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Gas chromatography-mass spectrometry method for identifying dalbergia odorifera and dalbergia tonkinensi

A technology of Dalbergia Dalbergia and GC-MS, which is applied in the field of wood identification, can solve the problems that the appraiser is difficult to determine, confuses right and wrong, cannot identify or confirm, and achieves the effect of good application prospect and simple operation

Inactive Publication Date: 2014-11-26
浙江省林产品质量检测站
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Problems solved by technology

In addition, there are computer image processing methods for wood species identification (Re Hong-e, et al., 2007; Tang Lili, et al., 2006), and inorganic indicators based on wood surface gloss, chroma, etc. Difference method, etc. (Wang Keqi, et al., 2008), but in actual identification, these differences will inevitably confuse right and wrong, making it difficult for appraisers to make a decision. As a result, the existing timber appraisal institutions or scientific research institutes in my country usually only The genus or class can be identified, but the species name cannot be identified or determined, and the chemical classification method may make up for this deficiency

Method used

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  • Gas chromatography-mass spectrometry method for identifying dalbergia odorifera and dalbergia tonkinensi
  • Gas chromatography-mass spectrometry method for identifying dalbergia odorifera and dalbergia tonkinensi
  • Gas chromatography-mass spectrometry method for identifying dalbergia odorifera and dalbergia tonkinensi

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Embodiment

[0029] A kind of GC-MS method for distinguishing Dalbergia balsamicus and Vietnamese fragrant branches, consists of the following steps in turn:

[0030] A. Extraction of fat-soluble components: use a sampler to take thin slices of samples from Dalbergia japonica and Vietnamese incense sticks, put them into bottles, inject ethyl acetate, place them in an ultrasonic extractor for extraction, and take the supernatant;

[0031] B. Detection and analysis of fat-soluble ingredients: perform chromatographic detection and analysis on the supernatant, and conduct comparative analysis with the mass spectrogram; use a gas chromatography-mass spectrometer for detection and analysis, and perform mass spectrometry retrieval. Specifically, the obtained mass spectrogram is retrieved by NIST08, and The detected compounds correspond one-to-one.

[0032] C. Qualitative discrimination: compare the fingerprints to obtain the characteristic components, calculate the relative content of the charac...

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Abstract

The invention belongs to the technical field of wood identification, relates to a method for identifying dalbergia odorifera and dalbergia tonkinensi, and in particular relates to a gas chromatography-mass spectrometry method for identifying dalbergia odorifera and dalbergia tonkinensi. The gas chromatography-mass spectrometry method sequentially comprises the following steps of: A, fat-soluble component extraction; B, fat-soluble component detection and analysis; and C, qualitative distinguishing. The gas chromatography-mass spectrometry method for identifying the dalbergia odorifera and the dalbergia tonkinensi thoroughly avoids the similarity of the dalbergia odorifera and the dalbergia tonkinensi in physical behavior, makes full use of the difference of the dalbergia odorifera and the dalbergia tonkinensi in fat-soluble components, and solves the problem of difficult discrimination of the dalbergia odorifera and the dalbergia tonkinensi. The method is simple and convenient to operate, high-efficiency and environment-friendly, is suitable for both complete wood and wood flour, is especially suitable for identification of wood assortment of some indestructible finished furniture and artware, and has good application prospects in the technical field.

Description

technical field [0001] The invention belongs to the technical field of wood identification, and relates to a method for identifying Dalbergia balsamicus and Vietnamese incense sticks, in particular to a gas chromatography-mass spectrometry method for identifying Dalbergia japonica and Vietnamese incense sticks. Background technique [0002] Dalbergia odorifera is an arbor of the Papilionaceae Dalbergia genus. It is one of the unique and precious mahogany tree species in my country. It is native to Hainan Province, so it is also known as Hainan Huanghuali and Hainan Xiangzhimu. It is favored by high-end consumers because of its excellent material, high quality, high price, timeless charm of craftsmanship, prominent position in the furniture market and appreciation potential. And there is another kind of Dalbergia wood on the market. Its color, density and structure are very similar to Dalbergia Dalbergia. It is also circulated in the market as huanghuali. tonkinensi) or Viet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/88
Inventor 杨柳方崇荣朱杰丽柴振林杨伟明徐漫平王增
Owner 浙江省林产品质量检测站
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