Nitrate concentration prediction method based on iPLS-PA algorithm

A concentration prediction and nitrate technology, applied in the measurement of color/spectral characteristics, etc., can solve the problems of high price, consumption of reagents, long analysis time, etc., and achieve the effect of improving prediction accuracy, convenient and fast measurement, and high prediction accuracy.

Active Publication Date: 2020-04-10
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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[0003] The purpose of the present invention is to provide a nitrate concentration prediction method based on the iPLS-PA algorithm, which solves the problems of high pric

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  • Nitrate concentration prediction method based on iPLS-PA algorithm
  • Nitrate concentration prediction method based on iPLS-PA algorithm
  • Nitrate concentration prediction method based on iPLS-PA algorithm

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[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0049] The conventional peak area-based method is to measure and calculate water samples with different concentrations to obtain the regression curve of the peak area of ​​the measured absorbance curve and the nitrate concentration, and then calculate the nitrate concentration of the unknown water sample according to the corresponding relationship. The way peak areas are calculated has a direct impact on the accuracy of predictions.

[0050] The present invention proposes a method that can quickly, accurately and stably predict the concentration of nitrate in water, based on the interval partial least squares method combined with the peak area (iPLS-PA) modeling prediction method, in order to optimize the selected peak area In order to obtain the most suitable peak area for nitrate concentration modeling, the prediction accuracy of nitrate conc...

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Abstract

The invention belongs to a nitrate concentration prediction method, and particularly relates to a nitrate concentration prediction method based on an iPLS-PA algorithm. The problems of high price, complex operation, long analysis time, reagent consumption, secondary pollution to a water body and the like of a traditional nitrate determination method are solved. Cross validation modeling is carriedout by utilizing the peak area of each sub-interval and the corresponding nitrate concentration, and an optimal peak area calculation interval is selected to obtain higher nitrate concentration prediction precision.

Description

technical field [0001] The invention belongs to a nitrate concentration prediction method, in particular to a nitrate concentration prediction method based on an iPLS-PA algorithm. Background technique [0002] Excessive nitrate concentration in water will cause eutrophication of water and endanger human health. Traditional nitrate determination methods include ion chromatography, cadmium column reduction method, ion electrode method, etc., but there are generally some disadvantages, such as most of the methods are expensive, complex operation and long analysis time, need to consume reagents, and exist secondary pollutants to the water body. pollution etc. Contents of the invention [0003] The purpose of the present invention is to provide a nitrate concentration prediction method based on the iPLS-PA algorithm, which solves the problems of high price, complex operation, long analysis time, consumption of reagents, and secondary pollution to water bodies in the tradition...

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Application Information

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IPC IPC(8): G01N21/33
CPCG01N21/33
Inventor 王雪霁于涛刘嘉诚张周锋刘宏刘骁雷会平胡炳樑
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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