 24, Each is connected.
- a second reservoir 12 having a capacity of 50 ⁇ l is provided in the flow path connecting the port d and the port e of the first six-way valve 11.
- the first reservoir 14 having a capacity of 100 ⁇ l is provided in the flow path connecting the port g and the port j of the second 6-way valve 13. Further, the port h of the second six-way valve 13 is connected to the analysis aqueous solvent supply flow path 25, the port i is connected to the analysis mobile phase supply flow path 27, and the port k is connected to the waste liquid flow path 28. .
- a container 3 containing the pretreatment aqueous solvent and a pump 4 for supplying the aqueous solvent in the container 3 to the port G of the 10-way valve 1 are arranged.
- a pump 6 for feeding to the processing mixer 9 is arranged.
- the analysis aqueous solvent supply channel 25 has a container 15 containing the analysis aqueous solvent and a pump 16 for supplying the aqueous solvent in the container 15 to the port h of the second six-way valve 13.
- the analysis organic solvent supply flow path 26 includes a container 7 containing the analysis organic solvent, and an analysis mixer in which the organic solvent in the container 7 is disposed on the analysis mobile phase supply flow path 27.
- a pump 8 for feeding to 10 is arranged.
- the concentration column section 30 includes six types of concentration columns 32 arranged in parallel, and two flow path switching sections 31 and 33 for switching the flow paths connected to these concentration columns 32.
- Each of the six types of concentration columns 32 is a column in which a collecting agent is supported on a polymer, and the diameter and length of the column and the type of the collecting agent are different.
- the analysis column section 40 includes six types of analysis columns 42 arranged in parallel and two flow path switching sections 41 and 43 for switching the flow paths connected to the analysis columns 42.
- Each of the six types of analytical columns 42 is a column in which a stationary phase is supported on a silicate, and the diameter and length of the column and the type of stationary phase are different.
- a detector 50 is disposed on the outlet side of the analysis column unit 40, and components separated in the analysis column 42 (and an analysis mobile phase) are sequentially detected.
- a flow path through which various solvents are fed is indicated by a solid line.
- a pretreatment aqueous solvent is used as the sample introduction mobile phase
- a pretreatment organic solvent is used as the eluent
- a mixed liquid of the pretreatment aqueous solvent and the pretreatment organic solvent is used as the cleaning liquid.
- a mixed liquid of an aqueous solvent for analysis and an organic solvent for analysis is used as the mobile phase for analysis.
- the eluate storage step In the eluate storage step, the eluate is stored in the second storage unit 12 using the flow path indicated by the solid line in FIG. Specifically, the pump 6 is operated to pass the pretreatment organic solvent through the pretreatment organic solvent supply channel 23 and the pretreatment solvent supply channel 24 to the port c of the first six-way valve 11. And 50 ⁇ l of the pretreatment organic solvent (eluent) is stored in the second storage unit 12 disposed between the port d and the port e.
- the pump 16 is operated to analyze the analysis aqueous solvent through the analysis aqueous solvent supply flow path 25 and the ports h and g of the second six-way valve 13, the first reservoir 14, the port j and the port i.
- the pump 8 is operated to feed the organic solvent for analysis to the mixer 10 for analysis. Then, these are mixed by the analysis mixer 10 to create an analysis mobile phase, and the analysis mobile phase is supplied to the analysis column 42 in the analysis column section 40 through the analysis mobile phase supply flow path 27 and the ports D and C of the 10-way valve 1. To send. Note that the analysis mobile phase is supplied to the analysis column 42 through this flow path until the washing step described later.
- sample injection step In the eluate storage step, the target component in the liquid sample is captured in the concentration column 32 using the flow path shown by the solid line in FIG. First, the flow path of the first six-way valve 11 is switched. Then, the pump 4 is operated, and the pretreatment aqueous solvent (sample introduction mobile phase) is supplied to the port G of the 10-way valve 1 through the pretreatment aqueous solvent supply channel 22. A liquid sample is injected from the sample injection unit 2 into the sample introduction mobile phase. As a result, the liquid sample rides on the flow of the sample introduction mobile phase and is introduced into the concentration column 32 through the pretreatment solvent supply channel 24 and the ports c and b of the first six-way valve 11 and is included in the liquid sample. The target component to be collected is trapped in the concentration column 32.
- [Washing step] In the washing step, the target component captured in the concentration column 32 is washed using the pretreatment organic solvent passage 23 in addition to the passage shown by the solid line in FIG.
- the sample injection unit 2 is stopped and the pump 6 is operated to feed the pretreatment organic solvent to the pretreatment mixer 9.
- the pretreatment mixer 9 the pretreatment aqueous solvent and the pretreatment organic solvent are mixed, and the mixed solution (washing solvent) is fed to the concentration column 32 through the same flow path as described above.
- the cleaning solvent removes unnecessary components other than the target component trapped inside the concentration column 32, and the cleaning liquid containing the unnecessary components passes through the first 6-way valve 11 and the second 6-way valve 13 to be a waste liquid. It is discharged into the flow path.
- Target component elution step In the target component elution step, the target component captured in the concentration column 32 is eluted using the flow path shown by the solid line in FIG. 5 and stored in the first storage unit 14. In this step, first, the flow paths of both the first six-way valve 11 and the second six-way valve 13 are switched. By switching the flow path of the first six-way valve 11, the mixed liquid of the pretreatment aqueous solvent and the pretreatment organic solvent is fed to the second reservoir 12. 50 ⁇ l of the pretreatment organic solvent (eluent) stored in the second storage unit 12 is sent out by this mixed solution and introduced into the concentration column 32.
- the target component captured in the concentration column 32 is eluted into the eluate, and is first stored through the port b and port a of the first six-way valve 11 and the port m and port g of the second six-way valve 13. Sent to the unit 14.
- the analytical aqueous solvent introduced into the first reservoir 14 in the previous step is sent out by the eluate containing the target component and discharged to the waste liquid channel 28.
- the analytical aqueous solvent fed from the analytical aqueous solvent supply flow path 25 is fed to the analytical mixer 10 through the port h and port i of the second six-way valve 13, Here, it is mixed with an organic solvent for analysis and fed to the analysis column 42. That is, the analysis mobile phase is sent to the analysis column 42 through a flow path different from that up to the washing step.
- the eluate containing the target component stored in the first storage unit 14 is introduced into the analysis column 42 using the flow path indicated by the solid line in FIG.
- the flow path of the second six-way valve 13 is switched, and the analysis aqueous solvent supplied from the analysis aqueous solvent supply flow path 25 is supplied to the first reservoir 14.
- the eluate containing the target component stored in the first storage unit 14 is sent out by this aqueous solvent and sent to the mixer 10 for analysis.
- the analytical aqueous solvent and the analytical organic solvent are mixed.
- the target component rides on the flow of the analysis mobile phase, is introduced into the analysis column 42 through the port D and the port C of the 10-way valve 1, separated into components, and then detected by the detector 50.
- the flow path of the first six-way valve 11 is switched while the target component is separated and detected as described above, and the pump 4 is operated to concentrate the pretreatment aqueous solvent (sample introduction mobile phase) in the concentration column 32.
- the solvent in the flow path is replaced with a pretreatment aqueous solvent, and preparation for the next analysis is performed.
- the flow path for supplying the eluate (pretreatment organic solvent) to the concentration column 32 and the flow for supplying the analysis mobile phase to the analysis column 42 is formed as an independent channel, and the analysis mobile phase is not fed to the concentration column 32 at a high pressure, and a large amount of eluate is not fed to the analysis column 42.
- the eluate containing the target component eluted from the concentration column 32 is temporarily stored in the first storage unit 14. Therefore, columns suitable for pretreatment such as concentration and washing of the target component and separation / analysis of the target component can be used, and a solution optimal for each purpose can be used.
- the target component can be introduced into the analysis column 42 without pretreatment (that is, without capturing the target component in the concentration column 32).
- the flow path is switched by the 10-way valve 1 and the liquid sample is injected from the sample injection unit 2 so that the liquid sample is put on the flow of the analysis mobile phase supplied from the analysis mixer 10. It can be introduced into the analytical column 42.
- a flow path suitable for both an analysis requiring pretreatment such as concentration and washing of the target component and an analysis not requiring pretreatment can be formed.
- the pretreatment aqueous solvent is used as the sample introduction mobile phase
- the pretreatment organic solvent is used as the eluent
- the mixed solution thereof is used as the cleaning liquid.
- a mixed solution of organic solvents was used, but these can be appropriately changed according to the target component.
- the pretreatment mixer 9 is arranged between the port K of the 10-way valve 1 and the port c of the first 6-way valve 11, and the ports i and 10 of the second 6-way valve 13 are arranged.
- the analysis mixer 10 is disposed between the valves D, the mixer may be disposed at a location other than these as long as a required mixed solution can be produced.
- the mixer in consideration of accurately controlling the mixing ratio of the solvents, it is preferable to arrange the mixer at a position as close as possible to the target column as in the above embodiment. Furthermore, in the said Example, although the capacity
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Abstract
Description
一方、溶出液(兼移動相)としてpHが7以上の溶液を用いるためには、分析カラム105として成分分離特性が劣るポリマーのカラムを用いなければならない。
a) 液体試料中の目的成分を捕捉するための濃縮カラムと、
b) 前記目的成分を他の成分から分離するための分析カラムと、
c) 液体試料を含む試料導入用移動相を前記濃縮カラムに送給する流路を形成する状態と、前記濃縮カラムに捕捉された目的成分を溶出させる溶出液を該濃縮カラムに送給する流路を形成する状態と、を切り替える第1流路切替部と、
d) 前記目的成分を含む溶出液を貯留するための第1貯留部と、
e) 分析用移動相を前記分析カラムに送給する流路及び前記濃縮カラムからの溶出液を前記第1貯留部に送給する流路を形成する状態と、分析用移動相を前記第1貯留部を経由して前記分析カラムに送給する流路を形成する状態と、を切り替える第2流路切替部と
を備えることを特徴とする。
まず、液体試料を含む試料導入用移動相を濃縮カラムに送給し、その内部に目的成分を捕捉する。そして、第1流路切替部を用いて濃縮カラムに溶出液を送給し、目的成分を溶出させて第1貯留部に貯留する。この間、分析カラムには分析用移動相を送給しておく。続いて、第2流路切替部を切り替え、第1貯留部に貯留された目的成分を含む溶出液を分析用移動相の流れに乗せて分析カラムに導入する。
f) 溶出液を貯留するための第2貯留部と、
g) 溶出液を前記第2貯留部に送給する流路を形成する状態と、試料導入用移動相を前記第2貯留部に送給し該第2貯留部に貯留された溶出液を前記濃縮カラムに送出する流路を形成する状態と、を切り替える第3流路切替部と
を備えることが好ましい。
前処理用有機系溶媒供給流路23には、前処理用有機系溶媒が収容された容器5と、該容器5内の有機系溶媒を前処理用溶媒供給流路24上に配置された前処理用ミキサー9に送給するためのポンプ6が配置されている。
分析用水系溶媒供給流路25には、分析用水系溶媒が収容された容器15と、該容器15内の水系溶媒を第2の6方バルブ13のポートhに送給するためのポンプ16が配置されている。
分析用有機系溶媒供給流路26には、分析用有機系溶媒が収容された容器7と、該容器7内の有機系溶媒を分析用移動相供給流路27上に配置された分析用ミキサー10に送給するためのポンプ8が配置されている。
分析カラム部40も同様に、並列に配置された6種類の分析カラム42と、これらの分析カラム42につながる流路を切り替えるための2つの流路切替部41、43を備えている。6種類の分析カラム42はいずれも固定相をケイ酸塩に担持したカラムであり、カラムの径や長さ、固定相の種類がそれぞれ異なる。
また、分析カラム部40の出口側には検出器50が配置され、分析カラム42において分離された成分(及び分析用移動相)が順次検出される。
溶出液収容ステップでは、図3に実線で示す流路を使用して第2貯留部12に溶出液を貯留する。
具体的には、ポンプ6を動作させて、前処理用有機系溶媒供給流路23及び前処理用溶媒供給流路24を通じて、前処理用有機系溶媒を第1の6方バルブ11のポートcに送給し、ポートdとポートeの間に配置された第2貯留部12に50μlの前処理用有機系溶媒(溶出液)を貯留する。
溶出液収容ステップでは、図4に実線で示す流路を使用して液体試料中の目的成分を濃縮カラム32内に捕捉する。
まず、第1の6方バルブ11の流路を切り替える。そして、ポンプ4を動作させ、前処理用水系溶媒供給流路22を通じて前処理用水系溶媒(試料導入用移動相)を10方バルブ1のポートGに送給する。また、試料注入部2から試料導入用移動相に液体試料を注入する。これにより、液体試料は試料導入用移動相の流れに乗って前処理用溶媒供給流路24及び第1の6方バルブ11のポートc、ポートbを通じて濃縮カラム32に導入され、液体試料に含まれる目的成分が濃縮カラム32内に捕捉される。
洗浄ステップでは、図4に実線で示す流路に加えて前処理用有機系溶媒流路23を使用して濃縮カラム32内に捕捉した目的成分を洗浄する。
このステップでは、試料注入部2を停止するとともに、ポンプ6を動作させて前処理用有機系溶媒を前処理用ミキサー9に送給する。前処理用ミキサー9では前処理用水系溶媒と前処理用有機系溶媒が混合され、その混合液(洗浄溶媒)が上記同様の流路で濃縮カラム32に送給される。この洗浄溶媒により、濃縮カラム32の内部に捕捉された目的成分以外の不要な成分が除去され、不要成分を含む洗浄液が第1の6方バルブ11及び第2の6方バルブ13を通って廃液流路に排出される。
目的成分溶出ステップでは、図5に実線で示す流路を使用して濃縮カラム32内に捕捉された目的成分を溶出させて第1貯留部14に貯留する。
このステップでは、まず第1の6方バルブ11及び第2の6方バルブ13の両方の流路を切り替える。第1の6方バルブ11の流路を切り替えたことにより、前処理用水系溶媒と前処理用有機系溶媒の混合液は第2貯留部12に送給される。第2貯留部12内に貯留された50μlの前処理用有機系溶媒(溶出液)はこの混合液により送り出されて濃縮カラム32に導入される。濃縮カラム32内に捕捉された目的成分は、この溶出液に溶出し、第1の6方バルブ11のポートb、ポートa、第2の6方バルブ13のポートm、ポートgを通じて第1貯留部14に送られる。先のステップで第1貯留部14に導入されていた分析用水系溶媒は目的成分を含む溶出液により送り出され、廃液流路28に排出される。
分析ステップでは、図6に実線で示す流路を使用して、第1貯留部14に貯留された目的成分を含む溶出液を分析カラム42に導入する。
このステップでは、第2の6方バルブ13の流路を切り替え、分析用水系溶媒供給流路25から供給される分析用水系溶媒を第1貯留部14に送給する。第1貯留部14内に貯留された目的成分を含む溶出液はこの水系溶媒により送出され、分析用ミキサー10に送られる。また、ここで分析用水系溶媒と分析用有機系溶媒とが混合される。そして、目的成分は分析用移動相の流れに乗って、10方バルブ1のポートD及びポートCを通って分析カラム42に導入され、成分分離された後、検出器50で検出される。
上記実施例では、試料導入用移動相として前処理用水系溶媒を、溶出液として前処理用有機系溶媒を、洗浄液としてそれらの混合液を用い、分析用移動相として分析用水系溶媒と分析用有機系溶媒の混合液を用いたが、これらは目的成分に応じて適宜に変更することができる。
また、上記実施例では、10方バルブ1のポートKと第1の6方バルブ11のポートcの間に前処理用ミキサー9を配置し、第2の6方バルブ13のポートiと10方バルブDの間に分析用ミキサー10を配置したが、所要の混合液を作製可能な位置であればこれら以外の場所にミキサーを配置してもよい。ただし、溶媒の混合比を正確に制御することを考慮すると、上記実施例のように目的のカラムにできるだけ近い位置にミキサーを配置することが好ましい。
さらに、上記実施例では、第1貯留部14の容量を100μl、第2貯留部12の容量を50μlとしたが、これらの容量は目的成分の量等に応じて適宜に変更すればよい。ただし、目的成分が溶出した溶出液を確実に分析に供するためには、第1貯留部14の容量を第2貯留部12の容量よりも多くする(例えば上記実施例のように2倍の容量とする)ことが好ましい。
2…試料注入部
9…前処理用ミキサー
10…分析用ミキサー
11、13…6方バルブ
12…第2貯留部
14…第1貯留部
22…前処理用水系溶媒供給流路
23…前処理用有機系溶媒供給流路
24…前処理用溶媒供給流路
25…分析用水系溶媒供給流路
26…分析用有機系溶媒供給流路
27…分析用移動相供給流路
28…廃液流路
30…濃縮カラム部
31…流路切替バルブ
32…濃縮カラム
40…分析カラム部
41…流路切替バルブ
42…分析カラム
50…検出器
Claims (4)
- a) 液体試料中の目的成分を捕捉するための濃縮カラムと、
b) 前記目的成分を他の成分から分離するための分析カラムと、
c) 液体試料を含む試料導入用移動相を前記濃縮カラムに送給する流路を形成する状態と、前記濃縮カラムに捕捉された目的成分を溶出させる溶出液を該濃縮カラムに送給する流路を形成する状態と、を切り替える第1流路切替部と、
d) 前記目的成分を含む溶出液を貯留するための第1貯留部と、
e) 分析用移動相を前記分析カラムに送給する流路及び前記濃縮カラムからの溶出液を前記第1貯留部に送給する流路を形成する状態と、分析用移動相を前記第1貯留部を経由して前記分析カラムに送給する流路を形成する状態と、を切り替える第2流路切替部と
を備えることを特徴とする液体クロマトグラフ。 - f) 溶出液を貯留するための第2貯留部と、
g) 溶出液を前記第2貯留部に送給する流路を形成する状態と、試料導入用移動相を前記第2貯留部に送給し該第2貯留部に貯留された溶出液を前記濃縮カラムに送出する流路を形成する状態と、を切り替える第3流路切替部と
を備えることを特徴とする請求項1に記載の液体クロマトグラフ。 - 前記第1貯留部の容量が前記第2貯留部の容量よりも大きいことを特徴とする請求項2に記載の液体クロマトグラフ。
- 前記濃縮カラムを経由せずに液体試料を含む分析用移動相を前記分析カラムに導入可能であることを特徴とする請求項1から3のいずれかに記載の液体クロマトグラフ。
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| US15/536,273 US20170343519A1 (en) | 2014-12-15 | 2014-12-15 | Liquid chromatograph |
| JP2016564481A JP6260719B2 (ja) | 2014-12-15 | 2014-12-15 | 液体クロマトグラフ |
| EP14908379.2A EP3236256A4 (en) | 2014-12-15 | 2014-12-15 | Liquid chromatograph |
| PCT/JP2014/083178 WO2016098169A1 (ja) | 2014-12-15 | 2014-12-15 | 液体クロマトグラフ |
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/JP2014/083178 WO2016098169A1 (ja) | 2014-12-15 | 2014-12-15 | 液体クロマトグラフ |
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| US (1) | US20170343519A1 (ja) |
| EP (1) | EP3236256A4 (ja) |
| JP (1) | JP6260719B2 (ja) |
| WO (1) | WO2016098169A1 (ja) |
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| US11709154B2 (en) * | 2019-10-17 | 2023-07-25 | Aisti Science Co., Ltd. | Liquid chromatograph including passage switch valve |
| GB2591435B (en) * | 2019-10-31 | 2024-04-03 | Agilent Technologies Inc | Sample injection in a combined chromatography system |
| DE102020124644A1 (de) | 2020-09-22 | 2022-03-24 | Dionex Softron Gmbh | Chromatografieverfahren, -system und -verwendung |
| BE1030295B1 (fr) * | 2022-02-24 | 2023-09-18 | Out And Out Chemistry | Cartouche de pré-purification d'un échantillon de composés radiomarqués en vue de sa purification par chromatographie à haute pression, dispositif de pré-purification et d'injection et procédé de pré-purification et d'injection |
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| JP2001141709A (ja) * | 1999-11-17 | 2001-05-25 | Nikkiso Co Ltd | イオンクロマトグラフ |
| JP2003014717A (ja) * | 2001-07-03 | 2003-01-15 | Yokogawa Electric Corp | イオン分析装置 |
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| US5026482A (en) * | 1989-09-26 | 1991-06-25 | Air Products And Chemicals, Inc. | Separation of liquid mixtures by concentration swing adsorption |
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| JP3868899B2 (ja) * | 2002-12-25 | 2007-01-17 | 株式会社島津製作所 | 液体クロマトグラフ |
| EP1666878A4 (en) * | 2003-09-05 | 2009-12-23 | Sumitomo Chemical Co | LIQUID CHROMATOGRAPHY DEVICE |
| JP4093201B2 (ja) * | 2004-03-30 | 2008-06-04 | 株式会社島津製作所 | 液体クロマトグラフ |
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- 2014-12-15 JP JP2016564481A patent/JP6260719B2/ja active Active
- 2014-12-15 WO PCT/JP2014/083178 patent/WO2016098169A1/ja not_active Ceased
- 2014-12-15 US US15/536,273 patent/US20170343519A1/en not_active Abandoned
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| US5462660A (en) * | 1994-04-22 | 1995-10-31 | The United States Of America As Represented By The Secretary Of Agriculture | High performance liquid chromatography injection system for the simultaneous concentration and analysis of trace components |
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| EP3236256A4 (en) | 2017-11-29 |
| EP3236256A1 (en) | 2017-10-25 |
| US20170343519A1 (en) | 2017-11-30 |
| JPWO2016098169A1 (ja) | 2017-04-27 |
| JP6260719B2 (ja) | 2018-01-17 |
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