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Control device for liquid chromatograph

A technology of liquid chromatograph and control equipment, applied in the field of control equipment

Active Publication Date: 2014-12-03
SHIMADZU SEISAKUSHO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Occasionally, sample introduction processing may be omitted, and gradient processing may start simultaneously with sample injection

Method used

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  • Control device for liquid chromatograph
  • Control device for liquid chromatograph
  • Control device for liquid chromatograph

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0079] will refer to Figure 1 to Figure 6 A control device for a liquid chromatograph according to a first embodiment of the present invention is described. According to the current embodiment, figure 1 It is a schematic configuration diagram of a liquid chromatograph with a control device.

[0080] This liquid chromatograph includes: a liquid supply part 10; an autosampler 20; a column thermostat 30; a detection unit 40; a system controller 50 for controlling each of these units; A controller 60 that manages analysis operations and for the detector to analyze and process data obtained by the detector 40; an operation unit 71 composed of a keyboard and a mouse connected to the controller 60; a display unit composed of a display; and other units .

[0081] The liquid supply part 10 is mixed by the pump P A The solvent A is pumped out and passed through the pump P B The extracted solvent B is then supplied to the column tube with the mixed solvent. Four solvent container...

no. 2 approach

[0102] will refer to figure 2 and Figure 7 to Figure 14 A control device of a liquid chromatograph according to a second embodiment of the present invention is described.

[0103] The control device of this embodiment has the same figure 1 The liquid chromatograph shown has the same structure with this control device. The description of the structure is therefore omitted. In this embodiment, the schedule generating section 63 and the analysis controller 64 cooperate, and serve as the analysis controller and the preliminary liquid supply controller in the second aspect of the present invention described above. The data processor 65 corresponds to the analysis result storage unit and the automatic data file naming unit in the second aspect of the present invention described above.

[0104] Standard analysis operations (i.e., operations in sample introduction processing, gradient processing, washing processing, and equilibration processing) in the single gradient analysis ...

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Abstract

The present invention aims at reducing the time required for a series of analyses in the sequential performance of gradient analyses under a variety of conditions. To this end, in a control apparatus for controlling the operation of a liquid chromatograph having a gradient analysis function in which a mobile phase composed of a plurality of mixed solvents is used and a chromatograph analysis is performed while the mixture ratio of the solvents is temporally changed, the liquid chromatograph is controlled so as to continuously change the mixture ratio of the solvents from an initial mixture ratio to a final mixture ratio when performing a sample analysis; and as to perform, before the sample analysis, a preparatory liquid supply in which the mixture ratio of the solvents is continuously changed from the initial mixture ratio to the final mixture ratio at a rate higher than that in the sample analysis.

Description

technical field [0001] The invention relates to a control device for controlling the operation of a liquid chromatograph. Background technique [0002] A liquid chromatograph consists of multiple units such as an autosampler, pump, and column oven. The operation of each unit is controlled by control signals from a control device. [0003] In recent years, in such liquid chromatographs, a personal computer to which a control / output program has been installed has been widely used as a control device in order to comprehensively control an analysis unit and process collected data. In such a control device, a schedule is generated before starting analysis so that a plurality of samples can be continuously analyzed, or other types of analysis can be automatically performed (for example, see JP-A 2005-127814). [0004] Figure 15 An example of a schedule showing an analysis by a liquid chromatograph. In this graph, each row corresponds to an analysis. One line contains the info...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/62
CPCG01N30/34G01N30/8651B01D15/203G01N30/8693G01N30/8696G01N2030/8804
Inventor 大桥浩志山口忠行寺田英敏
Owner SHIMADZU SEISAKUSHO CO LTD