Method for quickly and nondestructively identifying pterocarpus santalinus mortise and tenon products on basis of fingerprint spectra

Abstract

The invention relates to a method for quickly and nondestructively identifying pterocarpus santalinus mortise and tenon products on the basis of fingerprint spectra. Quartz fibers with coated extractstationary phase are inserted into mortise and tenon joints of the pterocarpus santalinus products by the aid of breakage-proof stainless steel slim tubes in solid-phase micro-extraction direct extraction modes, are taken out of the mortise and tenon joints after being balanced and then are inserted into gas-phase chromatography sample inlets, and samples can be completely injected after thermal desorption is carried out. A batch of total ion current chromatograms of known different batches of pterocarpus santalinus sample extract is imported into similarity evaluation software, multi-point correction and automatic matching are carried out, the pterocarpus santalinus reference fingerprint spectra are established, the similarity is combined with the retention time and characteristic fragment ions, and accordingly the authenticity of the pterocarpus santalinus mortise and tenon products can be authenticated. The method has the advantages that the samples can be nondestructively taken inthe solid-phase micro-extraction direct extraction modes, and accordingly the pterocarpus santalinus mortise and tenon products can be nondestructively detected in the real sense; the method is environmentally friendly, can be quickly and easily implemented and has irreplaceable social significance and an irreplaceable economic value in the aspect of nondestructive pterocarpus santalinus product authenticity authentication, and solvents can be omitted.

Description

technical field [0001] The invention relates to the technical field of identification of wood mortise and tenon products, in particular to a method for quickly and nondestructively identifying sandalwood and red sandalwood mortise and tenon products based on fingerprints. Background technique [0002] The soul of traditional Chinese mahogany products is the mortise and tenon structure, which has the advantages of being durable, easy to disassemble and transport, easy to maintain, high quality and not easy to crack, so most mahogany products use mortise and tenon structure. [0003] Sandalwood red sandalwood (Pterocarpus santalinus), commonly known as "small leaf sandalwood", is one of the most valuable wood species in the world. Sandalwood red sandalwood is mostly produced in tropical and subtropical virgin forests. The red sandalwood produced in Mysore, India and Myanmar is the most excellent. Sandalwood red sandalwood is a high-quality red sandalwood. It has a prominent f...

AI Technical Summary

Problems solved by technology

[0004] At present, there are mainly two types of identification of sandalwood and red sandalwood products. One is the traditional manual identification method based on wood characteristics. The identification of wood species requires experts to complete, but there are still subjective uncertainties; ③The identification results are difficult to go deep into the "species" level for identification; ④ The identification takes a long time, etc.

One is the identification method based on chemical composition, among which near-infrared and micro-destructive gas chromatography are widely used to identify mahogany species, but both of them need to be sampled, which will cause different degrees of appearance damage to the product. In addition, solvent extraction is used. It will cause harm to the human body, and the process is cumbersome, which is not conducive to the control of enterprise costs and the improvement of efficiency

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