Non-contact rapid detection system and method for fine Raman spectrums of substances

A technology of Raman spectroscopy and detection system, which is applied in the field of non-contact and rapid detection system for fine Raman spectroscopy of substances, which can solve the problems of low utilization rate of optical signals of ordinary spectrometers, limited filtering effect of optical filters, and cumbersome problems, so as to avoid The effect of Rayleigh scattered light

Inactive Publication Date: 2019-07-26
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0003] Ordinary Raman spectroscopy measurement systems mainly include: lasers, optical filters, and spectrometers. There are two defects. One is that the filtering effect of optical filters is limited, and it can only filter out Rayleigh scattered light. The impact is very small; the second is that the o

Method used

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  • Non-contact rapid detection system and method for fine Raman spectrums of substances
  • Non-contact rapid detection system and method for fine Raman spectrums of substances
  • Non-contact rapid detection system and method for fine Raman spectrums of substances

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[0039] refer to figure 1 , a non-contact and rapid detection system for fine Raman spectroscopy of substances, including a high spectral resolution spatial heterodyne spectrometer 3 and a laser 1 for measurement, wherein the measured object 2 is placed in a high spectral resolution space set at intervals Between the heterodyne spectrometer 3 and the laser 1 , the high spectral resolution spatial heterodyne spectrometer 3 is externally connected to a computer terminal 4 .

[0040] The non-contact and rapid detection method for fine Raman spectroscopy of substances using the above-mentioned non-contact and rapid detection system for fine Raman spectroscopy of substances includes the following steps:

[0041] 1) Simulation spectrum: according to the selected analyte 2, first use Gaussvie6.0 to build the molecular configuration of the analyte, and then use Gaussian16w in combination with first principles to obtain the Raman spectrum to obtain the Raman spectrum peak information; ...

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Abstract

The invention discloses a non-contact rapid detection system and method for fine Raman spectrums of substances. The system comprises a high-spectral resolution spatial heterodyne spectrometer for measurement and a laser; a tested object is arranged between the spaced high-spectral resolution spatial heterodyne spectrometer and laser; and the high-spectral resolution spatial heterodyne spectrometeris externally connected with a computer terminal. The method comprises the following steps of 1) simulating a spectrum; 2) determining the spatial heterodyne spectrometer; 3) determining parameters of the laser; and 4) carrying out detection. The system is low in cost and easy to realize. The method does not need to treat samples and is suitable for detecting substances which are not easy to contact and analyzing and detecting chemical drugs.

Description

technical field [0001] The invention relates to the analysis and detection technology of chemicals and substances that are not easily accessible, in particular to a non-contact and rapid detection system and detection method for fine Raman spectrum of substances. Background technique [0002] Raman spectroscopy analysis technology is an accurate, non-destructive and efficient spectral detection technology based on Raman effect. The Raman effect means that when a substance is irradiated with a laser, a series of Raman scattered light with a wavelength larger or smaller than the wavelength of the irradiated light will be produced. The displacement of these Raman scattered light relative to the irradiated laser corresponds to the type of molecular groups of the substance, and the intensity depends on the number of molecular groups of the substance. Therefore, Raman spectroscopy can be used for qualitative and quantitative measurement of substance molecules. For the detection o...

Claims

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Application Information

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IPC IPC(8): G01N21/65G01J3/44
CPCG01J3/44G01N21/65
Inventor 王新强葛浩然叶松王方原李树甘永莹
Owner GUILIN UNIV OF ELECTRONIC TECH
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