Device and method for combined use of molecular imprinting solid phase microextraction and hollow fiber liquid phase microextraction, and application thereof

A technology of molecular imprinting and extraction equipment, which is applied in ion exchange treatment equipment, liquid solution solvent extraction, ion exchange, etc., can solve the problem of low selectivity of direct aqueous phase extraction, increase the enrichment multiple, and overcome low selectivity , reducing the effect of the extraction step

Inactive Publication Date: 2010-02-03
SUN YAT SEN UNIV
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  • Claims
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Problems solved by technology

[0004] The object of the present invention is to overcome the above-mentioned problems existing in the existing liquid phase microextraction and molecularly imprinted solid phase microextraction, and provide a novel molecularly imprinted solid phase microextraction-hollow fiber liquid phase microextraction combined device, It can combine the high selectivity of molecularl

Method used

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  • Device and method for combined use of molecular imprinting solid phase microextraction and hollow fiber liquid phase microextraction, and application thereof
  • Device and method for combined use of molecular imprinting solid phase microextraction and hollow fiber liquid phase microextraction, and application thereof
  • Device and method for combined use of molecular imprinting solid phase microextraction and hollow fiber liquid phase microextraction, and application thereof

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Embodiment

[0031] Example: Terbutyline molecularly imprinted solid-phase microextraction probe-hollow fiber liquid-phase microextraction device combined with high performance liquid chromatography was used to determine triazine herbicides in urine samples.

[0032] use as figure 1 The solid-phase microextraction-hollow fiber liquid-phase microextraction device combined with high-performance liquid chromatography is used to determine triazine herbicides in urine samples, and the terbutyzine molecularly imprinted solid-phase microextraction probe is made by the laboratory. The combined solid phase microextraction-hollow fiber liquid phase microextraction device of the present invention comprises: a fixed frame 10, a solid phase microextraction device 20 installed on the fixed frame 10 and an extraction bottle 60 positioned on a magnetic stirrer 80, the extraction bottle A stirring magnet 70 is also provided in the 60 . The MIP solid phase microextraction probe 40 is inserted into the holl...

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Abstract

The invention discloses a device and a method for the combined use of molecular imprinting solid phase microextraction and hollow fiber liquid phase microextraction, and the application thereof. The device consists of a solid phase microextraction device, a molecular imprinting solid phase microextraction probe, a hollow fiber membrane, an extraction bottle and a stirrer. The molecular imprintingsolid phase microextraction probe is inserted in to a hollow fiber membrane cavity containing organic solvent, fixed and then directly positioned into a sample solution to be measured for purpose of liquid-solid phase synchronous microextraction. During the microextraction, analytes permeate the hollow fiber membrane, are then enriched in the organic solvent and then undergo secondary extraction and enrichment under the action of the molecular imprinting solid phase microextraction probe. The device is simple, operates conveniently, facilitates the combined use with an analyzer, is suitable for the separation and enrichment of organics with trace amounts in complex water phase samples obtained from the fields such as environment, food, medicine, biology and the like.

Description

technical field [0001] The invention belongs to the field of analytical chemical sample pretreatment, and in particular relates to a molecular imprinted solid phase microextraction-hollow fiber liquid phase microextraction combined device, method and application, and is suitable for trace amounts in complex aqueous phase samples such as environment, food, medicine and biology. Separation and enrichment of organic matter. Background technique [0002] Liquid-phase microextraction (LPME) is a miniaturized solvent extraction technology developed on the basis of liquid-liquid extraction technology. It has high enrichment efficiency, only uses slightly upgraded organic solvents, and is environmentally friendly. The liquid phase microextraction technology with hollow fiber as the carrier makes microextraction in the porous hollow fiber cavity without direct contact with the sample solution, avoiding the loss of solvent, and because particulate impurities and some macromolecules ca...

Claims

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Application Information

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IPC IPC(8): B01D11/04B01D15/08G01N1/40
Inventor 胡玉玲李攻科王阳阳
Owner SUN YAT SEN UNIV
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