JPH01187451A - Data processor for chromatograph - Google Patents

Abstract

PURPOSE:To easily retrieve and extract data similar to desired characteristics by setting reference retrieval conditions such as the retention time, permissible width, etc., of a chromatograph. CONSTITUTION:Chromatograph files to be retrieved, e.g. CHRMTCO 0 ...CHRMTCO 49 are set 8 first. Then the retention time and permissible width as retrieval references are set. Further, conditions such as peak height and area are set when necessary and a variable N is set to +1. At the start of the retrieval, N=0, so the variable N corresponding to a retrieval object data number is set to 1 first. When the conditions are satisfied, the chromatograph file is displayed 6. When not, it is decided whether or not N=n. Here, (n) is the number of data to be retrieved and, for example, when n=50, the decision result is NO until the end of the inspection, but when N=n(50), a check on the object of retrieval is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The second invention relates to a chromatographic data processing device, and particularly to a chromatographic data processing device that facilitates data retrieval.

(B) Conventional technology In general, a chromatographic data processing device has a storage means (file) that stores data such as retention time, peak height, area, etc. of already analyzed chromatograms for each chromatogram. If necessary, take out the desired chromatograph 1 and data from this storage means, and
It is displayed on a display means such as an RT display.

Conventionally, in order to search for chromatograms in this type of data processing device, the user has previously given each chromatogram data a specific file name (for example, the same file name with a number extension "'CHRMT, OO1"). ”〜“C
RT? MT, 100'', etc.) and search by specifying and inputting the required file name.

(c) Problems to be Solved by the Invention In a data processing device that employs the conventional search technology described above, when storing a chromatogram, an easy-to-understand chromatogram file name is used so that the user can understand the characteristics to some extent from the file name in advance. It is necessary to define, classify and memorize. If the file name is difficult to understand, it is difficult to extract the desired characteristics from the file name, so it is necessary to prepare a special correspondence table between file names and chromatograms. This poses a problem in that the search process is time-consuming.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a chromatographic data processing device that can easily search for and extract properties similar to desired characteristics.

(d) Means and operation for solving the problems The chromatographic data processing device of the present invention receives a chromatogram signal from a chromatograph, converts it into digital data using an A/D converter, captures it, and converts it into a predetermined data. In those that perform analytical processing,
a data storage means for storing analysis data such as peak height and area for each chromatogram; a search condition setting means for setting search criteria such as retention time and allowable width of the chromatogram; and the data storage. The apparatus is characterized in that it includes means for extracting chromatogram data matching the search conditions from the data of the means, and display means for displaying the extracted chromatogram data.

In this data processing device, with the chromatogram data stored in the storage means, the search condition setting means sets search reference conditions, such as retention time and its allowable range. Then, a search is started, and data that matches the search reference conditions, for example, data whose tensiding time is within an allowable range, is extracted from the data in the storage means. Then, the extracted chromatographic data is displayed on the display means.

(e) Examples The present invention will be explained in more detail with reference to Examples below.

FIG. 2 is a block diagram of a chromatographic data processing device in which the present invention is implemented. In the figure, a chromatogram signal is manually input from a chromatograph 1 such as a gas chromatograph or a liquid chromatograph, and an A/
The analog signal is converted into a digital value by the D converter 2 at a predetermined sampling period, and then taken into the CPU 3. The captured chromatogram data is displayed two-dimensionally on a CRT display 6, and is recorded on a plotter 7 in time sequence. Further, the data is stored in time sequence by the floppy disk drive 9. In the figure, a ROM 4 stores programs for the CPU 3, and a RAM 5 stores search conditions such as retention time and tolerance. Further, the retention time, peak height, area, etc. of the peak at the time of detecting the peak surface of each chromatogram are stored in the floppy disk drive 9 for each chromatogram. An example of the stored data is shown in FIG. In Figure 3, CHRM
TCOOl..., CHRMT49 is the chromatogram, CHRMTDOOl..., CHRMTD49 is the data such as lytin time, peak height, area, etc. corresponding to each chromatogram.The keyboard 8 specifies the analysis mode and search mode. It also has keys for setting search conditions such as search time, allowable width, peak height, and area.

Next, the search operation of the data processing apparatus of this embodiment will be explained with reference to the flowchart shown in FIG.

When the search mode is set using the keyboard 8, the operation starts, and first, a chromatogram file to be searched is set (step 5TI).

For example, if the search target is CHRMTCOOL shown in Figure 3.
..., 50 CHRMTC49. Next, a retention time serving as a search criterion and its allowable range are set (step 5T2). For example, if the search criteria are the chromatogram shown in FIG. 4, retention time t, tolerance width T1, retention time t2, tolerance width T2
is set.

It is determined whether more detailed search criteria are required (step 5T3), and if necessary, conditions such as peak height and area are set (step 5T4), and the process moves to step ST5. If detailed search criteria are not required, skip step ST/I and proceed to step 5.

In step ST5, the variable N is incremented by 1. At the start of the search, N=O, so here, the variable N is first set to 1.
It is said that This variable N corresponds to the data number to be searched. Therefore, CHRMTCO0 is read and it is determined whether it is within the conditions (step 5T6). For example, if the search criteria are retention time and tolerance range, CH
Referring to CHRMTDOO of RMTCOO, it is checked whether the retention time jlNs t2N is within the allowable width T, , T2. If the conditions are met, the chromatogram file is displayed on the CRT display 6 (step 5T7). On the other hand, if the data does not meet the conditions, step ST7 is skipped and the process moves to step ST8. In step ST8, it is determined whether 11 N ==n or not. Here, n is the number of search target data, and in the example, n-
It is 50. Therefore, until the search ends, this determination is No, and the process returns to step ST5, where the variable N is incremented to N=2, and CHRMTCO1 is read out this time, and it is determined whether or not it is within the conditions (step ST 6
), if it is within the conditions, it is displayed on the CRT display 6, and if it is outside the conditions, step ST7 is skipped and the process returns to step ST5 via step ST8. Step ST
In step 5, the variable N is incremented, and the same procedure as above is performed to read out each data, check whether it is within the conditions, and display only the chromatograms that are within the conditions on the CRT display 6.

When N=n(50), all the checks for the search target are completed, the determination in step ST8 becomes YF, S, and the operation ends.

In the above example, the chromatogram to be searched is set by analyzing a standard sample whose content is known in advance, and by analyzing an unknown material and using the result as the search condition. You can easily search to which standard sample an unknown sample is related.

(f) Effects of the Invention According to the present invention, a search condition setting means is provided for setting criteria for searching such as retention time and allowable width of a chromatogram, and thereby it is possible to determine whether or not the set conditions are met. Therefore, it is possible to easily search for chromatogram data with desired conditions without having to make it easy to understand what is being searched or the file name of the chromatogram to be searched.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a flow diagram for explaining the operation of a chromatographic data processing device in which the present invention is implemented, and FIG. 2 is a circuit block diagram of the chromatographic data processing device. , FIG. 3 is a diagram showing an example of data stored in the memory file of the data processing device for chromatography, and FIG. 4 is an example of a chromatogram used to explain the search criteria set in the data processing device. It is a diagram. 1: Chromatograph, 2: △/D converter, 3: CP
U, 5: RAM, 6: CRT display, 7: Plotter, 9
,,,. 8: Keyboard, 9: Floppy disk drive. Patent Applicant Shimajiru Seisakusho Co., Ltd. Agent Patent Attorney Shigeru Nakamura Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] (1) In a chromatographic data processing device that receives a chromatogram signal from a chromatogram, converts it into digital data using an A/D converter, and performs a predetermined analysis process, the retention time of the chromatogram, the peak height,
a data storage means for storing analytical data such as area for each chromatogram; a search condition setting means for setting criteria for searching such as retention time and allowable width of the chromatogram; A chromatographic data processing device comprising: means for extracting chromatogram data that meets the search conditions; and display means for displaying the extracted chromatogram data.