PMID- 34902718 OWN - NLM STAT- MEDLINE DCOM- 20220111 LR - 20220111 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1662 DP - 2022 Jan 11 TI - Amphiphilic copolymers grafted on monodisperse magnetic microspheres as an efficient adsorbent for the extraction of safrole in the plasma. PG - 462733 LID - S0021-9673(21)00855-4 [pii] LID - 10.1016/j.chroma.2021.462733 [doi] AB - Polystyrene (PS) microsphere is a kind of attractive extracting medium due to its high stability in different matrices and its particle size can be controlled. The attachment of amphiphilic copolymers to the PS microsphere surface can overcome the drawback of PS relevant to its hydrophobic nature and low wettability. In our previous work, the magnetic composite based on PS microsphere (5 microm) and poly (divinylbenzene-co-N-vinylpyrrolidone, DVB-co-NVP) shell was successfully fabricated and applied for the extraction of safrole in cola drinks. However, the large size and ease of sedimentation limited its application in the enrichment of safrole from blood samples. Considering the adjustability of PS microsphere size, we synthesized the porous PS microspheres with the uniform size of 3 microm and then functionalized with Fe(3)O(4) nanoparticles and poly (DVB-co-NVP) layer in this work. Using the proposed material as extraction sorbent, a simple and fast magnetic solid phase extraction (MSPE) method coupled with HPLC was developed for quantification of safrole in the plasma. Under the optimized conditions, the response to safrole was linear in the range of 0.02-12 microg mL(-1), and the limit of detection (LOD) was 0.006 microg mL(-1). Satisfactory recoveries were obtained between 85.67% and 97.74% (spiked at 0.05, 0.2, 2 microg mL(-1)) and the relative standard deviations (RSDs) for the above spiked levels of the analyte were below 3.9% (n = 6). The adsorbent can be reused for 6 cycles without a significant loss of extraction capability. CI - Copyright (c) 2021. Published by Elsevier B.V. FAU - Nie, Ying AU - Nie Y AD - College of Medical Technology, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Chengdu, Sichuan 611137, China. FAU - Luo, Yuan AU - Luo Y AD - College of Medical Technology, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Chengdu, Sichuan 611137, China. FAU - Luo, Shajie AU - Luo S AD - College of Medical Technology, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Chengdu, Sichuan 611137, China. FAU - Cao, Xiujun AU - Cao X AD - College of Medical Technology, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Chengdu, Sichuan 611137, China; Research Center of Analysis and Measurement, Fudan University, 2005 Songhu Road, Shanghai 200438, China; Department of Chemistry, The University of Warwick, Coventry, CV4 7AL, UK. Electronic address: 072037001@fudan.edu.cn. FAU - Song, Guoxin AU - Song G AD - Research Center of Analysis and Measurement, Fudan University, 2005 Songhu Road, Shanghai 200438, China. Electronic address: gxsong@fudan.edu.cn. FAU - Deng, Chunhui AU - Deng C AD - Department of Chemistry, Institutes of Biomedical Sciences, Fudan University, 2005 Songhu Road, Shanghai 200438, China. LA - eng PT - Journal Article DEP - 20211204 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - RSB34337V9 (Safrole) SB - IM MH - Adsorption MH - Chromatography, High Pressure Liquid MH - Limit of Detection MH - Magnetic Phenomena MH - Microspheres MH - *Safrole MH - *Solid Phase Extraction OTO - NOTNLM OT - Amphiphilic copolymers OT - Magnetic solid phase extraction OT - Plasma OT - Polystyrene OT - Safrole COIS- Declaration of Competing Interest We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, there is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in, or the review of, the manuscript entitled. EDAT- 2021/12/14 06:00 MHDA- 2022/01/12 06:00 CRDT- 2021/12/13 20:23 PHST- 2021/08/09 00:00 [received] PHST- 2021/11/27 00:00 [revised] PHST- 2021/12/02 00:00 [accepted] PHST- 2021/12/14 06:00 [pubmed] PHST- 2022/01/12 06:00 [medline] PHST- 2021/12/13 20:23 [entrez] AID - S0021-9673(21)00855-4 [pii] AID - 10.1016/j.chroma.2021.462733 [doi] PST - ppublish SO - J Chromatogr A. 2022 Jan 11;1662:462733. doi: 10.1016/j.chroma.2021.462733. Epub 2021 Dec 4.