Method and apparatus for chromatographic data processing, and chromatograph
AssigneeHitachi, Ltd.
InventorsMasahito Ito, Kisaburo Deguchi
Life of this patent
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Abstract
A chromatographic analyzer is provided for facilitating curve fitting by means of the linear least-square method for a chromatogram that contains a plurality of overlapping peaks. A chromatographic data processor executes fitting processing to each peak in an arbitrary time region having the plurality of peaks of the chromatogram starting from the front side or back of the time region, and the processed peaks are subtracted from the chromatogram in the time region so that the plurality of peaks in the chromatogram can be separated from one another.
Claims10
A chromatographic data processor for executing data processing of a chromatogram obtained by separating a sample to be measured using a column and detecting the separated sample, wherein,
- fitting processing is executed to each peak in an arbitrary time region having the plurality of peaks of said chromatogram starting from a front side of the time region or from a back side of the time region, and the processed peaks are subtracted from said time region of said chromatogram so that the plurality of peaks in said chromatogram can be separated from one another.
A data processing method of a chromatogram obtained by separating a sample to be measured using a column and detecting the separated sample, the method comprising the steps of:
- specifying an arbitrary region having the plurality of peaks of said chromatogram;
- executing fitting processing to each of said plurality of peaks in said specified region from a front side end or from a back side end;
- and
- subtracting the processed peaks from said arbitrary region of said chromatogram.
A chromatographic analyzer comprising a sample separating means for separating a sample to be measured into components a detecting means for detecting said separated sample by said sample separating means;
- a data processing means for executing data processing by obtaining the detected result of said detecting means;
- and a display means for displaying the data processing result, wherein
- said data processing means comprises:
- means for specifying an arbitrary retention time region having peaks of at least three components of a chromatogram obtained as the detected result of said detecting means;
- means for specifying whether fitting processing is executed from a front side end or a back side end of said specified retention time region;
- and
- means for specifying a weighting function and a waveform function used in said fitting processing,
- wherein the peaks at which the fitting processing is completed are subtracted from the chromatogram in said arbitrary retention time region, and a fitting processing result for each of the peaks is displayed on said display means;
- and
- wherein the specification of said arbitrary retention time region, the specification of said direction of the fitting processing and the specification of said weighting function are performed using dialogue boxes displayed on said display means.
Dependencies are inferred from the claim text.