Dalbergia cochinchinensis small decorative article identification method based on infrared spectrum

Abstract

The invention relates to a dalbergia cochinchinensis small decorative article identification method based on infrared spectrum, and belongs to the technical field of wood identification. The method comprises the steps of 1, grinding and mixing 1-5mg of sample powder of a to-be-detected dalbergia cochinchinensis small decorative article with potassium bromide, pressing into a sample sheet, and preparing a potassium bromide sheet at the same time; 2, firstly testing an infrared spectrum background image, and then testing an infrared spectrogram of the sample; 3, performing coordinate conversion and baseline correction processing on the original spectrum; and 4, comparing the infrared spectrum of the sample with a standard spectrum, and respectively comparing peak positions, shapes, sizes and correlation coefficients of characteristic peaks existing in the infrared spectrum. The method has the advantages of small sample amount, great reduction of the damage to artware, simplicity in operation, objective and accurate experiment result, and realization of the rapid identification of the material of the dalbergia cochinchinensis small decorative article.

Description

technical field [0001] The invention relates to the technical field of wood identification, and specifically provides a method for identifying small ornaments of Dalbergia cochinchinensis based on infrared spectroscopy. Background technique [0002] Dalbergia cochinchinensis, commonly known as Siamese rosewood, is one of the most precious hardwoods in the world. Because of its slow growth, hard texture, beautiful pattern and pleasant smell, it is very popular among people. The small ornaments made of Cochin Dalbergia wood are bright in color and have unique ornamental and collection values. In the market, species similar to Dalbergia cochinchinensis will be used to counterfeit Dalbergia cochinchinensis, which has brought great troubles and economic losses to Dalbergia cochinchinensis handicraft lovers and collectors. [0003] The traditional wood identification method is mainly based on the morphology and arrangement of various types of wood cells and tissues, which are id...

AI Technical Summary

Problems solved by technology

In the market, the species of Dalbergia cochinchinensis will be used to counterfeit Dalbergia cochinchinensis, which has brought great troubles and economic losses to lovers and collectors of Dalbergia cochinchinensis handicrafts

[0003] The traditional wood identification method is mainly based on the morphology and arrangement of various types of wood cells and tissues, which are identified through a microscope. This microscopic identification method has many defects: it will damage the sample (1cm needs to be cut when sampling 3 left and right wood samples), the detection is time-consuming and costly, including softening treatment, slicing and dyeing, etc., generally takes 2 weeks, and requires experienced professionals to identify and identify, with a certain degree of subjectivity, and It is currently difficult to identify species

[0004] However, the technology of classifying based on the constituent elements of wood itself needs to rely on laboratory analysis equipment, and most of them need to grind the wood to destroy the integrity of the wood, and the analysis cost is high, the analysis time is long, and experienced analysis is required The personnel judge the results; the existing wood identification technology based on near-infrared spectroscopy needs to process wood samples, and the directly obtained samples are prone to problems such as broadening of the absorption band and affecting its resolution effect when used for detection

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