Method for identifying fluorescence of wood

An identification method and wood technology, which is applied in the field of wood fluorescence identification, can solve problems such as illegal income, and achieve the effect of being easy to be widely promoted and used, with uniformity and reproducibility

Active Publication Date: 2017-06-20
张韬
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Problems solved by technology

There is also a big gap in price between the woods that are also classified as mahogany, but because many of them are woods of the same family or genus, they have a high degree of similarity in botanical structural characteristics, and it is di

Method used

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  • Method for identifying fluorescence of wood
  • Method for identifying fluorescence of wood
  • Method for identifying fluorescence of wood

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Embodiment Construction

[0057] Hereinafter, the present invention will be further described in conjunction with the embodiments and drawings, which are only for explanation and not intended to limit the protection scope of the present invention.

[0058] Apparatus and equipment used for identification:

[0059] Electronic balance, JA3003, measuring range: 0-300g, resolution: 1mg, Shanghai Precision Scientific Instrument Company.

[0060] Dark box type three-purpose UV analyzer, WFH-203B, wavelength: 254nm, 365nm, maximum irradiation area: 250×250(mm), Shanghai Chitang Instrument Co., Ltd.

[0061] Air convection drying oven, ST-110B1, temperature range: 20-200°C, accuracy ±0.7°C, ESPEC Equipment Company.

[0062] Fluorescence spectrometer, FS5, excitation spectrum range: 200nm-1000nm, emission spectrum range: 200nm-870nm, wavelength accuracy: ±0.5nm, Edinburgh Instruments, UK.

[0063] Other instruments: 50ml stoppered test tube, weighing paper, filter paper, measuring cylinder, pulverizer, silica ...

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Abstract

The invention relates to a method for identifying fluorescence of wood. The method comprises the following steps: A. grinding the wood to be determined into wood flour and extracting a fluorescent substance in different polar solvents to obtain different solutions; B. primarily determining the strongest emission spectra of the solution to obtain the primary strongest emission wavelength; C. determining the strongest excitation spectrum of the solution, and a solvent with the unique characteristic peak, and obtaining the accurate strongest excitation wavelength and fluorescence intensity thereof; D. accurately determining the strongest emission spectrum of the solution, and obtaining the accurate strongest emission wavelength and fluorescence intensity thereof; E. comparing the obtained strongest emission wavelength and fluorescence intensity thereof with a spectrum of the known wood to obtain the specific tree species of the wood to be determined. The identifying method provided by the invention has uniformity and reproducibility, and can be widely used.

Description

[0001] [technical field] [0002] The invention relates to a method for identifying wood types by means of measuring fluorescent substances of wood, in particular to a method for identifying wood fluorescence. [0003] [Background technique] [0004] With the development of wood scientific identification technology, there are many ways to identify wood. In addition to the most commonly used wood anatomical structure identification methods, there are physical and chemical identification, gene expression identification, near-infrared spectroscopy, and the use of wood stress waves to identify certain specific woods. [0005] At present, the research on wood extracts at home and abroad is mainly in the aspects of wood extract components, wood extracts and wood industry utilization, and the impact of environmental conditions on wood extracts. Wood extracts are used for wood classification. Studies have been reported at home and abroad, but the number is very small. For example: we...

Claims

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Application Information

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IPC IPC(8): G01N21/64
CPCG01N21/6402
Inventor 张韬吴臻
Owner 张韬
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