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Reference type: Journal
Authors: He J, Tang HZ, You LQ, Zhan HJ, Zhu J, Lu K
Article Title: Fragment-imprinted microspheres for the extraction of sulfonamides.
Publication date: 2013
Journal: Microchimica Acta
Volume: 180
Issue: (9-10)
Page numbers: 903-910.
DOI: 10.1007/s00604-013-1011-x

Abstract: Fragment-imprinted microspheres (FIMs) were synthesized by suspension polymerization of 4-sulfa-6-chloropyrimidine (the template), methacrylic acid and styrene (the mixed functional monomers), divinylbenzene (the crosslinker), and azobisisobutyronitrile (the initiator). The optimum conditions were obtained by an orthogonal experiment. After removal of the templates, the microspheres serve as a material to fairly specifically bind sulfonamides, the absorption capacity being 6.32 mg g-1, whereas the absorption by non-imprinted microspheres is 1.68 mg g-1. A method was worked out for the simultaneous determination of five sulfonamides by solid phase extraction (using the FIMs) coupled to HPLC, and applied to analyze milk samples. The recoveries are within 87.6 and 96.5 %, with relative standard deviations between 1.25 and 2.89 %
Template and target information: 4-sulfa-6-chloropyrimidine, sulfonamides
Author keywords: 4-Sulfa-6-Chloropyrimidine, Fragment-Imprinted Microspheres, suspension polymerization, sulfonamides

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