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Magnetic field-induced preparation method of molecularly-imprinted magnetic enrichment material of trace quantity of chlorophenol pollutant molecules in seawater

A technology of molecular imprinting and polymer materials, which is applied in the direction of water pollutants, seawater treatment, chemical instruments and methods, etc., can solve the problems of application limitations, difficult separation of samples and substrates, etc., achieve easy operation and improve system dynamic stability , Ease of elution and separation

Inactive Publication Date: 2014-11-05
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Abstract
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  • Application Information

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Problems solved by technology

However, this kind of material requires high-speed centrifugation to achieve solid-liquid separation, and its application is limited to a certain extent. Therefore, it is very necessary to develop a new type of composite material to overcome the difficulty of separating the sample from the matrix.

Method used

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  • Magnetic field-induced preparation method of molecularly-imprinted magnetic enrichment material of trace quantity of chlorophenol pollutant molecules in seawater
  • Magnetic field-induced preparation method of molecularly-imprinted magnetic enrichment material of trace quantity of chlorophenol pollutant molecules in seawater
  • Magnetic field-induced preparation method of molecularly-imprinted magnetic enrichment material of trace quantity of chlorophenol pollutant molecules in seawater

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Embodiment 1

[0038] (1) Add 2mL methyl methacrylate, 8mL glycidyl methyl methacrylate and 0.5mL divinylbenzene to a 100mL three-necked bottle successively; ultrasonic dispersion at 25°C (ultrasonic dispersion involved in the present invention is an industrial Conventional ultrasonic dispersion method, such as using ultrasonic power: 150-1500W, ultrasonic frequency: 20--40KHz, power supply: 220 / 380V50HZ ultrasonic conditions can achieve ultrasonic dispersion) for 1 minute, so that the reaction system is uniformly dispersed; slowly add the concentration of 0.2 mol / L ferrous sulfate aqueous solution 10mL, 0.5g initiator benzoyl peroxide was dissolved in 10mL hot ethanol, and added dropwise to the reaction system while stirring. A NdFeB magnet with a magnetic energy product of 40MGOe and a coercive force of 20kOe was used to achieve magnetic field induction, 10mL of 30% hydrogen peroxide was added dropwise, and the pH value of the reaction system was adjusted to 11 with 10% aqueous sodium hydro...

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Abstract

The invention discloses a magnetic field-induced preparation method of a molecularly-imprinted magnetic enrichment material of trace quantity of chlorophenol pollutant molecules in seawater. The preparation method comprises that under magnetic field induction, an epoxy group-functionalized magnetic polymer is prepared by suspension polymerization and in-situ oxidation, a chlorophenol environmental pollutant polyamine template molecule is obtained by an intermolecular hydrogen bonding self-assembling technology, an amino-functionalized magnetic molecularly-imprinted composite material bonding with the template molecule is prepared under magnetic field induction, and in the presence of an acid / alcohol extractant, through pH adjustment, the template molecule is eluted and the chlorophenol molecule-imprinted magnetic composite material is obtained. The preparation method has simple processes and a low cost and realizes uniform particle size distribution and stable properties of the desired product. The molecularly-imprinted magnetic enrichment material can realize high-efficiency and high-selectivity adsorption and removal of trace quantity of chlorophenol pollutants in seawater and can be used for base dispersion-magnetic solid phase extraction detection of trace quantity of chlorophenol pollutants in seawater.

Description

technical field [0001] The invention relates to a preparation method and application technology of a molecularly imprinted magnetic enrichment material with a core-shell structure capable of efficiently enriching and removing trace chlorophenol pollutants in seawater, specifically molecularly imprinted ferroferric oxide magnetic polymer Methods of preparation of composite materials. The molecularly imprinted magnetic polymer composite material prepared by the present invention can efficiently and selectively adsorb and remove trace chlorophenol pollutants in seawater, and on this basis, the matrix dispersion-magnetic solid phase extraction technology can be established for sample pretreatment, It is used for the enrichment and detection of trace chlorophenol pollutants in seawater. Background technique [0002] Chlorophenols environmental persistent pollutants have attracted more and more attention from researchers because of their strong bioaccumulation toxicity and "three...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/26C08F220/32C08F220/14C08F212/08C08F212/36C08F220/06C08F220/18C08F212/12C08K3/22B01J20/26B01J20/28B01J20/30C02F1/28C02F101/34C02F101/36C02F103/08
Inventor 沈昊宇陈扬张佳丽谢晟瑜杨军胡美琴董新艳夏清华
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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