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Method for measuring contents of components in bagged complex solution based on double-light-path transmission spectra

A transmission spectrum, dual optical path technology, used in color/spectral property measurement, measurement device, material analysis by optical means, etc. Attenuator and other problems, to achieve the effect of solving non-destructive testing problems, strong operability, and improving analysis accuracy

Inactive Publication Date: 2017-12-01
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] It is difficult to find exactly the same neutral attenuator in different occasions, and it is difficult to ensure that the position of the sample and the neutral attenuator are consistent

Method used

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  • Method for measuring contents of components in bagged complex solution based on double-light-path transmission spectra
  • Method for measuring contents of components in bagged complex solution based on double-light-path transmission spectra
  • Method for measuring contents of components in bagged complex solution based on double-light-path transmission spectra

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The embodiment of the present invention provides a method for measuring the content of components in a bagged complex solution by dual optical path transmission spectroscopy. The devices used are such as figure 2 As shown, it includes: a light source 3 , a packaging bag 5 , a displacement platform 6 and a spectrum receiving device 7 .

[0069] Wherein, ensure that the light outlet of the light source 3 and the incident slit of the spectrum receiving device 7 are close to the packaging bag 5 and coaxial, and the light source 3 is at the first position a (corresponding to the first optical path 1) for the complex solution in the packaging bag 5 Transmission, the transmission spectrum is collected by the spectrum receiving device 7. Then, the displacement platform 6 controls the light source to move to the second position b (corresponding to the second optical path 2) under the premise of ensuring that the light output port of the light source 3 is coaxial with the output...

Embodiment 2

[0078] The difference between the embodiment of the present invention and embodiment 1 is only that the light source 3 and the movement mode of the spectrum receiving device 7 are different, see the following description for details:

[0079] see image 3 , to ensure that the light outlet of the light source 3 and the incident slit of the spectrum receiving device 7 are close to the packaging bag 5 and coaxial, the light source 3 transmits the complex solution in the packaging bag 5, and the transmission is collected at the first position a by the spectrum receiving device 7 spectrum. Then, under the premise of ensuring that the light outlet of the light source 3 is coaxial with the incident slit of the spectrum receiving device 7, the displacement platform 6 controls the spectrum receiving device 7 to move to the second position b, and collects the transmission spectrum at the second position b.

[0080] Wherein, the subsequent steps of normalization, establishment of a math...

Embodiment 3

[0084] The difference between the embodiment of the present invention and embodiment 1 is only that the light source 3 and the moving direction of the spectrum receiving device 7 are different, see the following description for details:

[0085] see Figure 4 , ensure that the light source 3 and the spectrum receiving device 7 are close to the packaging bag 5 and ensure that the light outlet of the light source 3 is coaxial with the incident slit of the spectrum receiving device 7, and the complex solution in the packaging bag 5 is processed by the light source 3 at the first position a. Transmission, the transmission spectrum is collected by the spectrum receiving device 7 at the first position a', and then the light source 3 and the spectrum receiving device are controlled by the displacement platform 6 under the premise of ensuring that the light outlet of the light source 3 is coaxial with the incident slit of the spectrum receiving device 7 The device 7 moves to the secon...

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Abstract

The invention discloses a method for measuring the contents of components in a bagged complex solution based on double-light-path transmission spectra. The method comprises the steps that the emergent light outlet of a light source and the incident slit of a spectrum receiving device both cling to a packaging bag and are allowed to be coaxial, the light source carries out transmission on a complex solution, and the spectrum receiving device acquires a transmission spectrum; a displacement platform controls the light source to move on the premise that the emergent light outlet of the light source and the incident slit of the spectrum receiving device are ensured to be coaxial, and the spectrum receiving device acquires the transmission spectrum of the complex solution; the logarithms of light intensity ratios at every wavelength of the two transmission spectra are calculated and normalized, then comparison with known chemical analysis results is carried out, and a mathematical model is constructed; and the transmission spectra of an unknown complex solution at two positions are acquired, the logarithm of the ratio of the two transmission spectra is calculated so as to obtain an absorption spectrum, and the absorption spectrum is normalized and then substituted into the mathematical model for calculation so as to obtain the contents of to-be-measured target components in the complex solution. The method provided by the invention can eliminate influence caused by light source changes and a bag container and improve the analysis precision of the contents of components in complex solutions.

Description

technical field [0001] The invention relates to the field of stoichiometry for concentration analysis of spectrally complex solutions, in particular to a method for measuring the component content of bagged complex solutions by dual optical path transmission spectroscopy. Background technique [0002] In the existing technology, the relatively mature technology is to detect the content of complex solution components in the packaging bag through chemical inspection, which has the outstanding advantage of high accuracy, but the method of chemical inspection cannot meet the needs of fast, non-contact, and pollution-free. Due to its non-contact and non-polluting characteristics, spectroscopic measurement is also possible to detect the content of complex solution components in packaging bags. [0003] In spectral detection, according to the Lambert-Beer law: the incident light intensity I of each wavelength is measured separately 0 and the outgoing light intensity I, the absorba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/31G01N21/255
Inventor 李刚张盛昭罗永顺张梦秋林凌
Owner TIANJIN UNIV
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