Identification method of radix puerariae powder of different production areas based on laser-induced-breakdown spectroscopy

A technology of laser-induced breakdown and spectral technology, which is applied in the field of identification of pueraria powder from different origins, can solve the problems that the identification research of pueraria powder is in a blank stage, and achieve the effect of being conducive to portable instruments, development, and low cost

Inactive Publication Date: 2019-01-01
ZHEJIANG FORESTRY UNIVERSITY
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Problems solved by technology

However, the research on the identification of kudzu root powder from different origins based on LIBS technology is still in a blank stage.

Method used

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  • Identification method of radix puerariae powder of different production areas based on laser-induced-breakdown spectroscopy
  • Identification method of radix puerariae powder of different production areas based on laser-induced-breakdown spectroscopy
  • Identification method of radix puerariae powder of different production areas based on laser-induced-breakdown spectroscopy

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Embodiment

[0037] see Figure 1 to Figure 3 The specific steps of the identification method of kudzu root powder from different origins based on laser-induced breakdown spectroscopy technology in this embodiment are as follows:

[0038] 1. The experimental samples are 5 kinds of pure pueraria powder from different origins that are common on the market, namely pure pueraria powder from Zhejiang (Jiahui), pure pueraria powder from Hubei (Guosenyuan), pure pueraria powder from Hunan (Gexishi), and pure pueraria powder from Yunnan powder (Xuanqing), Anhui pure Pueraria powder (Heshansheshui).

[0039] 2. Dry and grind all pueraria powder samples, and compress pueraria powder into tablets using a desktop powder tablet press. When compressing tablets, take about 0.5g of each tablet and press it under a pressure of 20MPa for 1min to make a disc with a diameter of about 15mm and a thickness of about 2mm. Each of the five samples was pressed into 50 tablets.

[0040] 3. In order to prevent the...

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Abstract

The invention discloses an identification method of radix puerariae powder of different production areas based on a laser-induced-breakdown spectroscopy and belongs to the technical field of laser spectroscopy. The identification method comprises the following steps: (1) selecting pure radix puerariae powder samples of different production areas and adding classification tags of different production areas on the radix puerariae powder samples; (2) drying and grinding all the radix puerariae powder samples to prepare tablets; (3) collecting spectrum lines of the radix puerariae powder samples in the tablets by using the laser-induced-breakdown spectroscopy; (4) carrying out main component analysis of spectroscopic data of the radix puerariae powder samples and selecting characteristic wavelengths by using a main component analysis method; (5) dividing the radix puerariae powder samples of different production areas into modeling sets and prediction sets according to a uniform ratio; (6)taking the characteristic wavelengths as input, taking production area classification tags as output, respectively building discriminatory analysis models and comparing accuracy rate of the modelingsets and the prediction sets of different discriminatory analysis models to obtain an optimal discriminatory analysis model; and (7) identifying production areas of radix puerariae powder to be detected by using the optimal discriminatory analysis model.

Description

technical field [0001] The invention relates to the technical field of laser spectroscopy, in particular to a method for identifying pueraria powder from different origins based on laser-induced breakdown spectroscopy. Background technique [0002] Laser-induced breakdown spectroscopy (LIBS) is an emerging atomic analysis technique, which has the characteristics of fast, simple pretreatment, multi-element analysis and online remote analysis. This technology utilizes laser ablation of samples to generate plasma, and conducts qualitative and quantitative detection by analyzing the spectral signals emitted by the plasma. Compared with traditional Chinese medicine detection methods such as high performance liquid chromatography, atomic absorption spectrometry, atomic fluorescence spectrometry, and inductively coupled plasma mass spectrometry, laser-induced breakdown spectroscopy has the advantages of fast, simple, accurate, minimal damage, and multi-element simultaneous analysis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/71
CPCG01N21/718
Inventor 乔宝鑫孔汶汶
Owner ZHEJIANG FORESTRY UNIVERSITY
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