PMID- 38490140 OWN - NLM STAT- MEDLINE DCOM- 20240401 LR - 20240401 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1720 DP - 2024 Apr 12 TI - Magnetic polyimide nanocomposite for analysis of parabens in cooking wine by magnetic solid-phase extraction coupled with gas chromatography - Mass spectrometry. PG - 464814 LID - S0021-9673(24)00187-0 [pii] LID - 10.1016/j.chroma.2024.464814 [doi] AB - A magnetic polyimide (PI) nanocomposite has been synthesized by phase inversion of PI and simultaneous encapsulation of Fe(3)O(4) nanoparticles. The Fe(3)O(4)/PI nanocomposite was characterized by a variety of characterization techniques, including infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, nitrogen adsorption-desorption isotherms, and vibrating sample magnetometry. The results showed that the prepared nanocomposite had a homogeneous structure, adequate specific surface area (76.1 m(2)/g) and high saturation magnetization (42.9 emu/g). Using parabens as model analytes, the performance of the Fe(3)O(4)/PI nanocomposite as an adsorbent for magnetic solid-phase extraction (MSPE) was evaluated. The extracted parabens were desorbed and determined by gas chromatography-mass spectrometry (GC-MS). The parameters affecting the extraction and desorption efficiency of parabens were optimized. Under the optimal conditions, the developed MSPE/GC-MS method was successfully applied to the determination of parabens in cooking wine. The MSPE/GC-MS method exhibited broad linearity (0.2-100 microg/L), low detection limits (0.04-0.05 microg/L), and satisfactory extraction recoveries (79.2 %-113.3 %) with relative standard deviations (RSDs) ranging from 0.7 % to 10.4 %. For real cooking wine samples, the spiked recoveries ranged from 91.7 % to 118.7 % with RSDs of 1.0 %-11.2 %. The results demonstrated that the Fe(3)O(4)/PI nanocomposite was an effective adsorbent, and this work provides a novel reference for the easy preparation of magnetic adsorbent materials. CI - Copyright (c) 2024 Elsevier B.V. All rights reserved. FAU - Wang, Liuxin AU - Wang L AD - State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China. FAU - Yan, Xiaohui AU - Yan X AD - State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China. Electronic address: yanxiaohui@nbu.edu.cn. FAU - Chen, Xianzhong AU - Chen X AD - State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China. FAU - Li, Yanshuo AU - Li Y AD - State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China. FAU - Wu, Dapeng AU - Wu D AD - State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China. Electronic address: wudapeng@nbu.edu.cn. LA - eng PT - Journal Article DEP - 20240312 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Parabens) SB - IM MH - Gas Chromatography-Mass Spectrometry MH - Parabens MH - *Wine MH - Adsorption MH - Magnetic Phenomena MH - Solid Phase Extraction/methods MH - *Nanocomposites/chemistry MH - Limit of Detection MH - Chromatography, High Pressure Liquid/methods OTO - NOTNLM OT - Cooking wine OT - Gas chromatography-mass spectrometry OT - Magnetic solid-phase extraction OT - Parabens OT - Polyimide nanocomposite COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2024/03/16 05:42 MHDA- 2024/04/01 06:43 CRDT- 2024/03/15 19:13 PHST- 2023/12/16 00:00 [received] PHST- 2024/03/09 00:00 [revised] PHST- 2024/03/11 00:00 [accepted] PHST- 2024/04/01 06:43 [medline] PHST- 2024/03/16 05:42 [pubmed] PHST- 2024/03/15 19:13 [entrez] AID - S0021-9673(24)00187-0 [pii] AID - 10.1016/j.chroma.2024.464814 [doi] PST - ppublish SO - J Chromatogr A. 2024 Apr 12;1720:464814. doi: 10.1016/j.chroma.2024.464814. Epub 2024 Mar 12.