Method for detecting camellia nitidissima chi oil type volatile ingredients

Abstract

The invention relates to the field of a solid phase extraction-gas chromatography-mass spectrometry combined technology and provides a method for detecting camellia nitidissima chi oil type volatile ingredients. The method comprises the following steps: detecting the camellia nitidissima chi oil type volatile ingredients by a solid phase extraction adsorption-gas chromatography-mass spectrometry combined process, wherein the solid phase extraction is headspace stir bar solid phase adsorption extraction, and a stir bar is coated with a two-dimensional or three-dimensional graphene-polymer coating; the materials of the graphene-polymer coating include graphene and graphene modified materials, and the graphene modified materials include graphene oxide, graphene-polyethylene glycol dimethacrylate, graphene-polypyrrole, graphene-polymethyltrimethoxy silane and a graphene nanomaterial. The method has the characteristics of accurate detection, high sensitivity, good selective adsorption effect and long service life.

Description

technical field [0001] The invention relates to the technical field of solid-phase extraction-gas chromatography-mass spectrometry, in particular to a method for detecting volatile components of Camellia japonica oil. Background technique [0002] Camellia Camellia belongs to the family Theaceae and Camellia genus, and it is twin sisters with Tea, Camellia, Camellia oleifera, Camellia oleifera, and Camellia sasana. The flowers of Camellia japonica are golden yellow, dazzling, as if coated with a layer of wax, crystal clear and oily, as if translucent. Camellia chrysalis grows solitary in the leaf axils. When the flowers bloom, there are cup-shaped, pot-shaped or bowl-shaped flowers, which are delicate and colorful, beautiful and elegant. Previously, people had not seen species with golden flowers. In 1960, Chinese scientists first discovered a golden yellow camellia in Nanning, Guangxi, which was named Camellia Camellia. The oriental magic tea, which is called miraculous ...

AI Technical Summary

Problems solved by technology

The surface of the extraction fiber stirring rod used in traditional stirring rod solid phase microextraction is coated with a thin layer of adsorption polymer materials, mostly perfluorinated resin, polypyrrole, methyl vinyl siloxane, epoxy-polydimethylsiloxane, etc. Oxane, etc. These materials are often expensive and fragile in texture. In actual processing, it is necessary to ensure the adsorption performance by thickening the coating. The thickening of the coating will not only reduce the detection sensitivity, but also improve the actual performance of the stirring rod coating. The probability of fracture during operation, when analyzing some substances such as plant active ingredients, there will also be the phenomenon of sample residue in the solid phase extraction coating material or matrix interference, which seriously affects the accuracy of detection