PMID- 37140689 OWN - NLM STAT- MEDLINE DCOM- 20230508 LR - 20230508 IS - 1436-5073 (Electronic) IS - 0026-3672 (Linking) VI - 190 IP - 5 DP - 2023 May 4 TI - Highly efficient nanocomposites based on molecularly imprinted magnetic covalent organic frameworks for selective extraction of bisphenol A from liquid matrices. PG - 200 LID - 10.1007/s00604-023-05778-z [doi] AB - Highly efficient nanocomposites, hydrophobic molecularly imprinted magnetic covalent organic frameworks (MI-MCOF), have been farbricated by a facile Schiff-base reaction. The MI-MCOF was based on terephthalaldehyde (TPA) and 1,3,5-tris(4-aminophenyl) benzene (TAPB) as functional monomer and crosslinker, anhydrous acetic acid as catalyst, bisphenol AF as dummy template, and NiFe(2)O(4) as magnetic core. This organic framework significantly reduced the time consumption of conventional imprinted polymerization and avoided the use of traditional initiator and cross-linking agents. The synthesized MI-MCOF exhibited superior magnetic responsivity and affinity, as well as high selectivity and kinetics for bisphenol A (BPA) in water and urine samples. The equilibrium adsorption capacity (Q(e)) of BPA on the MI-MCOF was 50.65 mg g(-1), which was 3-7-fold higher than of its three structural analogues. The imprinting factor of BPA reached up to 3.17, and the selective coefficients of three analogues were all > 2.0, evidencing the excellent selectivity of fabricated nanocomposites to BPA. Based on the MI-MCOF nanocomposites, the magnetic solid-phase extraction (MSPE), combined with HPLC and fluorescence detection (HPLC-FLD), offered superior analytical performance: wide linear range of 0.1-100 mug L(-1), high correlation coefficient of 0.9996, low limit of detection of 0.020 mug L(-1), good recoveries of 83.5-110%, and relative standard deviations (RSDs) of 0.5-5.7% in environmental water, beverage, and human urine samples. Consequently, the MI-MCOF-MSPE/HPLC-FLD method provides a good prospect in selective extraction of BPA from complex matrices while replacing traditional magnetic separation and adsorption materials. CI - (c) 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature. FAU - Xiang, Jianxing AU - Xiang J AD - College of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China. AD - Chongqing Jiangbei Center for Disease Control and Prevention, Chongqing, 400000, China. FAU - Zhou, Peipei AU - Zhou P AD - College of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China. FAU - Mei, He AU - Mei H AD - College of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China. FAU - Liu, Xiaodong AU - Liu X AD - College of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China. FAU - Wang, Huili AU - Wang H AD - School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China. FAU - Wang, Xuedong AU - Wang X AD - School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China. zjuwxd@163.com. FAU - Li, Yanyan AU - Li Y AD - College of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China. liyan@wmu.edu.cn. AD - Department of Sports and Health, Guangzhou Sport University, Guangzhou, 510500, China. liyan@wmu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230504 PL - Austria TA - Mikrochim Acta JT - Mikrochimica acta JID - 7808782 RN - 0 (Metal-Organic Frameworks) RN - MLT3645I99 (bisphenol A) RN - 059QF0KO0R (Water) SB - IM MH - Humans MH - *Metal-Organic Frameworks MH - *Molecular Imprinting/methods MH - Water MH - *Nanocomposites MH - Magnetic Phenomena OTO - NOTNLM OT - Bisphenol A and structural analogues OT - High imprinting factor OT - Magnetic solid-phase extraction OT - Molecularly imprinted magnetic covalent organic frameworks EDAT- 2023/05/04 12:42 MHDA- 2023/05/08 06:41 CRDT- 2023/05/04 11:08 PHST- 2022/12/09 00:00 [received] PHST- 2023/04/02 00:00 [accepted] PHST- 2023/05/08 06:41 [medline] PHST- 2023/05/04 12:42 [pubmed] PHST- 2023/05/04 11:08 [entrez] AID - 10.1007/s00604-023-05778-z [pii] AID - 10.1007/s00604-023-05778-z [doi] PST - epublish SO - Mikrochim Acta. 2023 May 4;190(5):200. doi: 10.1007/s00604-023-05778-z.