Identification method of sandalwood red sandalwood and dyed red sandalwood and its products

Abstract

The invention provides an identification method of pterocarpus santalinus wood and pterocarpus tinctorius wood and products of the pterocarpus santalinus wood and the pterocarpus tinctorius wood, which is capable of effectively overcoming the disadvantages of a traditional method for identifying pterocarpus santalinus and pterocarpus tinctorius that the consumed time is long, products of the pterocarpus santalinus and the pterocarpus tinctorius are seriously damaged, the misjudgment rate is high, and the like. The identification method comprises the following steps of pretreating a sample; carrying out GC-MS (Gas Chromatography-Mass Spectrometry) detection on the pretreated sample by utilizing a GC-MS (Gas Chromatograph-Mass Spectrometer), thus obtaining a retention time-relative abundance map and a mass spectrum, wherein parameters of the GC-MS are set as follows: the sample injection opening temperature is 255 DEG C to 275 DEG C, the flow division speed is 10 ml / min to 30.0 ml / min, the flow division time is 0.5 min to 3 min, the scanning interval is 0.3 s to 1.0 s, the MS transmission line temperature is 235 DEG C to 310 DEG C, and the ion source temperature is 235 DEG C to 315 DEG C; analyzing a molecular formula and the molecular weight of a compound which is obtained from a sample extract solution and is maximum in content, and further determining the variety of detected wood.

Description

Technical field [0001] The invention belongs to the field of identification of wood species, and relates to an identification method of sandalwood pterocarpus and dye pterocarpus based on identifying characteristic compounds contained in the leachate of wood and its products. technical background [0002] Sandalwood red sandalwood (P.santalinus L.f.), also known as red sandalwood or small leaf red sandalwood, is the finest raw material for making furniture and handicrafts. Since the Ming Dynasty, it has been used as a precious material for the production of furniture or handicrafts by Chinese imperial nobles. The wood of sandalwood and red sandalwood is compact and hard, calm, dignified, elegant, and noble. Its uniqueness and prominence in the history of furniture are unmatched by other woods, and it represents the deepest cultural heritage of the Chinese. [0003] With the rapid development of my country’s economy and the continuous improvement of living standards, the demand for ...

AI Technical Summary

Problems solved by technology

[0007] The main disadvantages of using the traditional method to test the above-mentioned types of wood are: 1> The inspection time is long, the traditional method needs to be combined with the macroscopic inspection and the anatomical characteristics of the wood, and the macroscopic inspection of the 12% air-dry density test of the wood takes about 3-7 days ;The process of softening, slicing, dehydration, and sealing in the inspection of wood anatomical characteristics takes 2-7 days

2> The inspection is a destructive inspection and uses a lot of materials. The traditional method density test requires at least 3 pieces of wood with a size of 2cm×2cm×2cm; the inspection of wood anatomical characteristics requires a piece of wood with a size of 3cm×3cm×1cm. For the damage of mahogany products serious

3> For wood with similar macroscopic and anatomical structures, the misjudgment rate is high

[0011] The method adopted by the patent application number 200910049820.9 is to connect the high-efficiency gas chromatograph to the FID detector to obtain the spectrogram of wood, but the PCA projection method is used for the spectrogram identification, which is very complicated to operate. Perform peak area integration and peak area alignment on the fingerprints, but this will also cause the problem that the same tree species will be misjudged as another tree species; Both treatments will aggravate the problem that the same tree species will be misjudged as another tree species, resulting in errors in the identification of wood

The invention patent with the application number 200610149623.0 uses near-infrared spectroscopy to identify wood, but the identification of its spectrum still uses smoothing, baseline adjustment, first-order derivative, second-order derivative, multi-far scattering correction or data dimensionality reduction processing, and there are still complicated operations. , unable to overcome problems such as chromatographic peak drift and large errors

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