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A Method for Direct Quantitative Measurement of Binary Mixed Systems Using Near Infrared Spectroscopy

A technology of near-infrared spectroscopy and binary mixing, applied in the field of direct quantitative measurement of binary mixing systems using near-infrared spectroscopy, can solve problems such as difficult photometric values, complicated methods, and high costs, and achieve convenient use, low work intensity, and wide application range wide range of effects

Inactive Publication Date: 2018-10-19
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for directly quantitatively measuring binary mixed systems by using near-infrared spectroscopy, so as to solve the problems in the prior art that the above-mentioned methods are complex, costly, and difficult to quantify according to strict photometric values place

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  • A Method for Direct Quantitative Measurement of Binary Mixed Systems Using Near Infrared Spectroscopy
  • A Method for Direct Quantitative Measurement of Binary Mixed Systems Using Near Infrared Spectroscopy
  • A Method for Direct Quantitative Measurement of Binary Mixed Systems Using Near Infrared Spectroscopy

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Embodiment 1

[0051] A method for directly quantitatively measuring the binary mixed system of cotton / viscose blended fibers by near-infrared spectroscopy, in the binary mixed system of cotton / viscose blended fibers, component a is viscose fiber, and component b is cotton fiber, Binary mixed system ab is cotton / viscose blended fiber, and the method comprises the following steps:

[0052] S1. Collect component a—near-infrared spectrum A of viscose fiber, component b—near-infrared spectrum B of cotton fiber, binary mixture system ab—near-infrared mixture of cotton / viscose blended fiber by spectrometer Spectrum AB, such as figure 1 , including the near-infrared spectrum A of pure viscose fiber and the near-infrared spectrum B of pure cotton fiber, and the cotton fiber content accounts for 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80% The near-infrared mixed spectrum AB of the cotton / viscose blended fiber of %;

[0053] Select the 1480-1650nm band with relatively significant difference in the near-i...

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Abstract

A method for directly quantitatively measuring a binary mixed system by using near-infrared spectroscopy, relating to a measurement method for a binary mixed system in the optical field, which collects the near-infrared spectra of each component separately, establishes a moving window, and selects the component b The near-infrared spectrum B of the near-infrared spectrum B, the moving window is moved from the left end of the near-infrared spectrum B to the right, and the angles between the near-infrared spectrum B and the near-infrared mixed spectrum AB are respectively calculated to obtain a series of angle values, and the value of the series of angle values ​​is obtained. Variance D; respectively calculate the series variance Di of the near-infrared spectrum B and the near-infrared mixed spectrum AB of the component b at different contents; draw the standard curve of the different contents of the component b and the series variance Di, according to the standard curve, it can be determined The proportion of component a and component b in the binary mixed system ab to be tested is used to quantify the components of the tested substance. The method of the invention is simple, low in cost, low in work intensity, can realize quantification without strict photometric value, and is convenient to use.

Description

technical field [0001] The invention relates to a method for measuring a binary mixing system in the optical field, in particular to a method for directly quantitatively measuring a binary mixing system by using near-infrared spectroscopy. Background technique [0002] The binary mixing system is a common system, for example, formula blending in chemical production, textile blending, food blending, etc. For a long time, the near-infrared spectroscopy analysis method has been used as a quantitative analysis method for the components of the binary mixed system, but the analysis results must rely on a large number of direct measurements of the system, and then based on the direct measurement values ​​and spectral measurements, carry out The secondary modeling method is complex and expensive, which limits the application of near-infrared spectroscopy analysis methods. [0003] Moreover, diffuse reflectance measurement is often used in near-infrared spectroscopy, and it is diffi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/359
CPCG01N21/359
Inventor 姚志湘粟晖姚桔
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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