Perfluorooctane sulfonic acid molecularly imprinted polymer as well as preparation method and application thereof

A perfluorooctane sulfonic acid and molecular imprinting technology, applied in the field of separation and analysis, can solve the problems such as the specificity and adsorption performance of molecularly imprinted polymers need to be improved, and achieve universality, high sensitivity, and easy large-scale production. Effect

Active Publication Date: 2022-05-13
SHANDONG ANALYSIS & TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specificity and adsorption performance of molecularly imprinted polymers still need to be improved.

Method used

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  • Perfluorooctane sulfonic acid molecularly imprinted polymer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Preparation of Molecularly Imprinted Polymers:

[0052] (1) material preparation

[0053] Each raw material component is formulated according to the following dosage ratio: template perfluorooctane sulfonic acid 250.0mg (0.5mmol), functional monomer 1,4-benzenediacetonitrile 78mg (0.5mmol), functional monomer 1,4-bis( 95.5 mg (0.33 mmol) of 4-formylphenyl)benzene, 8.6 mg of catalyst sodium hydroxide, and 5 mL of porogen n-butanol.

[0054] (2) Preparation of molecularly imprinted polymers with template molecules

[0055] Add the above-mentioned prepared reactants into the test tube and mix evenly, ultrasonically degas for 15 minutes, seal and polymerize in a constant temperature oil bath at 105°C for 24 hours to obtain a polymer with template molecules;

[0056] (3) Preparation of molecularly imprinted polymers that remove template molecules

[0057] Grind the polymer prepared above through a 200-mesh sieve to obtain polymer particles with template molecules, elute w...

Embodiment 2

[0061] Preparation of Molecularly Imprinted Polymers:

[0062] (1) material preparation

[0063] Each raw material component is formulated according to the following dosage ratio: template perfluorooctane sulfonic acid 250.0mg (0.5mmol), functional monomer 1,4-benzenediacetonitrile 130mg (0.83mmol), functional monomer 1,4-bis( 95.5 mg (0.33 mmol) of 4-formylphenyl)benzene, 7.6 mg of catalyst sodium hydroxide, and 5 mL of porogen o-dichlorobenzene.

[0064] (2) Preparation of molecularly imprinted polymers with template molecules

[0065] Add the above prepared reactants into the test tube and mix evenly, ultrasonically degas for 10 minutes, seal and polymerize in a constant temperature oil bath at 110°C for 24 hours to obtain a polymer with template molecules;

[0066] (3) Preparation of molecularly imprinted polymers that remove template molecules

[0067] The polymer prepared above was ground through a 200-mesh sieve to obtain polymer particles with template molecules, wh...

Embodiment 3

[0071] Preparation of Molecularly Imprinted Polymers:

[0072] (1) material preparation

[0073] Each raw material component is formulated according to the following dosage ratio: template perfluorooctane sulfonic acid 250.0mg (0.5mmol), functional monomer 1,4-benzenediacetonitrile 104mg (0.67mmol), functional monomer 1,4-bis( 95.5 mg (0.33 mmol) of 4-formylphenyl)benzene, 7.5 mg of catalyst sodium hydroxide, and 5 mL of porogen o-dichlorobenzene.

[0074] (2) Preparation of molecularly imprinted polymers with template molecules

[0075] Add the above prepared reactants into the test tube and mix evenly, ultrasonically degas for 12 minutes, seal and polymerize in a constant temperature oil bath at 120°C for 18 hours to obtain a polymer with template molecules;

[0076] (3) Preparation of molecularly imprinted polymers that remove template molecules

[0077] The polymer prepared above was ground through a 200-mesh sieve to obtain polymer particles with template molecules, wh...

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Abstract

The invention belongs to the technical field of separation and analysis, and relates to a perfluorooctane sulfonic acid molecularly imprinted polymer as well as a preparation method and application thereof, and the preparation method comprises the following steps: uniformly mixing perfluorooctane sulfonic acid, 1, 4-benzene diacetonitrile, 1, 4-di (4-formyl phenyl) benzene and a pore-foaming agent to obtain a mixed solution; degassing the mixed solution, and carrying out condensation reaction in the presence of a catalyst to obtain a polymer with template molecules; and removing the template molecules from the polymer with the template molecules, and drying to obtain the polymer with the template molecules. The molecularly imprinted polymer with high specific selectivity and good adsorption performance can be prepared, and the molecularly imprinted polymer can be used for pretreatment of a sample for determining the content of perfluorooctane sulfonic acid in food, and then analysis detection and quantitative analysis are performed through a liquid chromatography-mass spectrometry system.

Description

technical field [0001] The invention belongs to the technical field of separation and analysis, and in particular relates to a preparation method and application of a molecularly imprinted polymer for detecting perfluorooctane sulfonic acid. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Perfluorinated and polyfluorinated compounds (Perfluorinated alkyl substances, PFASs) are typical non-aromatic organic pollutants, representative compounds are perfluorocarboxylic acids and perfluorosulfonic acids, because they are difficult to photolyze, hydrolyze, be degraded by microorganisms and passively Metabolism of objects has attracted people's attention. PFASs can have toxic e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08L61/00C08G16/02G01N30/06B01J20/26B01D15/08B01J20/30
CPCC08J9/28C08G16/0231G01N30/06B01J20/268B01D15/08C08J2361/00G01N2030/062
Inventor 王晓纪文华王荣雨孙成龙李丽丽韩浩月乔瞾宇李雪梅
Owner SHANDONG ANALYSIS & TEST CENT
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