Spectrum peak endpoint adjustment method and chromatographic workstation with spectrum peak endpoint adjustment function
An adjustment method and workstation technology, applied in the field of chromatography, which can solve the problems of inaccurate determination of peak end points and poor symmetry.
Active Publication Date: 2020-03-31
达耐科学有限公司
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Problems solved by technology
This method solves the technical problem of inaccurate determination of the end point of the spectrum peak by only using the slope threshold judgment method in the prior art to identify the end point of the spectrum peak, especially for some peaks with poor symmetry, the effect is more obvious
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[0038] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0039] refer to image 3 , shows a method flowchart of an embodiment of a method for adjusting the end point of a spectral peak in the present invention, including the following steps:
[0040] Step S301, determining the middle point of the spectral peak;
[0041] In this step, the method of judging the slope threshold in the prior art is firstly used to find out the middle point of the spectral peak. In this embodiment, the middle point of the spectrum peak is selected as the apex of the spectrum peak.
[0042] As another example, the middle point of the spectral peak may also be the right inflection point of the spectral peak or any point between the apex of the spectral peak and the right inflection point of the spectral peak as the middle point.
[0043] As another example, the determination of the middle point of...
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The invention discloses a method for regulating the end-point of a chromatographic peak and a chromatographic work station with the function of regulating the end-point of a chromatographic peak. The method comprises the following steps: determining an intermediate point of a chromatographic peak; detecting the reversal of slope; searching the first data set in which the absolute value of mean slope of data points is less than a preset slop threshold value if no reversal is found, and selecting an arbitrary data point in the first data set as a first data point; further searching continuous N data sets after the first data set, judging whether the absolute value of the mean slope of the continuous N data sets is less than the preset slope threshold value or not, and determining all data points in the continuous N data sets do not have slope reversals; setting the last data set in the continuous N data sets as a second data set, taking the last data point in the second data set as a second data point, and selecting the data point with the lowest amplitude between the first data point and the second data point as the end-point of the chromatographic peak. By adopting the method, continuous searching of N data sets is limited, and the problem that the determined end-point of the chromatographic peak is offset backward can be solved.
Description
technical field [0001] The invention relates to the technical field of chromatography, in particular to a method for adjusting the end point of a spectrum peak and a chromatography workstation with the function of adjusting the end point of a spectrum peak. Background technique [0002] At present, all chromatographic devices in the industry are equipped with chromatographic workstations. The chromatographic workstation is equivalent to a host computer. On the one hand, it completes the control of the lower computer (that is, the chromatographic device), and on the other hand, it analyzes and processes the chromatographic data collected by the lower computer to achieve Quantitative analysis of the sample to be tested. Chromatographic devices include liquid chromatography, high performance liquid chromatography and ultra-high performance liquid chromatography. [0003] The quantitative analysis of the sample to be tested mainly depends on the peak area or peak height of the ...
Claims
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IPC IPC(8): G01N30/86
Inventor 王灿王悦王铁军李维森
Owner 达耐科学有限公司