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Solid-phase extraction apparatus

A technology of extraction device and solid phase extraction column, which is applied in the field of solid phase extraction device, can solve problems such as residue at the junction of solid phase extraction column and through hole, influence on the detection accuracy of liquid chromatography, and contamination of extracts, etc., to achieve Low cost, prevents cross-contamination, achieves simple results

Inactive Publication Date: 2012-12-26
SEPAX TECH
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Problems solved by technology

[0004] However, in the actual application process, there will be direct contact between the through hole and the hole wall between the solid phase extraction column and the vacuum box cover, resulting in residues at the junction of the solid phase extraction column and the through hole
When different extraction columns are inserted into the same through hole, cross-contamination will occur, resulting in the contamination of the extract obtained by the final solid-phase extraction, thereby affecting the accuracy of the final liquid chromatography detection

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Embodiment Construction

[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0017] Reference figure 1 A perspective view of a solid phase extraction device in a specific embodiment of the present invention is shown. A solid phase extraction column is a device used for separation, purification and enrichment of target compounds or components in liquid chromatography detection methods, usually made of medical grade polypropylene or glass. One end is a feeding port, and the sample is put into the feeding port; the other end is a column head with a small hole, the column head is inserted into one end of the hollow sleeve, and the other end of the hollow sleeve is inserted into the airtight cover of the vacuum box. And extend into the test tube set in ...

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Abstract

The invention discloses a solid-phase extraction apparatus, comprises a hollow cannula. One end of the hollow cannula is movably connected with a solid-phase extraction column while the other end protrudes into the test tube in a vacuum chamber. Through this structure, cross-contamination at the through hole on the vacuum chamber cover, which is caused by changing different solid-phase extraction column, can be prevented, improving the accuracy of the solid-phase extraction and improving the accuracy of the final liquid chromatogram detection.

Description

Technical field [0001] The invention relates to a chemical analysis instrument, more specifically to a solid phase extraction device. Background technique [0002] Solid-Phase Extraction (SPE) is a sample pretreatment technology developed in the mid-1980s. It is developed from a combination of liquid-solid extraction and liquid chromatography. It is mainly used for sample separation, purification and concentrate. Compared with the traditional liquid-liquid extraction method, the recovery rate of the analyte can be improved, the analyte and the interfering components can be separated more effectively, the sample pretreatment process is reduced, and the operation is simple, time-saving and labor-saving. Widely used in medicine, food, environment, commodity inspection, chemical industry and other fields. At present, pretreatment is a very important step in sample analysis. The effect of sample pretreatment directly affects the accuracy of the analysis results. Solid phase extrac...

Claims

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Application Information

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IPC IPC(8): B01D15/10
Inventor 瞿欢欢丁忠徐炜政黄学英
Owner SEPAX TECH
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