Simultaneous determination of aflatoxin M-1, ochratoxin A, zearalenone and alpha-zearalenol in milk by UHPLC-MS/MS
文献类型: 外文期刊
作者: Huang, L. C.;Zheng, N.;Wen, F.;Cheng, J. B.;Han, R. W.;Xu, X. M.;Li, S. L.;Wang, J. Q.;Huang, L. C.;Cheng, J. B.;Zheng, B. Q.;Huang, L. C.;Zheng, N.;Wen, F.;Han, R. W.;Xu, X. M.;Li, S. L.;Wang, J. Q.;Wang, J. Q.
作者机构:
关键词: Milk;Mycotoxin;Matrix effect;Matrix-matched calibration curve;UHPLC-MS/MS
期刊名称: FOOD CHEMISTRY
ISSN: 0308-8146
年卷期: 2014 年 146 卷
页码:
收录情况: SCI
摘要: In this study, a sensitive and rapid method has been developed for the simultaneous determination of aflatoxin M-1, ochratoxin A, zearalenone and alpha-zearalenol in milk by ultra high performance liquid chromatography combined with electrospray ionisation triple quadrupole tandem mass spectrometry (UHPLC-ESI-MS/MS). The milk samples were purified using Oasis HLB cartridge. The matrix effects were evaluated by determining the signal suppression-enhancement (SSE) and corrected by external matrix-matched calibration. The limits of quantity (LOQ) of the mycotoxins were in the range of 0.003-0.015 mu g kg(-1). The high correlation coefficients (R-2 >= 0.996) were obtained in the range of 0.01-1.00 mu g kg(-1) of the mycotoxins, along with good recovery (87.0-109%), repeatability (3.4-9.9%) and intra-laboratory reproducibility (4.0-9.9%) at the concentrations of 0.025, 0.1 and 0.5 mu g kg(-1). The detected rates of the mycotoxins were from 16.7% to 96.7% in raw milk, liquid milk and milk powder samples collected from the dairy farms and supermarkets in Beijing. The method proposed is suitable for the simultaneous determination of aflatoxin M-1, ochratoxin A, zearalenone, and alpha-zearalenol, and could be performed for analysing the mycotoxins in milk. (C) 2013 Elsevier Ltd. All rights reserved.
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