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Dual-light-path and multiposition modulated fluorescence excitation light source measurement method for ingredient content of solution

A fluorescence excitation, multi-position technology, used in fluorescence/phosphorescence, material excitation analysis, material analysis by optical means, etc., to solve non-destructive testing problems, improve accuracy, and suppress spectral nonlinearity.

Inactive Publication Date: 2017-10-24
GUANGDONG POLYTECHNIC NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem of non-destructive testing of complex solution components in packaging bags. It is efficient, simple and pollution-free. See the description below for details:

Method used

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  • Dual-light-path and multiposition modulated fluorescence excitation light source measurement method for ingredient content of solution
  • Dual-light-path and multiposition modulated fluorescence excitation light source measurement method for ingredient content of solution
  • Dual-light-path and multiposition modulated fluorescence excitation light source measurement method for ingredient content of solution

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] In the method for measuring the content of solution components with dual optical path and multi-position modulated fluorescent excitation light sources provided in the embodiment of the present invention, the devices used are such as figure 2 As shown, it includes: a fluorescent excitation light source 3 , a packaging bag 5 , a displacement platform 6 , a spectrum receiving device 7 and a modulation device 9 .

[0061] Among them, it is ensured that the light outlet of the fluorescence excitation light source 3 and the incident slit of the spectrum receiving device 7 are close to the packaging bag 5, and the modulation device 9 modulates the fluorescence excitation light source 3 to emit a square wave light signal, and the fluorescence excitation light source 3 is at position a. Under two optical paths, namely: position a (corresponding to the first optical path 1) and position a' (corresponding to the second optical path 2), the complex solution sample in the packaging...

Embodiment 2

[0070] The only difference between the embodiment of the present invention and the embodiment 1 is that the movement of the fluorescence excitation light source 3 and the spectrum receiving device 7 is different, as described in the following description:

[0071] see image 3 , to ensure that the light exit port of the fluorescent excitation light source 3 and the incident slit of the spectrum receiving device 7 are close to the packaging bag 5, the modulation device 9 modulates the fluorescent excitation light source 3 to emit a square wave light signal, and the fluorescent excitation light source 3 is used for the packaging bag 5. The complex solution sample is excited, and the spectrum receiving device 7 collects the fluorescence spectra at the position a under the dual optical path, namely: the position a and the position a'. The spectrum receiving device 7 is controlled by the displacement platform 6 to move to the position b, and the fluorescence spectrum at the double ...

Embodiment 3

[0076] During the specific implementation, due to the limitation of the space structure, it may happen that the fluorescence excitation light source 3 and the spectrum receiving device 7 cannot be closely attached to the packaging bag 5. In this case, an optical fiber can be arranged at the fluorescence excitation light source 3 and the spectrum receiving device 7 respectively. , as the incident fiber 4 and the output fiber 8 .

[0077] see Figure 4 The modulation device 9 modulates the fluorescence excitation light source 3 to emit a square wave light signal. The fluorescence excitation light source 3 excites the complex solution sample in the packaging bag 5 through the incident optical fiber 4, and the spectrum receiving device 7 collects the fluorescence spectrum through the outgoing optical fiber 8. The optical fiber 4 and the outgoing optical fiber 8 are respectively close to the packaging bag 5, the incident optical fiber 4 is at the position a, and the fluorescence ex...

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Abstract

The invention discloses a dual-light-path and multiposition modulated fluorescence excitation light source measurement method for ingredient content of a solution. The method comprises the following steps: a light emitting outlet of a fluorescence excitation light source and an entrance slit of a spectrum receiving device are tightly attached to a packaging bag, a modulating device is used for modulating the fluorescence excitation light source, the fluorescence excitation light source is used for exciting a complicated solution, and the spectrum receiving device is used for acquiring a fluorescence spectrum; a displacement platform controls the fluorescence excitation light source to move to different positions, fluorescence spectra acquired from a plurality of positions under dual light paths are converted into a frequency domain to construct a plurality of fluorescence spectra in the frequency domain, and the fluorescence spectra in the frequency domain are subjected to normalizing processing and are compared with existing chemoanalytic results to establish a mathematical model; fluorescence spectra of an unknown complicated solution are acquired from a plurality of positions under dual light paths and are converted into a frequency domain to construct fluorescence spectra in the frequency domain, and then, the fluorescence spectra in the frequency domain are subjected to normalizing processing and are interpolated into the mathematical model, so as to obtain the content of measured target ingredients of the complicated solution.

Description

technical field [0001] The invention relates to the field of chemical measurement of spectral complex solution concentration analysis, in particular to a method for measuring the content of solution components by a dual optical path and multi-position modulation fluorescent excitation light source. Background technique [0002] In the prior art, the relatively mature technology is to detect the content of the target components measured by the complex solution in the bag by chemical inspection, which has the outstanding advantage of high accuracy, but the chemical inspection method requires opening the packaging bag and taking out the sample for testing, which cannot be used. Meet the needs of fast, non-contact and pollution-free. [0003] The study found that fluorescence spectroscopy measurement may also realize the content detection of target components measured in complex solutions in packaging bags due to its non-contact, non-polluting and highly targeted characteristics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
CPCG01N21/64G01N2021/6421
Inventor 罗永顺林凌李刚
Owner GUANGDONG POLYTECHNIC NORMAL UNIV
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