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

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...

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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.

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