PMID- 34213284 OWN - NLM STAT- MEDLINE DCOM- 20210726 LR - 20210726 IS - 1872-2059 (Electronic) IS - 1000-8713 (Linking) VI - 38 IP - 7 DP - 2020 Jul 8 TI - [Rapid determination of trace ciprofloxacin residue in milk samples using molecularly imprinted membrane extraction-high performance liquid chromatography-tandem mass spectrometry]. PG - 775-781 LID - 10.3724/SP.J.1123.2020.02017 [doi] AB - An enrofloxacin (ENR) molecularly imprinted membrane (MIM) was prepared with a polyvinylidenedifluoride (PVDF) membrane as the carrier, ENR as the dummy template molecule, alpha-methacrylic acid (MAA) as the functional monomer, ethylene glycol dimethacrylate (EGDMA) as the cross-linker, and a chloroform-methanol mixture solvent as the porogen. The MIM showed excellent selectivity, high adsorption capacity, and high adsorption rate for ciprofloxacin. Additionally, a method combining molecularly imprinted membrane extraction (MIME) and high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) was developed and validated for the selective analysis of trace ciprofloxacin residue in milk samples. The sample pretreatment involved only a single step of protein precipitation. Ciprofloxacin showed good linearity in mass concentration range of 0.1-200 mug/L with a high correlation coefficient (r(2)>0.9996). The limit of detection (LOD, S/N=3) and limit of quantification (LOQ, S/N=10) were 0.02 mug/L and 0.1 mug/L, respectively. The relative standard deviations (RSDs) of interday and intraday precisions ranged from 3.3% to 7.9%. The ciprofloxacin recovery was in the range of 92.6%-119.1%. The results showed that the proposed method is simple and fast, with high accuracy and sensitivity, thus being suitable for the rapid detection of trace ciprofloxacin residue in milk samples. FAU - Tian, Hongjing AU - Tian H AD - College of Life Science and Biopharmaceutical, Shenyang Pharmaceutical University, Shenyang 110016, China. AD - Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China. FAU - Liu, Tong AU - Liu T AD - Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China. FAU - You, Song AU - You S AD - College of Life Science and Biopharmaceutical, Shenyang Pharmaceutical University, Shenyang 110016, China. FAU - Zhang, Feng AU - Zhang F AD - Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China. LA - chi PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Polymers) RN - 5E8K9I0O4U (Ciprofloxacin) SB - IM MH - Animals MH - Chromatography, High Pressure Liquid MH - Ciprofloxacin/*analysis MH - Food Analysis/*methods MH - Milk/*chemistry MH - *Molecular Imprinting MH - Polymers MH - Solid Phase Extraction MH - Tandem Mass Spectrometry OTO - NOTNLM OT - ciprofloxacin OT - extraction OT - high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) OT - milk OT - molecularly imprinted membrane EDAT- 2021/07/03 06:00 MHDA- 2021/07/27 06:00 CRDT- 2021/07/02 09:13 PHST- 2021/07/02 09:13 [entrez] PHST- 2021/07/03 06:00 [pubmed] PHST- 2021/07/27 06:00 [medline] AID - 10.3724/SP.J.1123.2020.02017 [doi] PST - ppublish SO - Se Pu. 2020 Jul 8;38(7):775-781. doi: 10.3724/SP.J.1123.2020.02017.