caa a22 4500 445879696 CHVBK 20180317145538.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s00604-010-0461-7 doi (NATIONALLICENCE)springer-10.1007/s00604-010-0461-7 Preparation and phenol-recognizing ability of a poly(methacrylic acid) molecular imprint on the surface of a silica gel [Elektronische Daten] [Zhiguo Yuan, Youzhi Liu, Fuqiang An] Molecularly imprinted solid phase extraction is an excellent tool for the preconcentration of trace analytes. We report on the preparation of such a material by firstly graft-polymerizing methacrylic acid onto the surface of silica gel particles, and then imprinting it by using phenol as a template and ethylene glycol diglycidyl ether as a crosslinker. The binding and recognition of phenol were examined by static methods. The binding capacity at saturation is 160mg·g−1 in 9h at pH 6. The selectivity coefficients relative to o-cresol and chlorophenol are 22 and 23, respectively. The pH value has a large effect. Adsorbed phenol can be eluted easily from the imprint with diluted sodium hydroxide solution, and the material is reusable. Figure Binding isotherms of NIP-PMAA/SiO2 and MIP-PMAA/SiO2 towards phenol, o-cresol and chlorophenol. The binding amount of NIP-PMAA/SiO2 towards three species is equivalent nearly. However, it would be quite different after imprinted with phenol. The binding amount of MIP-PMAA/SiO2 towards phenol doesn't change, but the binding amount of MIP-PMAA/SiO2 towards o-cresol and chlorophenol is much lower than that towards phenol. The facts mentioned above prove that MIP-PMAA/SiO2 has high affinity, high recognition ability and special selectivity for phenol. This result shows that the surface molecular imprinting technique is feasible and successful Springer-Verlag, 2010 Surface molecular imprinted polymer nationallicence Recognizing ability nationallicence Reusability property nationallicence Phenol nationallicence Silica gel nationallicence Yuan Zhiguo School of Chemical Engineering and Environment, North University of China, 030051, Taiyuan, China aut Liu Youzhi School of Chemical Engineering and Environment, North University of China, 030051, Taiyuan, China aut An Fuqiang School of Chemical Engineering and Environment, North University of China, 030051, Taiyuan, China aut Microchimica Acta Springer Vienna 172/1-2(2011-02-01), 89-94 0026-3672 172:1-2<89 2011 172 604 https://doi.org/10.1007/s00604-010-0461-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-010-0461-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yuan Zhiguo School of Chemical Engineering and Environment, North University of China, 030051, Taiyuan, China aut NATIONALLICENCE 700 1- Liu Youzhi School of Chemical Engineering and Environment, North University of China, 030051, Taiyuan, China aut NATIONALLICENCE 700 1- An Fuqiang School of Chemical Engineering and Environment, North University of China, 030051, Taiyuan, China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 172/1-2(2011-02-01), 89-94 0026-3672 172:1-2<89 2011 172 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer