A novel hollow fiber membranes-based dynamic liquid-liquid micro-extraction (HF-DLLME) coupled with HPLC-UV detection has been developed for the residue analysis of tetracyclines in milk samples without deproteinization and degreasing. The influences of experimental parameters were investigated and optimized. The method showed a good performance. The limits of detection (LOD) are in the range of 0.95-3.6μg/L. The recoveries in spiked samples range from 92.38 to 107.3%. The relative standard deviations (RSDs) are lower than 8.66%. The advantages of this method are simple operation, high efficiency, absence of sample carryover and low cost.
Keywords: Chlorotetracycline (PubChem CID: 54675777); Doxycycline (PubChem CID: 54671203); Dynamic liquid-liquid micro-extraction; Hollow fiber membrane; Ionic liquid; Milk; Oxytetracycline (PubChem CID: 54675779); Tetracycline (PubChem CID: 54675776); Tetracyclines.
Copyright © 2017 Elsevier Ltd. All rights reserved.