Spectrum peak end point adjustment method and chromatographic workstation with spectrum peak end point adjustment function

Abstract

The invention discloses a spectrum peak end point adjustment method and a chromatographic workstation with a spectrum peak end point adjustment function. The spectrum peak end point adjustment method includes the steps of: determining the middle point of the spectrum peak; sequentially judging the data points in the data group after the spectrum peak middle point Whether the sign of the slope value is changed, if there is a sign change, the last data point before the sign change or the first data point after the sign change is used as the end point of the spectrum peak; if there is no sign change, find the absolute value of the average slope of the data points in the group The first data group is less than the predetermined slope threshold, and any data point in the group is used as the first data point; find the second data group whose average slope absolute value of the data points in the group after the first data group is greater than the predetermined slope threshold , and take any data point in the group as the second data point; find all the data points whose absolute value of the slope between the first data point and the second data point is less than the predetermined slope threshold, and determine the lowest data point as the spectrum peak end point. The invention can quickly and accurately determine the end point of the spectrum peak.

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 ...

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Problems solved by technology

[0006] The purpose of the present invention is to: solve the technical problem of inaccurate identification of the end point of the spectral peak by only using the method of slope threshold judgment in the prior art to identify the starting point and end point of the spectral peak, and provide a method for adjusting the end point of the spectral peak

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