Preparation of molecularly imprinted polymers for heptachlor: An organochlorine pesticide

K. Singh, A. Pasha, B. A. Rani
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引用次数: 8

Abstract

Background: Molecular Imprinting technology is a promising technique for creating recognition elements for selected compounds and has been successfully applied for synthesis of Environmental pollutants such as pesticides. Aim: Synthetic binding polymers were prepared by non-covalent imprinting technique using bulk polymerization method for heptachlor, which is an organochlorine pesticide. Materials and Methods: Three functional monomers and 2 cross-linkers were used for molecular imprinting. The molecularly imprinted polymers (MIPs) obtained were subsequently characterized in detail with rebinding investigation using batch rebinding. The results indicate that the imprinting was successfully done for heptachlor using methacrylic acid (MAA) as functional monomer and ethylene glycol dimethacrylate (EDMA) as cross-linker. Results: The affinity order from rebinding results for the 3 polymers is heptachlor-co-MAA-co-EDMA > heptachlor-co-4-VP-co-DVB > heptachlor-co-Styrene-co-DVB. UV-visible spectrophotometric study for interaction of heptachlor with MAA in pre-polymerization mixture suggests the formation of H-bonding also contributing to the formation of good imprint. Conclusion: Molecular Imprinted polymers can be used as detection systems and as clean up materials for pesticides.
七氯农药分子印迹聚合物的制备
背景:分子印迹技术是一种很有前途的化合物识别元件的合成技术,已成功应用于农药等环境污染物的合成。目的:采用本体聚合法,采用非共价印迹技术合成七氯有机氯农药的结合聚合物。材料与方法:采用3种功能单体和2种交联剂进行分子印迹。获得的分子印迹聚合物(MIPs)随后通过批重结合研究进行了详细的表征。结果表明,以甲基丙烯酸(MAA)为功能单体,乙二醇二甲基丙烯酸酯(EDMA)为交联剂,成功地印迹了七氯。结果:3种聚合物的重结合亲合力顺序为:七氯-co- maa -co- edma >七氯-co-4- vp -co- dvb >七氯-co-苯乙烯-co- dvb。紫外可见分光光度法对预聚合混合物中七氯与MAA相互作用的研究表明,氢键的形成也有助于形成良好的印记。结论:分子印迹聚合物可作为农药的检测系统和清洁材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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