Multiclass screening method based on solvent extraction and liquid chromatography-tandem mass spectrometry for the determination of antimicrobials and mycotoxins in egg

被引:77
作者
Capriotti, Anna Laura [1 ]
Cavaliere, Chiara [1 ]
Piovesana, Susy [1 ]
Samperi, Roberto [1 ]
Lagana, Aldo [1 ]
机构
[1] Sapienza Univ Roma, Dipartimento Chim, I-00185 Rome, Italy
关键词
Egg; Antibiotics; Antimicrobials; Mycotoxins; QuEChERS; Liquid chromatography-mass spectrometry; SOLID-PHASE EXTRACTION; VETERINARY DRUGS; RESIDUES; FOOD; TETRACYCLINE; ANTIBIOTICS; MATRICES; CLEANUP; FEED; MILK;
D O I
10.1016/j.chroma.2012.10.040
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A QuEChERS (Quick Easy Cheap Effective Rugged Safe)-like extraction method was developed for the simultaneous analysis of veterinary drugs and mycotoxins in hen eggs by liquid chromatography-tandem mass spectrometry (LC-MS/MS) with electrospray (ESI) source. Various classes of antimicrobials (tetracyclines, ionophores, coccidiostats, penicillins, cephalosporins, fluoroquinolones, sulfonamides) and mycotoxins (enniatins, beauvericin, ochratoxins, aflatoxins) were considered for the development of this method. Particular attention was devoted to extraction optimization: different solvents (acetone, acetonitrile and methanol), different pH values and different sample to extracting volume ratios were tested and evaluated in terms of recovery, relative standard deviation (RSD) and ESI signal suppression due to matrix effect. Chromatographic and mass spectrometric conditions were optimized to obtain the best instrumental performances for most of the analytes. Quantitative analysis was performed by means of matrix-matched calibration, in a range that varied depending on the analyte and its established maximum limit, when there was one. Recoveries at 100 mu g kg(-1) spiking level were >62% (3 < RSD < 17) for all the antimicrobials except lasalocid A (41 +/- 10%) and oxacillin (56 +/- 17%). The multiclass method proposed is rapid, simple, and involves a low solvent consumption, in line with QuEChERS features and modern analytical requirements. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:84 / 90
页数:7
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