Rapid screening of mycotoxins in liquid milk and milk powder by automated size-exclusion SPE-UPLC-MS/MS and quantification of matrix effects over the whole chromatographic run
文献类型: 外文期刊
第一作者: Wang, Xiupin
作者: Wang, Xiupin;Li, Peiwu;Wang, Xiupin;Li, Peiwu;Li, Peiwu;Wang, Xiupin;Li, Peiwu
作者机构:
关键词: Liquid milk;Milk powder;UPLC-MS/MS;Automated exclusion SPE;Matrix effects;Permanent postcolumn infusion (PCI)
期刊名称:FOOD CHEMISTRY ( 影响因子:7.514; 五年影响因子:7.516 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: An automated, size-exclusion solid phase extraction (SPE)-UPLC-MS/MS protocol without pre-treatment of samples was developed to screen for four mycotoxins (OTA, ZEN, AFB(1), and AFM(1)) in liquid milk and milk powder. Firstly, a mixed macropore-silica gel cartridge was established as a size-exclusion SPE column. The proposed methodology could be a candidate in green analytical chemistry because it saves on manpower and organic solvent. Permanent post-column infusion of mycotoxin standards was used to quantify matrix effects throughout the chromatographic run. Matrix-matched calibration could effectively compensate for matrix effects, which may be caused by liquid milk or milk powder matrix. Recovery of the four mycotoxins in fortified liquid milk was in the range 89-120% and RSD 2-9%. The LOD for the four mycotoxins in liquid milk and milk powder were 0.05-2 ng L-1 and 0.25-10 ng kg(-1), respectively. The LOQ for the four mycotoxins in liquid milk and milk powder were 0.1-5 ng L-1 and 0.5-25 ng kg(-1), respectively. (C) 2014 Elsevier Ltd. All rights reserved.
分类号: TS2`TS201.2
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