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Spectrum measuring device and method of scattering substance of sample cell with isosceles triangle cross section

An isosceles right angle and spectral measurement technology, applied in the field of spectral analysis systems, can solve the problems that the sample cell cannot have an infinite radius, the spectral distribution cannot be obtained, and the influence caused by the measurement of the sample cell side wall is not easy to estimate, so as to improve the analysis accuracy and reduce the The effect of sample size

Inactive Publication Date: 2010-08-04
TIANJIN UNIV
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  • Application Information

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Problems solved by technology

[0006] 2. When using the existing square and circular sample cells for spectral measurement, due to the limited amount of samples, the sample cell used cannot be an ideal infinite radius, and the influence of the side wall of the sample cell on the measurement is not easy to estimate
[0007] 3. In the existing spectrum measurement, the optical fiber is often used for point-to-point spectral information collection, and the incident point of the light source and the receiving point of the outgoing light are fixed, and only fixed optical path and fixed position spectral information can be collected. Spectral distribution with position and optical path cannot be obtained

Method used

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  • Spectrum measuring device and method of scattering substance of sample cell with isosceles triangle cross section
  • Spectrum measuring device and method of scattering substance of sample cell with isosceles triangle cross section
  • Spectrum measuring device and method of scattering substance of sample cell with isosceles triangle cross section

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Embodiment 1

[0032] Such as Figure 5As shown, the light source 1 is introduced by a movable optical fiber, and is incident from a transmission side of the special-shaped sample cell 2 that has been added with the measured scattering substance. The cross-section of the special-shaped sample cell is an isosceles right triangle, and one of the three sides is a reflection plane, and the other two sides are transmission optical planes, and the outgoing light is exported by the movable fiber optic probe 3 and transmitted to the spectrometer for reception. During the measurement process, the incident light moves linearly from the start position to the end position in sequence, and stops after each moving to a set incident position, and then moves the outgoing fiber optic probe in a straight line to scan from the start position to the end position to obtain the incident light Then the position of the incident light moves to the next set incident position and stops moving, and then moves the exit ...

Embodiment 2

[0034] Such as Figure 6 As shown, the light source 1 is introduced by a movable slit, and is incident from the center line side of the transmission side of the special-shaped sample cell 2 that has been added with the scattering substance to be measured. The cross-section of the special-shaped sample cell is an isosceles right triangle, with three sides Among them, two sides are reflective planes, and the third side is a transmissive optical plane. The outgoing light is detected and collected by a movable spectral imaging device 3 . During the measurement process, the incident light moves linearly from the start position to the end position in sequence, and stops after each movement to a set incident position, and then is scanned by the spectral imaging device to obtain the outgoing spectral distribution of the incident light position, and then the incident light The light position stops after moving to the next set incident position, and the spectral imaging device scans ag...

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Abstract

The invention discloses spectrum measuring device and method of a scattering substance of a sample cell with an isosceles triangle cross section. The measuring device comprises a sample cell, a light source and an emergent light detector, wherein the sample cell has a cross section of an isosceles triangle; both the incident position of the light source and the position of an emergent light detector are movable; and a light path formed by the sample cell, the light source and the light-emergent detector is changeable. Meanwhile, the invention also discloses a spectrum measuring method of the scattering substance of the sample cell with the isosceles triangle cross section which realizes the measurement on mutually-uncorrelated non-linear spectrums with multiple pathlength by horizontally and / or vertically moving the incident position of the light source and the position of the emergent light detector and changing the relative positions of the light source, the emergent light detector and the sample cell to form the change of the light path, thereby obtaining a distributed uncorrelated non-linear spectrum information of a substance to be measured. The invention can ensure that the analyzing precision of the component content of the substance to be measured is improved.

Description

technical field [0001] The invention relates to a spectrum analysis system, in particular to a scattering material spectrum measuring device and method for an isosceles rectangular cross-section sample cell used for component analysis of turbid scattering materials. Background technique [0002] Spectral analysis is one of the important means to study the structure of matter, mainly including infrared spectroscopy, Raman spectroscopy, fluorescence spectroscopy, ultraviolet-visible absorption spectroscopy, near-infrared spectroscopy, and the combination of various dynamic spectra and other methods. Among them, near-infrared spectroscopy has been widely used in various fields due to its fast speed, no damage to samples, simple operation, good stability, and high efficiency. Due to the continuous development of various science and technology such as optics, computer data processing technology, chemical photometry theory and methods, spectral analysis methods have been applied i...

Claims

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Application Information

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IPC IPC(8): G01N21/25G01N21/03
Inventor 李刚赵喆林凌
Owner TIANJIN UNIV
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