Plant volatile gas collection device for solid phase micro-extraction

Abstract

The invention discloses a plant volatile gas collection device for solid phase micro-extraction. The plant volatile gas collection device comprises a fixing base, a device cylinder, a motor structure,an air duct, a solid phase micro-extraction detection port, a solid phase micro-extraction device, a compressor, a ventilation opening and a low-temperature extraction device control structure, wherein the device cylinder is vertically connected to the left part of the surface at the upper end of the fixing base; the solid phase micro-extraction detection port is vertically connected to the uppermost part of the left surface inside the device cylinder; the solid phase micro-extraction device vertically penetrates through the right part of an inner cavity of the device cylinder and is in contact connection with the ventilation opening; the low-temperature extraction device control structure is movably connected to the left part of the inner cavity of the device cylinder. According to the device disclosed by the invention, the solid phase micro-extraction device of equipment can be subjected to a certain constant low temperature operation, the vapor pressure of the solvent at the extracting solvent end can be reduced, the absorptive amount and storage capacity of extracted plant volatile gases can reach expectation, and the storage stability and safety of the volatile gases are ensured.

Description

technical field [0001] The invention relates to the technical field of manufacturing gas collection devices, in particular to a plant volatile gas collection device for solid-phase microextraction. Background technique [0002] The collection and detection of plant volatile substances is the premise of studying the relationship between the production of these substances and pathogens. Common extraction techniques for plant volatile substances include: solvent extraction, steam distillation extraction, adsorption extraction, etc. At present, the methods used to collect plant volatile gases by solid-phase microextraction include: taking a chopped part of the plant sample and placing it in a closed container for solid-phase microextraction, or placing the whole plant in a closed container for solid-phase microextraction. method of microextraction. For the former method, the growth of the plant is destroyed after the plant is chopped, and the chopped plant sample cannot fully ...

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a plant volatile gas collection device for solid-phase microextraction, to solve the problem that the existing technology does not damage the environment during the collection operation of the plant volatile gas. The growth of plants, but the solid-phase microextraction device of the equipment cannot be operated at a certain constant temperature, which may cause the vapor pressure of the solute at the extraction solvent end to be too high, so that the absorption and storage capacity cannot meet expectations, so that the volatile gas cannot be guaranteed. Storage stability and safety issues

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