Inventors: Fan J, Wei YF, Wang JJ, Wu CL, Shi QZ, Liang F, Shao XJ, Shi HL, Sun YP, Guo YH, Shen YB
Patent Title: Preparing method of diphenylguanidine molecular imprinting solid phase extractant
Publication date: 2008
Publication number: CN101224416

Abstract: A preparation method of a diphenyl guanidine molecular imprint solid-phase extracting agent relates to a preparation method of solid-phase extracting agent; the invention aims at providing a preparation method of molecular imprint solid-phase extracting agent which can effectively extract diphenyl guanidine from an enriched environmental sample. The technical proposal of the invention has the key points that: (1) diphenyl guanidine, methacrylic acid and ethylene glycol dimethacrylate are blended with the mol ratio of 1:4:20; the diphenyl guanidine is firstly added into a chloroform for dissolving, then the methacrylic acid is added to act with the diphenyl guanidine completely, after that, the ethylene glycol dimethacrylate and an azoisobutyronitrile are added in sequence, and the solution is communicated with nitrogen by ultrasonic and heated up to 55-60 DEG C for polymerization reaction; (2) the block polymer is prepared into a granular polymer which is soxhlet extracted by 10% of glacial acetic acid/ methanol solution; (3) the soxhlet extract product is washed by methanol until the washing agent shows neutral, and the diphenyl guanidine molecular imprint solid-phase extracting agent of the invention is obtained after vacuum drying. The invention is used for extracting diphenyl guanidine from an enriched environmental sample.
URL: http://v3.espacenet.com/publicationDetails/biblio?DB=EPODOC&adjacent=true&locale=en_gb&FT=D&date=20080723&CC=CN&NR=101224416A&KC=A