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Method for preparing mixed nano particle SPE column

A nanoparticle and hybrid technology, which is applied in the field of preparation of hybrid nanoparticle SPE columns, can solve problems such as not being able to meet the extraction requirements, and achieve the effect of large specific surface area and many adsorption sites

Inactive Publication Date: 2017-02-22
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, a large number of commercial solid-phase extraction columns include C18 columns, amino columns, silica gel columns, Florisil columns, and PSA columns, which cannot meet the extraction needs in some special cases.

Method used

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Embodiment Construction

[0032] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0033] The invention provides a technical solution: a method for preparing a hybrid nanoparticle SPE column, comprising the following steps:

[0034] Step S1, first fix the 6mL small column sieve on the lower end of the 6mL syringe,

[0035] Step S2, first load 0.5g of anhydrous MgSO in the syringe 4 , compacted with negative pressure vacuum;

[0036] Step S3, reload 0.5g Fe 3 o 4 Nanoparticles and 0.5g MWCNTs, vacuum compacted with negative pressure;

[0037] Step S4, reload 0.5g anhydrous MgSO 4 , compacted with negative pressure vacuum;

[0038] Step S5, finally, anhydrous MgSO in the uppermost layer 4 Press on another 6mL small column sieve plate, and vacuum compact it with negative pressure;

[0039] In step S6, the preparation of the...

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Abstract

The invention provides a method for preparing a mixed nano particle SPE column. The method comprises the following steps that S1, 6 mL of small column sieve plate is firstly fixed to the lower end of a 6mL syringe; S2, the syringe is filled with 0.5 g of anhydrous MgSO4, and compacting is carried out through negative pressure vacuum; S3, 0.5 g of Fe3O4 nano particles and 0.5 g of MWCNTs are contained, and compacting is carried out through negative pressure vacuum; S4, 0.5 g of anhydrous MgSO4 is contained again, and compacting is carried out through negative pressure vacuum; S5, finally, the other 6mL small column sieve plate presses anhydrous MgSO4 on the uppermost layer, and compacting is carried out through negative pressure vacuum; S6, preparation of the 1g / 6mL mixed nano particle SPE column is completed. Compared with the prior art, the method has the advantages that a solid phase extraction column prepared from the Fe3O4 nano particles and MWCNTs is mainly used for purifying a sample matrix extraction solution in pesticide residue detecting sample pretreatment.

Description

technical field [0001] The invention relates to a preparation method of a mixed nanoparticle SPE column, which belongs to the field of solid phase extraction columns. Background technique [0002] Solid phase extraction column (English, referred to as SPE column, or Solid Phase extraction Cartridges, referred to as SPE cartridges) is a sample pretreatment device for extraction, separation and concentration developed from chromatography columns. It is mainly used in the sample pretreatment of target compounds in various foods, agricultural and livestock products, environmental samples and biological samples. Solid phase extraction technology has been widely used in many national standards (GB / T) and industry analysis standards. [0003] The capacity of the solid phase extraction column refers to the adsorption capacity of the solid phase extraction column packing. For the solid phase extraction column based on silica gel, its capacity is generally 1-5mg / 100mg, that is, the ...

Claims

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Application Information

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IPC IPC(8): G01N1/34B01D15/10
CPCG01N1/34B01D15/10
Inventor 刘晓亮曾东强唐文伟谭辉华李雪生
Owner GUANGXI UNIV