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Preparation and application method of carbon nanotube-based magnetic bactericide molecularly imprinted polymer

A carbon nanotube and molecular imprinting technology, applied in the field of separation and analysis, can solve the problems of low extraction efficiency and complexity of target substances, and achieve the effects of wide monomer selection range, good controllability and good selectivity.

Active Publication Date: 2018-01-12
NORTHEAST FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is often due to the phenomenon of "solution polymerization", which makes the irregular size and shape of the particles and the residual template molecules further lead to low extraction efficiency of the target object, and the process of separating the polymer from the solution requires suction filtration or centrifugation step, more complex

Method used

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  • Preparation and application method of carbon nanotube-based magnetic bactericide molecularly imprinted polymer
  • Preparation and application method of carbon nanotube-based magnetic bactericide molecularly imprinted polymer
  • Preparation and application method of carbon nanotube-based magnetic bactericide molecularly imprinted polymer

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Embodiment 1

[0026] Applying the content of the present invention, abamectin is used as a template molecule to prepare a carbon nanotube-based magnetic bactericide molecularly imprinted polymer.

[0027] 1. The preparation of the carbon nanotube-based magnetic bactericide molecularly imprinted polymer with avermectin as the template molecule is specifically completed in the following steps:

[0028] 1. Disperse 1 g of carbon nanotubes into 100 mL of concentrated nitric acid, stir and reflux at 90°C for 5 hours, cool to room temperature after the reaction is complete, filter and wash with distilled water until neutral, and vacuum-dry at 60°C to constant weight to obtain activated carbon nanotubes;

[0029] 2. Disperse 1 g of activated carbon nanotubes obtained in step 1 into 100 mL of thionyl chloride, stir and reflux at 85° C. for 24 hours, and evaporate to dryness with a rotary evaporator to obtain acid-chlorinated carbon nanotubes;

[0030] 3. Disperse 1 g of the acid-chlorinated carbon...

Embodiment 2

[0037] The application method of the carbon nanotube-based magnetic bactericide molecularly imprinted polymer is specifically completed according to the following steps:

[0038] 1. Extraction: Take a centrifuge tube, add 1g of the fish sample to be determined, 5mL of acetonitrile as the extraction solvent, transfer the centrifuge tube to a shaker and vibrate for 30min, put it in a centrifuge and centrifuge at a speed of 5000rpm for 5min, and separate the obtained The supernatant (extract) was transferred to another centrifuge tube;

[0039] 2. Separation: Add 20 mg of carbon nanotube-based magnetic bactericide molecularly imprinted polymer to the above-mentioned centrifuge tube containing the extract, shake and absorb with a shaking table at a shaking speed of 180 rpm for 30 min, separate using a magnet and pour off the supernatant to obtain Carbon nanotube-based magnetic fungicide molecularly imprinted polymer adsorbed on abamectin;

[0040] 3. Elution: Add 1mL of acetic ac...

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Abstract

The invention provides preparation and application methods of a carbon-nanotube-base magnetic bactericide molecularly-imprinted polymer, relating to preparation and application methods of bactericide molecularly-imprinted polymers. The invention aims to solve the problems of time consuming, high organic solvent consumption and low selectivity in the sample pretreatment technique in the existing bactericide residue analysis, the problem of the solution polymerization phenomenon in the existing bactericide molecularly-imprinted polymer synthesis process, and the problem that the solution separation process needs the vacuum filtration or centrifuging step. The preparation method comprises the following steps: 1. activating carbon nanotubes; 2. hydroxylating the carbon nanotubes; 3. preparing the magnetic carbon nanotubes; 4. preparing the initiator / magnetic carbon nanotubes; and 5. carrying out polymerization reaction. The application method comprises the following steps: adding the carbon-nanotube-base magnetic bactericide molecularly-imprinted polymer into a bactericide-containing sample solution, and sequentially carrying out oscillation, magnetic resolution and elution.

Description

technical field [0001] The invention belongs to the technical field of separation and analysis, and in particular relates to a preparation and application method of a bactericide molecularly imprinted polymer. Background technique [0002] Fungicides are a class of pesticides used to prevent and control animal and plant diseases caused by various pathogenic microorganisms, and have been used in agriculture and animal husbandry for a long time. However, some fungicides will remain in organisms, and if used improperly, they will have a certain impact on human health. Therefore, the analysis and detection of fungicides is particularly important. The most commonly used method in the prior art is liquid chromatography, which mainly uses liquid chromatography to separate compounds, and then uses the ultraviolet or fluorescence characteristics of compounds to carry out qualitative and quantitative identification, especially liquid chromatography-fluorescence detection method, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F220/56C08F222/14C08J9/26B01J20/26B01J20/30B01D15/08
CPCB01D15/08B01J20/268B01J2220/4812B01J2220/58C08F292/00C08J9/26C08J2351/10C08F220/56C08F222/14
Inventor 陈立钢游晓晓方涛
Owner NORTHEAST FORESTRY UNIVERSITY
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