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Inventors: Wu JA, Wan LS, Yang YF, Zeng QB
Patent Title: Preparation method and application of sulfonylureas herbicide molecular engram separating film
Publication date: 2008
Publication number: CN101185856

Abstract: The invention discloses a preparation method of a sulfonylurea herbicide molecular imprinting separation membrane, which comprises the following steps: (1) mixing a polymeric monomer, alkenyl metalloporphyrin, an auxiliary function monomer, an initiator and a solvent to conduct a thermal-initiation reaction to get a copolymer containing metalloporphyrin; (2) dissolving the copolymer and template molecule into N, N-dimethylformamide to form a casting solution and preparing a unsymmetrical membrane with the method of immersion precipitation phase inversion; (3) washing off the template molecule in the unsymmetrical membrane and drying to get the sulfonylurea herbicide molecular imprinting separation membrane. The performance of the molecular imprinting separation membrane prepared by the method of the invention is obviously improved; the molecular bolt separation membrane has the advantages of high selectivity, fast recognition speed, easy maintain of the recognition ability and so on; and the molecular bolt separation membrane has practical value in terms of testing, separating and purifying a trace of sulfonylurea herbicide in environmental samples.
URL: http://v3.espacenet.com/publicationDetails/biblio?DB=EPODOC&adjacent=true&locale=en_gb&FT=D&date=20080528&CC=CN&NR=101185856A&KC=A

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