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Method for measuring component of complex solution though double-light path transmission and fluorescence spectroscopy at multiple positions

A technique of fluorescence spectroscopy and transmission spectroscopy, which is applied in the field of chemical metrology for concentration analysis of complex spectral solutions to achieve the effect of eliminating influence, solving non-destructive testing problems, and highly targeted measurement.

Inactive Publication Date: 2017-09-15
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The invention provides a method for measuring complex solution components with dual optical path transmission and fluorescence spectroscopy at multiple positions, the measurement is highly targeted, the influence of the change of the transmission light source and the packaging bag is eliminated, and the accuracy of the content analysis of complex solution components is greatly improved , which solves the problem of non-destructive testing of complex solutions in bags, with high efficiency and no pollution. See the description below for details:

Method used

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  • Method for measuring component of complex solution though double-light path transmission and fluorescence spectroscopy at multiple positions
  • Method for measuring component of complex solution though double-light path transmission and fluorescence spectroscopy at multiple positions
  • Method for measuring component of complex solution though double-light path transmission and fluorescence spectroscopy at multiple positions

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Embodiment 1

[0073] The embodiment of the present invention provides a method for measuring complex solution components with dual optical path transmission and fluorescence spectroscopy at multiple positions, and 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 .

[0074] 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 the light source 3 is under the two optical paths at position a: position a (corresponding to the first optical path 1) and position a' (corresponding to the second optical path 2) transmits and excites the complex solution in the packaging bag 5, and the transmission spectrum and fluorescence spectrum are collected by the spectrum receiving device 7; then the light source 3 is controlled by the displacement platform 6 to move to position b, at position b Unde...

Embodiment 2

[0083] 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:

[0084] see image 3 , 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, the light source 3 transmits and excites the complex solution in the packaging bag 5, and the spectrum receiving device 7 collects the double light at position a The process is: the transmission spectrum and fluorescence spectrum of position a and position a'. The spectrum receiving device 7 is controlled to move to the position b through the displacement platform 6, and the transmission spectrum and the fluorescence spectrum of the position b and the position b' are collected under the double optical path at the acquisition position b; the spectrum receiving device 7 is controlled to...

Embodiment 3

[0089]During specific implementation, due to the limitation of the space structure, it may occur that the light source 3 and the spectrum receiving device 7 cannot be close to the packaging bag 5. At this time, an optical fiber can be respectively arranged at the light source 3 and the spectrum receiving device 7 as the incident optical fiber 4 and outgoing fiber 8.

[0090] see Figure 4 , the light source 3 transmits and excites the complex solution in the packaging bag 5 through the incident optical fiber 4, the transmission spectrum and the fluorescence spectrum are collected by the spectrum receiving device 7 through the outgoing optical fiber 8, the incident optical fiber 4 and the outgoing optical fiber 8 are respectively close to the packaging bag 5, The incident optical fiber 4 is at position a, and the light source 3 passes through the incident optical fiber 4 under the double optical path at this position, namely: position a and position a' transmit and excite the c...

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Abstract

The invention discloses a method for measuring the component of a complex solution by double-light path transmission and fluorescence spectroscopy at multiple positions. The method comprises the following steps: a displacement platform controls a light source to move to multiple positions in order to respectively transmit and stimulate the complex solution, and a spectrum receiving device acquires double-light path transmission and the fluorescence spectra at every position; the acquired transmission spectrum ratio at every position undergoes logarithmic computation to obtain the absorption spectrum of the complex solution at the corresponding position, the absorption spectra at multiple positions and the double-light path fluorescence spectra at multiple positions are normalized, and the normalized result is compared with existing chemical analysis results to establish a mathematical model; and the double-light path transmission spectra and fluorescence spectra of an unknown complex solution at multiple positions are acquired, the double-light path transmission spectrum acquired at every position is calculated to obtain the absorption spectrum, the absorption spectra and the double-light path fluorescence spectra at multiple positions are normalized, and the obtained normalization result is substituted to the mathematical model and is calculated in order to obtain the content of the measured target component.

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 components of complex solutions using dual optical path transmission and fluorescence spectroscopy at multiple positions. Background technique [0002] In the existing technology, the relatively mature technology is to detect the content of the target components in the complex solution in the packaging bag through chemical inspection, which has the outstanding advantage of high accuracy, but the method of chemical inspection cannot meet the requirements of fast, non-contact, and pollution-free Due to its non-contact and non-polluting characteristics, it is also possible to realize the content detection of the target components measured in the complex solution in the packaging bag by spectroscopic measurement. [0003] In spectral detection, according to the Lambert-Beer law: the incident light intensity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84G01N21/64G01N21/59
CPCG01N21/84G01N21/59G01N21/6402
Inventor 李刚张梦秋张盛昭罗永顺林凌
Owner TIANJIN UNIV
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