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Rapid, simple and convenient solid phase extracting device applying functional non-woven fabric membrane

A technology of non-woven membrane and application function, which is applied in the field of fast and simple solid-phase extraction devices, and can solve problems such as easy curling, deformation, and inappropriateness

Inactive Publication Date: 2013-04-03
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the non-woven material is formed by hot pressing or melt-blowing of fibers, and does not have solid adsorption particles such as silica gel and activated carbon in traditional solid-phase extraction membranes. Phase extraction device

Method used

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  • Rapid, simple and convenient solid phase extracting device applying functional non-woven fabric membrane
  • Rapid, simple and convenient solid phase extracting device applying functional non-woven fabric membrane
  • Rapid, simple and convenient solid phase extracting device applying functional non-woven fabric membrane

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Embodiment Construction

[0011] The invention comprises a diaphragm solid-phase extractor 1, a tee pipe 2 with a conversion joint door, a waste liquid collection bottle 3, an eluent collection bottle 4, a supporting plate 5, a bracket 6, a base 7 and a syringe 8. The membrane solid-phase extractor 1 is composed of upper and lower parts in the shape of a funnel. The upper part 1a of the extractor and the lower part 1b of the extractor are fixed together by threads, and the non-woven extraction membrane is placed between the upper part 1a of the extractor and the lower part 1b of the extractor. And it is supported by the permeable sieve plate inside the lower part 1b of the extractor. The inner edge of the upper part 1a of the extractor has a circular rubber ring 1a-1. When the upper part 1a of the extractor and the lower part 1b of the extractor are fixed together, the rubber ring 1a-1 will extract The membrane is compressed to prevent liquid leakage. The lower part 1b of the solid phase extractor is c...

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Abstract

The invention relates to a rapid, simple and convenient solid phase extracting device applying a functional non-woven fabric membrane. The invention provides a solid phase extracting device which is rapid and convenient, is applicable to outdoor operation and is applicable to a disc type non-woven fabric solid phase extracting membrane. The device can be used for completing processes of activating, leaching, loading, eluting and the like in a positive-pressure sampling manner without complex equipment such as a driving device and a vacuum pump, so as to realize a field enrichment extraction process of a sample. The solid phase extracting device provided by the invention comprises a membrane solid phase extractor 1, a three-way pipe 2 with a switching valve, a waste liquid collection bottle 3, an eluant collection bottle 4, a supporting board 5, a bracket 6, a base 7 and a medical injector 8.

Description

technical field [0001] The invention relates to a fast and simple solid-phase extraction device using a functionalized non-woven membrane. Background technique [0002] More and more environmental monitoring and analysis objects are trace or even trace pollutants. Although the current instrumental analysis methods can reach trace or even ultra-trace levels, for complex samples, direct analysis is still very difficult due to the presence of matrix effects and interfering substances. difficulty. Therefore, pretreatments such as separation, enrichment and concentration before sample analysis are very important to obtain accurate final results. The solid-phase extraction technology developed in the late 1970s has a high enrichment factor for samples, a fast extraction speed, a small amount of solvent, and is easy to combine with modern analytical instruments. It is currently a widely used sample pretreatment method. When a solid phase extraction column is used to extract and e...

Claims

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Application Information

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IPC IPC(8): B01D15/00
Inventor 张环魏俊富聂月霞付昆仑
Owner TIANJIN POLYTECHNIC UNIV
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