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Method and system for quantitative analysis of Raman spectrum based on direct extraction of spectral peak height

A quantitative analysis and Raman spectroscopy technology, which is applied in the field of spectral detection and spectral analysis, can solve the problems of low precision and differences in detection results, achieve high quantitative analysis precision, eliminate the influence of fluorescence, and improve the effect of quantitative analysis precision

Active Publication Date: 2022-05-10
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing Raman spectrum analysis method has large differences in detection results and low precision when the spectrum shape changes, and provides a Raman spectrum quantitative analysis method based on direct extraction of spectral peak heights and system

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  • Method and system for quantitative analysis of Raman spectrum based on direct extraction of spectral peak height
  • Method and system for quantitative analysis of Raman spectrum based on direct extraction of spectral peak height
  • Method and system for quantitative analysis of Raman spectrum based on direct extraction of spectral peak height

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Embodiment Construction

[0041] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] Raman spectroscopy combined with laser technology can easily achieve quantitative analysis of substances. The existing Raman quantitative analysis method needs to perform background subtraction, and then perform quantitative analysis according to the peak area of ​​the Raman peak. The current automated background subtraction algorithm is based on the spectral shape of the Raman spectrum. If the spectral shape changes, many errors may occur, resulting in a decrease in the accuracy of the Raman spectral quantitative analysis system. Based on this, the present invention provides a method and system for quantitative analysis of Raman spectra based on direct extraction of spectral peak heights. The analysis system can improve the precision of the Raman spectroscopy quantitative analysis system.

[0043] Such as fig...

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Abstract

The present invention provides a Raman spectrum quantitative analysis method and system based on direct extraction of spectral peak heights, which solves the problems of large differences in detection results and low precision in existing Raman spectral analysis methods when the spectral shape changes. The method and the system do not need background subtraction, thereby improving the precision of the Raman spectrum quantitative analysis system. The method includes: step 1, collecting Raman light signals passing through the sample, and processing the Raman light signals into digital signals; step 2, performing singularity noise removal processing on the target substance signal processed in step 1; step 3, processing the The signal processed in step 2 is processed to extract the peak height; step 4, repeat the data processing process of step 2 and step 3, carry out the same processing to the reference substance, and obtain the peak height signal of the reference substance; step 5, perform the peak height signal on the peak height signal Normalization processing; step 6, performing quantitative analysis on the signal processed in step 5 to obtain a quantitative analysis result of the sample.

Description

technical field [0001] The invention belongs to the field of spectrum detection and spectrum analysis, in particular to a Raman spectrum quantitative analysis method and system based on direct extraction of spectrum peak heights. Background technique [0002] Raman spectroscopy detection technology is a kind of spectral detection technology, which has been widely used because of its relatively simple light source, good ability to identify substances, and no complicated processing of samples. Existing portable Raman spectroscopy equipment can be used directly on samples without any treatment, making it widely used in various fields such as mineral prospecting, drug detection, and food detection. [0003] Existing Raman spectral analysis methods generally require background subtraction first, and then spectral analysis. Most of the automated background subtraction algorithms are designed according to the spectral shape of the Raman spectrum, for example, polynomial fitting me...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/65
CPCG01N21/65
Inventor 周淼淼聂荣志高飞王鹏飞彭波
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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