title: Barbell-shaped stir bar sorptive extraction using dummy template molecularly imprinted polymer coatings for analysis of bisphenol A in water.
abstract: This study reports the development of a novel dummy template molecularly imprinted polymer (MIP)-coated barbell-shaped stir bar. The MIP stir bar coatings were prepared by using 2,2-bis(4-hydroxyphenyl)butane (BPB), 4,4'-dihydroxydiphenylmethane (BPF), 4-tert-butylphenol (PTBP), and tetrabromobisphenol A (TBBA) as dummy templates using a capillary in situ polymerization method. Uniform coatings can be prepared controllably. The method is simple, easy, and reproducible. The barbell-shaped stir bar was developed by using medical silicone tubes as wheels. The wheels could be removed and reinstalled when necessary; therefore, the barbell-shaped stir bar was easy to disassemble and reassemble. The novel MIP-coated stir bar showed good selectivity for the target analyte, bisphenol A (BPA). The established method is selective and sensitive with a lower detection limit for BPA of 0.003 μg/L. The dummy template MIP-coated stir bar is suitable for trace BPA analysis in real environmental water samples without template leakage. The novel stir bar can be used at least 100 times.
authors.affiliation: Department of Chemistry, Faculty of Science, Kunming University of Science and Technology, Kunming, 650500, China.
authors.forename: Ruimei
authors.initials: R
authors.lastname: Liu
authors.affiliation: Department of Chemistry, Faculty of Science, Kunming University of Science and Technology, Kunming, 650500, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Feng
authors.affiliation: Department of Chemistry, Faculty of Science, Kunming University of Science and Technology, Kunming, 650500, China.
authors.forename: Guolin
authors.initials: G
authors.lastname: Chen
authors.affiliation: Department of Chemistry, Faculty of Science, Kunming University of Science and Technology, Kunming, 650500, China.
authors.forename: Zhimin
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Department of Chemistry, Faculty of Science, Kunming University of Science and Technology, Kunming, 650500, China. xuzgkmust@gmail.com.
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Xu
keywords: Barbell-shaped stir bar; Bisphenol A; Dummy template molecularly imprinted; Stir bar sorptive extraction