PMID- 34823860 OWN - NLM STAT- MEDLINE DCOM- 20220118 LR - 20220118 IS - 1873-3573 (Electronic) IS - 0039-9140 (Linking) VI - 239 DP - 2022 Mar 1 TI - Magnetic molecularly imprinted polymer for the simultaneous selective extraction of phenoxy acid herbicides from environmental water samples. PG - 123082 LID - S0039-9140(21)01004-3 [pii] LID - 10.1016/j.talanta.2021.123082 [doi] AB - A selective magnetic molecularly imprinted polymer (MMIP) was synthetized with 4-chloro-2-methylphenoxyacetic acid as template and 4-vinylpiridine as monomer in presence of vinylized magnetite nanoparticles. Scanning electron microscopy, nitrogen adsorption-desorption isotherms, Fourier transform infrared spectrometry and vibrating sample magnetometry were applied to characterize the resulting material. The synthesized MMIP was applied as sorbent in magnetic molecularly imprinted solid-phase extraction (MMISPE) for selective extraction of a mixture of the five herbicides 4-chloro-2-methylphenoxyacetic acid (MCPA), 4-(4-chloro-2-methylphenoxy)butyric acid (MCPB), mecoprop (MCPP), fenoxaprop (FEN) and haloxyfop (HAL). Several parameters affecting the extraction conditions were optimized to achieve the best extraction performance. The best MMISPE combined with HPLC-DAD gave detection and quantification limits between 0.33 and 0.71 mug L(-1) and 1.1-2.4 mug L(-1), respectively, were obtained. The precision of the whole method provided RSD values below 7.3%, and the accuracy was demonstrated by the analysis of several water samples of different origins, with recoveries ranged from 77 to 98%. Moreover, a remarkable re-usability of the MMIP sorbent, more than 65 uses without losses in extraction capacity, was obtained. CI - Copyright (c) 2021 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Meseguer-Lloret, Susana AU - Meseguer-Lloret S AD - Institut d'Investigacio per a la Gestio Integrada de Zones Costaneres, Campus de Gandia, Universitat Politecnica de Valencia, C/ Paranimf 1, 46730, Grao de Gandia, Valencia, Spain. Electronic address: sumello@qim.upv.es. FAU - Torres-Cartas, Sagrario AU - Torres-Cartas S AD - Institut d'Investigacio per a la Gestio Integrada de Zones Costaneres, Campus de Gandia, Universitat Politecnica de Valencia, C/ Paranimf 1, 46730, Grao de Gandia, Valencia, Spain. FAU - Gomez-Benito, Carmen AU - Gomez-Benito C AD - Institut d'Investigacio per a la Gestio Integrada de Zones Costaneres, Campus de Gandia, Universitat Politecnica de Valencia, C/ Paranimf 1, 46730, Grao de Gandia, Valencia, Spain. FAU - Herrero-Martinez, Jose Manuel AU - Herrero-Martinez JM AD - Department of Analytical Chemistry, University of Valencia, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain. Electronic address: jmherrer@uv.es. LA - eng PT - Journal Article DEP - 20211119 PL - Netherlands TA - Talanta JT - Talanta JID - 2984816R RN - 0 (Herbicides) RN - 0 (Molecularly Imprinted Polymers) RN - 0 (Polymers) RN - 059QF0KO0R (Water) SB - IM MH - Adsorption MH - *Herbicides MH - Magnetic Phenomena MH - *Molecular Imprinting MH - Molecularly Imprinted Polymers MH - Polymers MH - Solid Phase Extraction MH - Water OTO - NOTNLM OT - HPLC OT - Magnetic molecularly imprinted solid-phase extraction OT - Magnetic nanoparticles OT - Molecularly imprinted polymer OT - Phenoxyacid herbicides OT - Water samples EDAT- 2021/11/27 06:00 MHDA- 2022/01/19 06:00 CRDT- 2021/11/26 05:46 PHST- 2021/10/15 00:00 [received] PHST- 2021/11/16 00:00 [revised] PHST- 2021/11/17 00:00 [accepted] PHST- 2021/11/27 06:00 [pubmed] PHST- 2022/01/19 06:00 [medline] PHST- 2021/11/26 05:46 [entrez] AID - S0039-9140(21)01004-3 [pii] AID - 10.1016/j.talanta.2021.123082 [doi] PST - ppublish SO - Talanta. 2022 Mar 1;239:123082. doi: 10.1016/j.talanta.2021.123082. Epub 2021 Nov 19.