Solid-phase micro-extraction device

Abstract

The invention provides a solid-phase micro-extraction device which comprises a handle and an elastic collet, wherein the elastic collet is arranged at one end of the handle and is linked with the handle; when the elastic collet is opened by operating the handle, an extraction head can be taken out from or put into the elastic collet; and when the elastic collet is shrunk by operating the handle, the extraction head is clamped by the elastic collet, so that the extraction head, the elastic collet and the handle are fixed into a whole. According to the solid-phase micro-extraction device, the elastic collet is arranged between the handle and the extraction head, so that the extraction head can be replaced. The extraction head of the solid-phase micro-extraction device can be replaced, so that the time spent on waiting the activation of the extraction head can be shortened, and the testing efficiency is increased. Furthermore, if the extraction head is required to be recycled, the extraction head is only required to be activated separately; and compared with an extraction device provided with a fixed extraction head in the prior art, the solid-phase micro-extraction device enables a relatively large quantity of single extraction heads to be activated by an activation device with a certain volume.

Description

technical field [0001] The invention relates to the technical field of extraction devices, in particular to a solid phase microextraction technology. Background technique [0002] Solid-phase microextraction technology is a sample pretreatment technology that emerged in the 1990s. It is a micro-extraction separation technology developed on the basis of solid-phase extraction technology. It is a collection, extraction, concentration and sample injection. A new technique for solvent-free sample microextraction. This technology was first developed and researched by the research group of Professor Pawliszyn of the University of Waterloo in Canada in 1989, which belongs to the non-solvent selective extraction method. [0003] Compared with solid-phase extraction technology, solid-phase microextraction is simple to operate, easy to carry, and low in cost, which overcomes the disadvantages of low recovery efficiency and easy blockage of adsorbent channels in solid-phase extraction...

AI Technical Summary

Problems solved by technology

In order to avoid cross-contamination, it often takes several hours to activate the extraction head before each use, which directly affects the test efficiency

In addition, during the activation of the extraction head, due to the volume limitation of the activation device, one activation device can only activate two solid-phase microextraction devices with extraction heads at a time.

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