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Needle-type solid-phase extraction filter

A technology for extracting filters and needles, applied in the field of needle-type solid phase extraction filters, can solve the problems of increasing the cost of consumables, the complexity of pretreatment, the large volume of solid phase extraction columns, and the consumption of fillers and solvents, and achieves simple training. , Wide range of application, good effect

Inactive Publication Date: 2016-11-16
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The step-by-step operation of solid-phase extraction and membrane filtration increases the cost of consumables and the complexity of pre-treatment
The volume of the existing solid-phase extraction column is large, the consumption of filler and solvent is large, and the cost of extraction operation is high

Method used

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  • Needle-type solid-phase extraction filter
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  • Needle-type solid-phase extraction filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1, a kind of needle type solid phase extraction filter, such as figure 1 As shown, the housing 5 is included, and the syringe nipple interface 6 and the pintle interface 7 communicated with the inner cavity of the housing 5 are respectively arranged on the upper and lower sides of the housing 5; The upper sieve plate 1, the solid phase extraction filler 2, the lower sieve plate 3 and the filter membrane 4; that is, the upper sieve plate 1, the solid phase extraction filler 2, the lower sieve plate 3 and the filter membrane 4 are stacked in layers without gaps.

[0033] The upper sieve plate 1 and the lower sieve plate 3 are respectively provided with sieve holes with a diameter of 100 μm. The upper sieve plate 1 is facing the nipple interface 6 of the syringe, and the filter membrane 4 is facing the pintle interface 7 . Both the syringe nipple interface 6 and the pintle interface 7 are standard straight sockets or standard threaded ports. The octadecylchlor...

Embodiment 2

[0051] Embodiment 2, the solid-phase extraction filler 2 among the embodiment 1 is changed into octadecylsilane bonded silica gel C8, silica gel, alumina, Florisil, diatomaceous earth, gac, Diol ( diol group); the particle diameter is still 120 μm, and the rest are equal to embodiment 1.

[0052] The resulting needle-type solid phase extraction filter was detected as in Experiment 1, and the quantitative parameters of phosphatidylcholine and phosphatidylethanolamine are as described in Table 2.

[0053] Table 2

[0054]

[0055]

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Abstract

The invention discloses a needle-type solid-phase extraction filter. The needle-type solid-phase extraction filter comprises a shell, and the upper side and the lower side of the shell are provided with an injector nipple connector and a pintle connector which are communicated with an inner cavity of the shell respectively; an upper sieve plate, solid-phase extraction filler, a lower sieve plate and a filter membrane are sequentially arranged in the inner cavity of the shell from top to bottom, the upper sieve plate and the lower sieve plate are each provided with sieve holes of which the hole diameters range from 95 micrometers to 105 micrometers, and the particle size of the solid-phase extraction filler ranges from 110 micrometers to 130 micrometers. According to the needle-type solid-phase extraction filter, solid-phase extraction and membrane filtration are combined in one device for the first time, the operation steps are greatly simplified, the solvent and the filler are saved, and the operation cost is reduced; the needle-type solid-phase extraction filter can be suitable for different samples and solvents and is wide in application range and good in effect.

Description

technical field [0001] The invention relates to the technical field of material separation, in particular to a needle type solid phase extraction filter. Background technique [0002] Sample pretreatment before chromatographic analysis is a crucial step. At present, Solid-phase extraction (SPE) is a very important method, which can concentrate and enrich the target components to achieve the purpose of sample purification. Compared with traditional liquid-liquid extraction, it can improve the recovery rate and more effectively separate the target component from the impurity interference, and is widely used in medicine, food, environment, chemical industry and other fields. [0003] The components eluted by solid phase extraction need to remove large particles before entering liquid chromatography and other analytical instruments for detection and analysis. The application of filter membrane separation in the field of biological and chemical analysis is the most eye-catching....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/027G01N2030/062
Inventor 沈清戴志远冯俊丽金仁耀陈康薛静
Owner ZHEJIANG GONGSHANG UNIVERSITY
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