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QuEChERS solid-phase extraction device, preparation method of QuEChERS solid-phase extraction device and solid-phase extraction method

An extraction device and extraction technology are applied in separation methods, chemical instruments and methods, solid adsorbent liquid separation, etc., which can solve the problems of high pre-treatment labor cost, complicated operation process, difficult automatic operation and batch processing, etc., to achieve Improve the detection sensitivity and recovery rate, simplify the operation process, and avoid the effect of instrument contamination

Inactive Publication Date: 2019-10-11
SHENZHEN BIOCOMMA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although QuEChERS is a very effective sample pretreatment technology, the operation process is very complicated, especially multiple discontinuous operation steps such as shaking, centrifugation, and liquid transfer are required. It is difficult to automate operation and batch processing, and the labor cost of pretreatment is very high. high

Method used

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  • QuEChERS solid-phase extraction device, preparation method of QuEChERS solid-phase extraction device and solid-phase extraction method
  • QuEChERS solid-phase extraction device, preparation method of QuEChERS solid-phase extraction device and solid-phase extraction method
  • QuEChERS solid-phase extraction device, preparation method of QuEChERS solid-phase extraction device and solid-phase extraction method

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Experimental program
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Effect test

Embodiment 1

[0062] A new and improved QuEChERS solid-phase extraction column containing graphitized carbon solid adsorbent (referred to as SQ1 column)

[0063] (1) SQ1 column preparation (according to image 3 structural assembly shown):

[0064] Put the solid adsorbent (150mg PSA and 15mg graphitized carbon mixture) and 1.5g water-absorbing material (diatomaceous earth) filler into a 3mL column tube, and a piece of porous polypropylene is installed in the upper, middle and lower positions of the column cavity. The sieve plate separates the column tube into two upper and lower packing cavities, the lower cavity of the column tube is the adsorbent material, and the upper cavity is the water-absorbing material, and the SQ1 column is obtained according to a specific ratio.

[0065] (2) The application of SQ1 column in the detection of 12 kinds of carbamates in honey, such as Shaxiancarb:

[0066] It is used for the pretreatment and purification of samples for the detection of 12 kinds of car...

Embodiment 2

[0076] New and improved QuEChERS solid-phase extraction column containing PSA porous modified adsorbent (denoted as SQ2 column)

[0077] (1) Preparation of PSA porous modified adsorbent:

[0078] Thermoplastic polymer resin: UHMWPE, molecular weight about 3.5 million, particle size 80-120 mesh.

[0079] Solid adsorbent: PSA, particle size is 60 μm, pore size is

[0080] 1) Add UHMWPE 70% and PSA 30% in turn to the container, and mix well to obtain spare raw materials;

[0081] 2) Using an aluminum mold with several holes, the diameter of the hole is 9.1mm, and the height is 5.2mm. The spare raw materials are evenly added to the hole, and the compression is shaken;

[0082] 3) Sintering at 165° C. for 25 minutes and then cooling to obtain a PSA porous modified adsorbent material.

[0083] (2) Preparation of SQ2 column (according to Figure 4 structural assembly shown):

[0084] The modified PSA solid adsorbent material and 1.5g water-absorbent material (modified polyviny...

Embodiment 3

[0095] New and improved QuEChERS solid-phase extraction column containing PEP porous modified adsorbent (denoted as SQ3 column)

[0096] (1) Preparation of PEP porous modified adsorbent:

[0097] Thermoplastic polymer resin: UHMWPE, molecular weight about 2.8 million, particle size 70-100 mesh.

[0098] Solid adsorbent: PEP, with a particle size of 70 μm and a pore size of

[0099] 1) Add UHMWPE 75% and PEP 25% in sequence in the container, and mix well to obtain spare raw materials;

[0100] 2) Using an aluminum mold with several holes, the diameter of the hole is 9.1mm, and the height is 5.2mm. The spare raw materials are evenly added to the hole, and the compression is shaken;

[0101] 3) Sintering at 180° C. for 25 minutes and then cooling to obtain a PEP porous modified adsorbent material.

[0102] (2) Preparation of Q3 column (according to Figure 4 structural assembly shown):

[0103] The modified PEP adsorbent material and 1.0g water-absorbent material (diatomac...

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Abstract

The invention discloses a QuEChERS solid-phase extraction device, a preparation method of the QuEChERS solid-phase extraction device and a solid-phase extraction method. The QuEChERS solid-phase extraction device comprises a carrier device, a water absorption material and an adsorbent material, wherein the water absorption material and the adsorbent material are successively placed in the carrierdevice up and down, the water absorption material is selected from one or more of kieselguhr and super absorbent resin, and the adsorbent material is selected from one or more of silica gel substrates, non-silica gel substrates, polymer substrates and porous modified adsorbents. According to the QuEChERS solid-phase extraction device, the operation process is simplified, high throughput and automation of sample pretreatment are more easily achieved, endogenous and exogenous substrate interfering substances in a complex sample can also be effectively removed, and instrument pollution is effectively avoided; the detection sensitivity and recovery rate of a target are greatly improved, and the device can be widely applied to the field of pretreatment of samples of biology, medicine, environments, food, commodity inspection, forensic science and the like.

Description

technical field [0001] The invention relates to the field of sample pretreatment, in particular to a QuEChERS solid-phase extraction device, a preparation method thereof and a solid-phase extraction method. Background technique [0002] QuEChERS is the abbreviation of Quick (fast), Easy (simple), Cheap (cheap), Effective (effective), Rugged (reliable / durable) and Safe (safe). A sample pretreatment method formed by the combination of dispersive solid phase extraction and purification phases. [0003] As early as 2003, it was first published by Michelangelo Anastassiades, Steven Lehotay, etc. After that, Steven Lehotay wrote the US Department of Agriculture General Standard AOAC. The national standard GB 23200.113 has been passed. QuEChERS technology has become a global standard sample pretreatment method for the detection of pesticide residues in fruits and vegetables because of its advantages of convenience, high efficiency, less solvent usage, less pollution, and low pric...

Claims

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Application Information

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IPC IPC(8): B01D15/10B01D15/42
CPCB01D15/10B01D15/426
Inventor 梁慧明陈高明张娟卢鹏飞余飞胡玉梅
Owner SHENZHEN BIOCOMMA TECH
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