PMID- 35531521 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220716 IS - 2046-2069 (Electronic) IS - 2046-2069 (Linking) VI - 9 IP - 51 DP - 2019 Sep 18 TI - Magnetic molecularly imprinted polymers for the detection of aminopyralid in milk using dispersive solid-phase extraction. PG - 29998-30006 LID - 10.1039/c9ra05782j [doi] AB - A method for dummy molecular imprinting-magnetic dispersive solid-phase extraction (MI-MDSPE) coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed for the selective determination of aminopyralid in milk. The magnetic material and polymers were combined via a series of modifications in Fe(3)O(4). Fe(3)O(4)@SiO(2)-NH(2)@MIP, Fe(3)O(4)@SiO(2)-COOH@MIP and two types of aminopyralid-specific magnetic molecularly imprinted polymers (MMIPs) were prepared on the surface of magnetic nanoparticles modified with amino and carboxyl groups. The morphology and magnetic properties of the polymer were characterized. Fe(3)O(4)@SiO(2)-NH(2)@MIP exhibits not only good dispersibility and magnetic properties, but also an outstanding recognition pattern to the target analyte. Adsorption experiments demonstrated that Fe(3)O(4)@SiO(2)-NH(2)@MIP, with a high specific surface area and fast mass transfer rate, had a higher affinity than Fe(3)O(4)@SiO(2)-COOH@MIP towards aminopyralid. Under the optimized MI-MDSPE conditions, the method had good linearity (R (2) > 0.9972), excellent recoveries (83.3-90%), and good precision (relative standard deviations (RSDs) < 12.6%). This method has limits of detection (LOD) and quantification (LOQ) of 0.231 and 0.77 mug kg(-1), respectively, indicating that these MMIPs can be used to analyse trace levels of aminopyralid in real samples. CI - This journal is (c) The Royal Society of Chemistry. FAU - He, Yahui AU - He Y AD - Beijing Technology and Business University 100048 P. R. China hyh@btbu.edu.cn +86-1068985456 +86-1068985456. AD - Institute of Quality Standards & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences Beijing 100081 P. R. China sheyongxin@caas.cn +86-1082106567 +86-1082106513. FAU - Tan, Sijia AU - Tan S AD - Institute of Quality Standards & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences Beijing 100081 P. R. China sheyongxin@caas.cn +86-1082106567 +86-1082106513. FAU - Abd Ei-Aty, A M AU - Abd Ei-Aty AM AUID- ORCID: 0000-0001-6596-7907 AD - Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University 12211-Giza Egypt. AD - Department of Medical Pharmacology, Medical Faculty, Ataturk University 25240-Erzurum Turkey. FAU - Hacimuftuoglu, Ahmet AU - Hacimuftuoglu A AD - Department of Medical Pharmacology, Medical Faculty, Ataturk University 25240-Erzurum Turkey. FAU - She, Yongxin AU - She Y AUID- ORCID: 0000-0003-4039-9186 AD - Institute of Quality Standards & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences Beijing 100081 P. R. China sheyongxin@caas.cn +86-1082106567 +86-1082106513. LA - eng PT - Journal Article DEP - 20190923 PL - England TA - RSC Adv JT - RSC advances JID - 101581657 PMC - PMC9072149 COIS- Authors have declared no conflicts of interest. EDAT- 2019/09/23 00:00 MHDA- 2019/09/23 00:01 PMCR- 2019/09/23 CRDT- 2022/05/09 04:35 PHST- 2019/07/25 00:00 [received] PHST- 2019/09/17 00:00 [accepted] PHST- 2022/05/09 04:35 [entrez] PHST- 2019/09/23 00:00 [pubmed] PHST- 2019/09/23 00:01 [medline] PHST- 2019/09/23 00:00 [pmc-release] AID - c9ra05782j [pii] AID - 10.1039/c9ra05782j [doi] PST - epublish SO - RSC Adv. 2019 Sep 23;9(51):29998-30006. doi: 10.1039/c9ra05782j. eCollection 2019 Sep 18.