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Amphiphilic acetochlor magnetic molecularly imprinted polymer and preparation method and application thereof

A technology of imprinted polymer and acetochlor, which is applied in the field of separation and analysis, achieves the effects of amphiphilicity, high specific selectivity, and improved separation efficiency

Active Publication Date: 2017-05-31
SHANDONG ANALYSIS & TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technology for selectively detecting the content of acetochlor in agricultural products using amphiphilic magnetic molecular imprinting technology has not been reported.

Method used

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  • Amphiphilic acetochlor magnetic molecularly imprinted polymer and preparation method and application thereof
  • Amphiphilic acetochlor magnetic molecularly imprinted polymer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of Amphiphilic Acetochlor Magnetic Molecularly Imprinted Polymer:

[0038] (1) material preparation

[0039] Each raw material component is formulated according to the following dosage ratio: 0.91 g of ferric oxide, 0.91 g of template acetochlor, 0.91 g of alkenyl glycoside type functional monomer (structural formula shown in formula I), 1.98 g of divinylbenzene, Cross-linking agent N,N-methylenebisacrylamide 16.17g, initiator azobisisobutyronitrile 0.08g, pore-forming agent ethanol 55.31g;

[0040] (2) Preparation of molecularly imprinted polymers with template molecules

[0041] Add the above-mentioned prepared reactants into the reaction kettle and mix evenly, ultrasonically degas for 15 minutes, then fill with nitrogen and deoxygenate for 15 minutes, seal and polymerize in a constant temperature oil bath at 60°C for 24 hours to obtain a polymer with template molecules;

[0042] (3) Preparation of molecularly imprinted polymers that remove template mole...

Embodiment 2

[0047] Preparation of Amphiphilic Acetochlor Magnetic Molecularly Imprinted Polymer:

[0048] (1) material preparation

[0049] Each raw material component is formulated according to the following dosage ratio: 0.91 g of ferric oxide, 0.91 g of template acetochlor, 0.91 g of alkenyl glycoside type functional monomer (structural formula shown in formula I), 1.98 g of 4-vinylpyridine , crosslinking agent ethylene glycol dimethacrylate 16.17g, initiator azobisisovaleronitrile 0.08g, pore forming agent ethanol 55.31g; (2) Preparation of molecularly imprinted polymer with template molecules

[0050]Add the above-mentioned prepared reactants into the reaction kettle and mix evenly, ultrasonically degas for 15 minutes, then fill with nitrogen and deoxygenate for 15 minutes, seal and polymerize in a constant temperature oil bath at 40°C for 18 hours to obtain a polymer with template molecules;

[0051] (3) Preparation of molecularly imprinted polymers that remove template molecules ...

Embodiment 3

[0056] Preparation of Amphiphilic Acetochlor Magnetic Molecularly Imprinted Polymer:

[0057] (1) material preparation

[0058] Each raw material component is formulated according to the following dosage ratio: 0.91 g of ferric oxide, 0.91 g of template acetochlor, 0.91 g of alkenyl glycoside type functional monomer (structural formula shown in formula I), 1.98 g of vinylbenzene, Joint agent ethylene glycol dimethacrylate 16.17g, initiator azobisisovaleronitrile 0.08g, pore-forming agent ethanol 55.31g;

[0059] (2) Preparation of molecularly imprinted polymers with template molecules

[0060] Add the above-mentioned prepared reactants into the reaction kettle and mix evenly, ultrasonically degas for 15 minutes, then fill with nitrogen and deoxygenate for 15 minutes, seal and polymerize in a constant temperature oil bath at 50°C for 20 hours to obtain a polymer with template molecules;

[0061] (3) Preparation of molecularly imprinted polymers that remove template molecules ...

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Abstract

The invention provides an amphiphilic acetochlor magnetic molecularly imprinted polymer and a preparation method and application thereof. Glucose is used as a structural unit, thereby synthesizing hydrophilic alkenyl glycoside type functional monomer modified with imprinting acting site. By use of a hydrophilic-lyophobic dual-functional monomer molecular imprinting technology, the amphiphilic magnetic molecularly imprinted polymer is prepared. The prepared amphiphilic magnetic molecularly imprinted polymer has high specific selectivity, has amphipathicity and good adsorptive property in a water medium, and can be used for acetochlor content determination sample pretreatment in the agricultural products, and then an extraction system for complex sample pretreatment is established through the analytic detection and quantitative analysis of a liquid chromatogram system. The method provided by the invention is simple in step, convenient for operation, and strong in practicability.

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 an amphiphilic magnetic molecular imprinted polymer for detecting acetochlor. Background technique [0002] Acetochlor herbicide is a kind of pre-emergence herbicide widely used in production at present. It has good weed control effect, but has high residual toxicity. The U.S. Environmental Protection Agency has designated acetochlor as a B-2 carcinogen . Since acetochlor herbicides have high water solubility and are easy to leaching, and the soil adsorption constant is relatively low, the amide herbicides applied to farmland can easily transfer to shallow groundwater through infiltration or enter surface water with rainwater runoff. The European Union stipulates that the maximum residue of acetochlor in agricultural products shall not exceed 0.02mg / Kg, so the analysis and detection of acetochlor herbicide is ex...

Claims

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Application Information

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IPC IPC(8): C08F222/38C08F222/14C08F212/36C08F216/14C08F226/06C08F212/08C08J9/26B01J20/26B01J20/30B01J20/28G01N30/02
CPCB01J20/268B01J20/28009C08F212/36C08F222/1006C08F222/102C08F222/385C08J9/26C08J2201/0422C08J2325/16C08J2335/00C08J2335/02G01N30/02C08F216/1416C08F226/06C08F212/08
Inventor 纪文华王晓耿岩玲刘伟王涛
Owner SHANDONG ANALYSIS & TEST CENT
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