WO2013011818A1 - 液体クロマトグラフ用制御装置及びプログラム - Google Patents
液体クロマトグラフ用制御装置及びプログラム Download PDFInfo
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- WO2013011818A1 WO2013011818A1 PCT/JP2012/066583 JP2012066583W WO2013011818A1 WO 2013011818 A1 WO2013011818 A1 WO 2013011818A1 JP 2012066583 W JP2012066583 W JP 2012066583W WO 2013011818 A1 WO2013011818 A1 WO 2013011818A1
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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
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/34—Control of physical parameters of the fluid carrier of fluid composition, e.g. gradient
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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
- G01N30/466—Flow patterns using more than one column with separation columns in parallel
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- the present invention relates to a control device for controlling the operation of a liquid chromatograph, and a program used in the control device.
- the liquid chromatograph is composed of a plurality of units such as an autosampler, a pump, and a column oven, and the operation of each unit is controlled according to a control signal from the control device.
- FIG. 7 is an example of a schedule table in the liquid chromatograph analysis.
- one row corresponds to one analysis, and the sample name, sample injection amount, method file name, and analysis result are stored as information necessary for executing the analysis in one row. Describes the data file name and so on.
- a method file is a file that defines the operating conditions (hereinafter referred to as “analysis method”) of each unit constituting the liquid chromatograph.
- the method file includes the mobile phase used during analysis, the type of column, and the analysis time.
- Various parameters such as pump flow rate and column oven temperature are described.
- an analysis under various conditions may be performed on one sample to search for an optimal analysis condition for the sample.
- This is called method scouting.
- the user creates a plurality of types of method files in which the various parameters described above are combined in advance, and specifies a different method file in each row of the schedule table as shown in FIG.
- the start of analysis is instructed with the same sample injection amount.
- the chromatogram data as the analysis result is stored in one data file for each analysis and stored in a storage device such as a hard disk drive.
- the user refers to the chromatogram data stored in the storage device, and determines the analysis condition when the optimum analysis result is obtained as an analysis method to be applied to the analysis of the sample.
- a gradient liquid feeding method as one of analysis methods of liquid chromatograph. This is to mix a plurality of solvents with different properties, such as water and organic solvent, and send the mobile phase liquid whose mixing ratio has changed over time to the column. It is particularly useful for good separation of
- the user When performing sample analysis by the gradient liquid feeding method (hereinafter referred to as “gradient analysis”), the user sets a gradient profile as shown in FIG. 6 as one of analysis parameters included in the method file.
- the gradient profile indicates the target value of the mobile phase composition with the passage of time from the start of analysis.
- the example in FIG. 6 is a gradient analysis profile using a mixed solution of solvent A and solvent B as a mobile phase, and the mobile phase composition is represented by the ratio of solvent B in the mixed solution.
- solvent A a solvent with weak solubility (for example, a solvent with high polarity in the reverse phase mode) is used
- solvent B a solvent with strong solubility (for example, in the reverse phase mode, polarity). Low solvent).
- the ratio of the solvent B is kept low, whereby each component in the sample is temporarily put into the column. Adsorbed. Thereafter, the ratio of the solvent B increases in proportion to the passage of time (time t1 to t2), whereby the respective components are sequentially eluted from the column according to their characteristics (for example, polarity). Subsequently, after the component remaining in the column was discharged from the column while maintaining a high ratio of the solvent B over a certain time (time t2 to t3), it was returned to the initial mobile phase composition again. The state is further maintained for a certain time (time t3 to t4), and the inside of the column is equilibrated.
- the process corresponding to the time t0 to t1 is referred to as a sample introduction process
- the process corresponding to the time t1 to t2 is equivalent to the gradient process
- the process corresponding to the time t2 to t3 is equivalent to the cleaning process
- the time t3 to t4 The process is called an equilibration process.
- the above-described sample introduction step is omitted, and the gradient step is started simultaneously with the sample injection.
- the present invention has been made in order to solve the above-mentioned problems, and a first object is to save labor for setting a gradient profile by a user when performing gradient analysis using various gradient profiles.
- An object of the present invention is to provide a control apparatus for a liquid chromatograph capable of performing the above.
- the second object is to provide a liquid chromatograph control device that allows a user to easily determine under what conditions each data file is an analysis result even when a large number of data files are generated. Is to provide.
- a liquid chromatograph control device has a gradient analysis function for performing chromatographic analysis while temporally changing the mixing ratio of a plurality of solvents constituting a mobile phase.
- a liquid chromatograph control device for controlling the operation of the liquid chromatograph, a) Mixing ratio input means for allowing the user to input a mixing ratio at the start and end of the step of continuously changing the mixing ratio of the solvent; b) a change input means for allowing the user to input the number of changes and the amount of change per time at least one of the mixture ratios at the start time and the end time; c) Means for creating a gradient profile representing the target value of the solvent mixture ratio at each time during one gradient analysis, the start based on the contents input by the mixture ratio input means and the change input means Gradient profile creation means for creating a combination of values that can be taken as the mixture ratio at the time point and the mixture ratio at the end time point, and creating a plurality of types of gradient profiles corresponding to each combination; d)
- the step of continuously changing the solvent mixing ratio corresponds to the above-described gradient step.
- the liquid chromatograph control device comprises: e) analysis result storage means for storing the results of the gradient analysis according to the plurality of types of gradient profiles in one data file for each analysis; f) The name of the column used for each gradient analysis, the name of the solvent, the mixing ratio at the start time, and the file name including at least one of the mixing ratio at the end time are stored as a result of the analysis.
- a data file name automatic assigning means for assigning to a data file It is desirable to have.
- the control apparatus for a liquid chromatograph having the above-described configuration, when a plurality of gradient analyzes using various gradient profiles are continuously performed, the gradient profile to be applied to each analysis as in the past is used. Since it is not necessary for the user to input and set one by one, the setting work by the user can be saved.
- FIG. 1 is a schematic configuration diagram of a liquid chromatograph provided with a control device according to the present embodiment.
- This liquid chromatograph is obtained by the detection unit 40 through the liquid feeding unit 10, the autosampler 20, the column oven 30, the detection unit 40, the system controller 50 that controls these units, and the system controller 50.
- a control device 60 that analyzes and processes data, an operation unit 71 including a keyboard and a mouse connected to the control device 60, a display unit 72 including a display, and the like are provided.
- Feeding unit 10 is for delivering a solvent A which is sucked by the liquid feed pump P A, and a solvent B which has been sucked by the liquid feed pump P B to the column on which is mixed by a gradient mixer 17, further
- the solvent pumps P A and P B are connected to four solvent containers via solvent switching valves 15 and 16 and degassing units 13 and 14, respectively.
- the liquid feed pump P A connected to the solvent container 11a ⁇ 11d are accommodated eg aqueous solvents (i.e., solvents mainly composed of water), by switching the solvent selection valve 15, the four one of the solvents container 11a ⁇ 11d is a solvent in the selected container is sucked by the liquid feed pump P a as the solvent a.
- the solvent containers 12a to 12d connected to the liquid feed pump P B contain, for example, an organic solvent (that is, a solvent containing an organic solvent as a main component).
- an organic solvent that is, a solvent containing an organic solvent as a main component.
- One of the containers 12a to 12d is selected, and the solvent in the container is sucked as the solvent B by the liquid feed pump PB.
- These liquid feed pump P A, the flow rate of P B is can be controlled to vary respectively with time, whereby the solvent A, feeding the gradient method mixing ratio of B is changed temporally It can be performed.
- the column oven 30 includes six columns 32a to 32f and flow path switching units 31 and 33 for selectively connecting any one of these columns to the mobile phase flow path.
- the detector 40 is provided with a detector 41 such as a PDA detector.
- the control device 60 includes a storage unit 61, an analysis condition setting unit 62, a schedule table creation unit 63, an analysis control unit 64, and a data processing unit 65 as functional blocks.
- the substance of the control device 60 is a personal computer, and various functions as described below are achieved by executing dedicated control / processing software installed in the personal computer.
- the analysis control unit 64 corresponds to the control unit in the present invention
- the analysis condition setting unit 62 corresponds to the gradient profile creation unit in the present invention.
- the analysis condition setting unit 62 and the operation unit 71 cooperate to function as a mixture ratio input unit and a change input unit in the present invention.
- the data processing unit 65 corresponds to the analysis result storage means and the data file name automatic assignment means in the present invention.
- a standard analysis operation in one gradient analysis using the above liquid chromatograph is as follows. That is, under the control of the system controller 50 receives an instruction from the analysis control unit 64 of the control device 60, the solvent selector valve 15, 16 selects one solvent container, respectively, the liquid feed pump P A, the P B wherein The solvent is sucked from the solvent container at a predetermined flow rate. The solvent is sucked by the aspirated solvent A and the liquid feed pump P B in the liquid feed pump P A B is homogeneously mixed with a gradient mixer 17, the mobile phase after mixing, to the column via the autosampler 20 Inflow.
- a rack in which one or more sample bottles (vials) are mounted is set in the autosampler 20, and a predetermined sample is selected and collected under the control of the system controller 50.
- the sample is injected into the mobile phase. This sample rides on the mobile phase and is introduced into one of the columns 32a to 32f.
- the liquid feed pump P is set so that the ratio of the solvent B is low and the ratio of the solvent A is high until a predetermined time elapses after the sample is injected.
- the flow rates of A and P B are controlled (time t0 to t1: sample introduction step).
- As the solvent A a solvent having a weak dissolution power is used, so that each component in the sample is once adsorbed on the column.
- the ratio of the solvent B is increased by changing the flow rates of the liquid feed pumps P A and P B over time (time t1 to t2: gradient process).
- the solvent B a solvent having a strong dissolution power is used, so that each component adsorbed on the column is sequentially eluted from the column according to its polarity and introduced into the detection unit 40.
- each component is sequentially detected by a detector 41 provided in the detection unit 40, and data obtained by digitizing a detection signal corresponding to the concentration is sent to the control device 60 via the system controller 50.
- the control device 60 stores the received data in a storage unit 61 provided on a storage device such as a hard disk, and creates a chromatogram by performing predetermined processing in the data processing unit 65 and displays it on the screen of the display unit 72. To do. Thereafter, the column is washed by feeding solvent B at a high concentration for a certain time (time t2 to t3: washing step), and returned to the initial mobile phase composition to equilibrate the column for a certain time (time t3 to t4). : Equilibration step).
- FIG. 2 is a flowchart showing a processing procedure when creating a method file and a schedule table
- FIGS. 3 and 4 are diagrams showing examples of screen display of the display unit 72.
- FIG. 5 shows an example of a schedule table in the present embodiment.
- the user operates the operation unit 71 to input to the analysis condition setting unit 62 that method scouting is performed by gradient analysis.
- the mobile phase / column selection screen 100 as shown in FIG. 3 is displayed on the screen of the display unit 72, so that the type of solvent used as the solvent A by the user on the screen 100 is used as the solvent B.
- the kind of solvent and the kind of column are each selected (step S11).
- the analysis condition setting unit 62 displays a basic setting screen (not shown) on the screen of the display unit 72.
- the user sets the name of the sample to be analyzed, the injection amount, and the basic pattern of the gradient profile (hereinafter referred to as “basic profile”) (step S12).
- the basic profile is a gradient profile that is the basis of a plurality of gradient analyzes executed by the method scouting, and the user performs the sample introduction process, the gradient process, the cleaning process, and the like on the basic setting screen.
- the basic profile is set by inputting the execution time of the equilibration process, the composition of the mobile phase at the start of the gradient process, the composition of the mobile phase at the end of the gradient process, and the composition of the mobile phase in the washing process.
- the composition of the mobile phase can be specified by, for example, the ratio of the solvent B in the mixed mobile phase liquid (that is, solvent A + solvent B).
- the ratio of solvent B at the start of the gradient process is referred to as “initial concentration of solvent B”
- the ratio of solvent B at the end of the gradient process is referred to as “final concentration of solvent B”.
- the initial concentration of solvent B and the final concentration of solvent B correspond to the mixing ratio at the start point and the mixing ratio at the end point in the present invention, respectively.
- the analysis condition setting unit 62 subsequently displays a gradient detailed setting screen 200 as shown in FIG.
- the user sets a gradient profile to be applied to a plurality of gradient analyzes executed in the method scouting.
- the user can set the solvent B from the basic profile. It is set how many steps the initial concentration and the final concentration are changed, and how much the concentration of the solvent B is changed for each step of the change (step S13).
- the user first checks the check box 201 “change the final concentration stepwise” displayed on the upper left side of the gradient detail setting screen 200.
- a graph representing an example of a gradient profile is displayed below the check box 201, and the direction in which the final concentration is changed is indicated by a downward arrow on the graph.
- the horizontal axis of the graph shows the execution time of each process in the basic profile set on the basic setting screen, and the vertical axis of the graph shows the initial concentration of solvent B and the end of solvent B in the basic profile.
- the concentration and the concentration of the solvent B in the cleaning process are displayed.
- the user sets how many steps the final concentration of the solvent B is changed by inputting numerical values in the two input fields 202 and 203 provided below the graph while referring to the graph. To do. In the example of FIG. 4, it is set to change in “2” steps by ⁇ 20.0%.
- the user checks the check box 204 “change the initial density stepwise” displayed in the upper center of the gradient detail setting screen 200.
- a graph showing an example of a gradient profile is displayed below the check box 204, and the direction in which the initial density is changed is indicated by an upward arrow on the graph.
- the contents displayed on the vertical and horizontal axes of the graph are the same as those of the graph described above.
- the user sets how many steps the initial concentration of the solvent B is changed by entering numerical values in the two input fields 205 and 206 provided below the graph while referring to the graph. . In the example of FIG. 4, setting is made so as to be changed in increments of “1” by + “10.0”%.
- a table 207 showing the initial concentration and the final concentration of the solvent B in each of the multiple times of the gradient analysis is generated.
- the final concentration in the basic profile is 95%.
- the final concentration is set to be changed in two steps by -20.0%. Are 95%, 75% and 55%.
- the initial density in the basic profile is 5%, and in the input fields 205 and 206, the initial density is set to change in one step by + 10.0%. %. Accordingly, there are six combinations of these initial concentrations and final concentrations of 3 types ⁇ 2 types, and a table 207 showing these 6 types of combinations is displayed on the gradient detail setting screen 200.
- a table showing combinations of a plurality of types of initial concentrations obtained from the input contents and final concentrations in the basic profile is displayed on the gradient detail setting screen 200.
- the check box 204 is not checked, or when the value in the input field 205 or the input field 206 is 0, it is determined that the initial density step change is not performed, and the input fields 202 and 203 are determined.
- a table showing combinations of a plurality of types of final concentrations obtained from the input contents and initial concentrations in the basic profile is displayed on the gradient detail setting screen 200.
- the initial density step change and the final concentration step are performed. It is determined that no change is made, and a table showing only combinations of the initial density in the basic profile and the final density in the basic profile is displayed on the gradient detail setting screen 200.
- the analysis condition setting unit 62 generates a plurality of gradient profiles to be applied to a plurality of gradient analyzes executed by the method scouting (step S14).
- the represented graph 211 is displayed in the lower part of the gradient detail setting screen 200.
- Each row of the table 207 is provided with a check box 208 for selecting whether or not to display the graph 211, and only the gradient profile relating to the checked row is displayed as the graph 211. For example, in the example of FIG. 4, only the gradient profile relating to the three types of combinations described in the upper three rows among the six types of combinations shown in the table 207 is displayed as the graph 211.
- the analysis condition setting unit 62 creates a plurality of method files based on the contents set above (step S15).
- one gradient profile generated in step S14 is described in each method file, and other parameters such as the types of solvents A and B input in step S11 and the column type are described as other parameters. Is done.
- a plurality of method files having different gradient profiles and the same other parameters are generated, and each method file is stored in the storage unit 61.
- the schedule table creation unit 63 generates a schedule table as shown in FIG. 5 (step S16).
- one line corresponds to one gradient analysis, and information necessary to execute the analysis in one line includes sample name, sample injection amount, method file name, data file name, etc. Is described.
- the values set in step S12 are automatically entered in the sample name and injection volume fields of each row of the schedule table, and any of the plurality of method files created in step S15 is entered in the method file name field. One of them is automatically entered.
- the analysis with the same gradient profile is executed twice in succession, and the data in the second analysis is adopted as the analysis result by the gradient profile.
- the first is called “empty analysis” and the second is called “actual analysis”. Therefore, in FIG. 5, the analysis using the same method file is continuously registered every two lines, the first line is the empty analysis, and the second line is the actual analysis. In addition, since it is not necessary to introduce the sample in the empty analysis, the sample name and the sample injection amount are not described in the line corresponding to the empty analysis.
- each line of the schedule table describes the data file name when saving the analysis result.
- a serial number or the like is described as a data file name.
- a file name representing an analysis condition as shown in FIG. 5 is automatically described.
- the data file name is (prefix) _ (column name) _ (solvent A name) _ (solvent B name) _ (composition ratio of solvent B at the start of the gradient process) _ (Composition ratio of solvent B at the end of the gradient step).
- the prefix is common to each line, and an arbitrary character string set in advance by the user is input.
- an appropriate character string is input based on the description of the method file described in the line.
- the chromatogram data obtained as a result of each analysis is stored in one data file for each analysis, and each data file is given the data file name described in the corresponding row of the schedule table.
- the control apparatus for a liquid chromatograph According to the present embodiment, even when the gradient profile is variously changed and the gradient analysis is performed a plurality of times, the gradient of each of the plurality of analyzes is performed as in the related art. There is no need to enter a profile. Therefore, the user's setting work in method scouting can be saved. In addition, since the character string that represents the analysis conditions is automatically assigned as the file name of the data file that stores the analysis results, the user can open the file under which conditions the analysis results are for each data file. Can be easily discriminated.
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Abstract
Description
a)前記溶媒の混合比を連続的に変化させる工程の開始時点の混合比と終了時点の混合比とをユーザに入力させる混合比入力手段と、
b)前記開始時点及び終了時点の少なくともいずれかの混合比の変更回数と1回あたりの変更量をユーザに入力させる変更入力手段と、
c)1回のグラジエント分析中の各時刻における前記溶媒の混合比の目標値を表したグラジエントプロファイルを作成する手段であって、前記混合比入力手段及び変更入力手段による入力内容に基づいて前記開始時点の混合比と終了時点の混合比として取り得る値の組合せを生成し、各組合せに対応した複数種類のグラジエントプロファイルを作成するグラジエントプロファイル作成手段と、
d)前記複数種類のグラジエントプロファイルに従ったグラジエント分析を順次実行するように前記液体クロマトグラフを制御する制御手段と、
を有することを特徴としている。
e)前記複数種類のグラジエントプロファイルに従ったグラジエント分析の結果を各分析毎にそれぞれ1つのデータファイルに格納する分析結果格納手段と、
f)各グラジエント分析に使用されたカラムの名称、溶媒の名称、前記開始時点の混合比、及び前記終了時点の混合比の少なくともいずれかを含んだファイル名を、その分析の結果が格納されるデータファイルに付与するデータファイル名自動付与手段と、
を有するものとすることが望ましい。
11a~11d、12a~12d…溶媒容器
PA、PB…送液ポンプ
15、16…溶媒切替バルブ
17…グラジエントミキサー
20…オートサンプラ
30…カラムオーブン
32a~32f…カラム
40…検出部
41…検出器
50…システムコントローラ
60…制御装置
61…記憶部
62…分析条件設定部
63…スケジュールテーブル作成部
64…分析制御部
65…データ処理部
71…操作部
72…表示部
200…グラジエント詳細設定画面
Claims (3)
- 移動相を構成する複数の溶媒の混合比を時間的に変化させつつクロマトグラフ分析を行うグラジエント分析機能を備えた液体クロマトグラフの動作を制御する液体クロマトグラフ用制御装置であって、
a)前記溶媒の混合比を連続的に変化させる工程の開始時点の混合比と終了時点の混合比とをユーザに入力させる混合比入力手段と、
b)前記開始時点及び終了時点の少なくともいずれかの混合比の変更回数と1回あたりの変更量をユーザに入力させる変更入力手段と、
c)1回のグラジエント分析中の各時刻における前記溶媒の混合比の目標値を表したグラジエントプロファイルを作成する手段であって、前記混合比入力手段及び変更入力手段による入力内容に基づいて前記開始時点の混合比と終了時点の混合比として取り得る値の組合せを生成し、各組合せに対応した複数種類のグラジエントプロファイルを作成するグラジエントプロファイル作成手段と、
d)前記複数種類のグラジエントプロファイルに従ったグラジエント分析を順次実行するように前記液体クロマトグラフを制御する制御手段と、
を有することを特徴とする液体クロマトグラフ用制御装置。 - e)前記複数種類のグラジエントプロファイルに従ったグラジエント分析の結果を各分析毎にそれぞれ1つのデータファイルに格納する分析結果格納手段と、
f)各グラジエント分析に使用されたカラムの名称、溶媒の名称、前記開始時点の混合比、及び前記終了時点の混合比の少なくともいずれかを含んだファイル名を、その分析の結果が格納されるデータファイルに付与するデータファイル名自動付与手段と、
を更に有す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用制御装置。 - コンピュータを、請求項1に記載の混合比入力手段、変更入力手段、グラジエントプロファイル作成手段、及び制御手段として機能させることを特徴とするプログラム。
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CN104280496A (zh) * | 2013-07-12 | 2015-01-14 | 株式会社岛津制作所 | 液相色谱仪用控制系统和控制方法 |
WO2015063886A1 (ja) * | 2013-10-30 | 2015-05-07 | 株式会社島津製作所 | 液体クロマトグラフ装置 |
CN104730180A (zh) * | 2013-12-18 | 2015-06-24 | 北京普源精电科技有限公司 | 一种具有混合比例修正功能的液相色谱仪 |
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JP2015166724A (ja) * | 2014-03-04 | 2015-09-24 | 株式会社島津製作所 | 液体クロマトグラフ制御装置及び液体クロマトグラフ制御方法 |
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Also Published As
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US20140157878A1 (en) | 2014-06-12 |
JPWO2013011818A1 (ja) | 2015-02-23 |
CN103703364B (zh) | 2015-05-20 |
US9546987B2 (en) | 2017-01-17 |
CN103703364A (zh) | 2014-04-02 |
JP5637313B2 (ja) | 2014-12-10 |
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