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Near infrared quality control analysis method and system of tobacco

A control analysis, near-infrared technology, applied in the field of near-infrared spectroscopy in analytical chemistry, can solve the problem of no chemical quality database in the tobacco system, and achieve the effects of convenient tobacco quality monitoring, rapid on-site determination, and rapid determination

Inactive Publication Date: 2011-03-30
BEIJING KAIYUAN SHENGSHI SCI & TECH DEV
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Problems solved by technology

[0009] The invention provides a tobacco near-infrared quality control analysis method and system to solve the problem of rapid determination of tobacco intrinsic quality components and the problem that the tobacco system has no chemical quality database

Method used

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  • Near infrared quality control analysis method and system of tobacco
  • Near infrared quality control analysis method and system of tobacco

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1, see figure 1 As shown, this tobacco near-infrared quality control analysis method includes spectral collection and data analysis of tobacco samples. The steps are as follows:

[0032] Step 1: Collect representative tobacco samples and grind them into powder;

[0033] Step two, turn on the tobacco sample collection instrument, preheat, use the data collection module of the analysis system, select the spectral background channel, adjust the resolution to 4cm-1, the wavelength range to 700-1100nm, the cumulative number of collections is 32, and scan the air spectrum As background

[0034] Step 3: After setting the instrument parameters, scan representative tobacco samples one by one as a calibration set;

[0035] Step four, select an unknown sample, grind it into powder, set the instrument parameters, and the scanner spectrum;

[0036] Step 5, open the chemometrics module of the analysis system, select the PLS1 algorithm, preprocess the spectrum data, and establish a ca...

Embodiment 2

[0042] The second embodiment is different from the first embodiment in that step five selects the systematic clustering analysis in the chemometrics module.

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Abstract

The invention discloses a near infrared quality control analysis method of tobacco. The method comprises the following steps of: collecting representative tobacco samples and grinding into powder; opening a tobacco sample acquisition instrument and preheating; setting parameters of the instrument; scanning the representative tobacco samples one by one; selecting an unknown sample, grinding into powder and forming a scanner spectrogram; opening a chemometric module of an analysis system, selecting an algorithm, preprocessing spectral data and establishing a correction model: setting a wavelength range of between 700 and 1,100nm, standardizing a spectrum value and chemical value, saving the established model and starting to correct the model; and predicting the sample and starting to calculate after selecting the unknown sample so as to obtain a quantitative and qualitative sample analysis result. Through the method and the system, the quality parameter of the tobacco can be quickly measured, and the quality of the tobacco can be quickly measured, controlled and analyzed on site. The method and the system are also suitable for quality monitoring of medicaments, milk, milk powder and the like, raw material comparison, analysis of product consistency and the like.

Description

Technical field [0001] The invention relates to the field of near-infrared spectroscopy analysis in analytical chemistry, in particular to a near-infrared spectroscopy analysis method and system for tobacco quality control analysis. Background technique [0002] Near infrared (Near Infrared NIR) light refers to electromagnetic waves with a wavelength between the visible and mid-infrared regions, with a wavelength range of about 0.8-2.5 μm and a wave number range of about 12500-4000 cm-1. Near-infrared analysis combines the advantages of easy access to spectral analysis signals in the visible region and rich information in infrared spectral analysis, making near-infrared spectral analysis a new type of analysis technology. [0003] Beginning in the 1950s, Norris and others in the United States applied near-infrared spectroscopy technology to agriculture to conduct modern near-infrared analysis. This method was first applied to the determination of moisture in agricultural products,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35G01N21/3563G01N21/359
Inventor 田福成段佳朱业伟
Owner BEIJING KAIYUAN SHENGSHI SCI & TECH DEV
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