Determination of Mycotoxins in Forage Grass by Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry Coupled with Solid Supported Liquid-Liquid Extraction
Experimental Techniques and Methods|更新时间:2025-03-17
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Determination of Mycotoxins in Forage Grass by Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry Coupled with Solid Supported Liquid-Liquid Extraction
Journal of Instrumental AnalysisVol. 44, Issue 3, Pages: 506-513(2025)
HAN Yi-zhi,SHENG Wan-li,WANG Xiao-min,REN Cai-xia,ZHANG Chun-yan,ZHENG Shu-zhan.Determination of Mycotoxins in Forage Grass by Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry Coupled with Solid Supported Liquid-Liquid Extraction[J].Journal of Instrumental Analysis,2025,44(03):506-513.
HAN Yi-zhi,SHENG Wan-li,WANG Xiao-min,REN Cai-xia,ZHANG Chun-yan,ZHENG Shu-zhan.Determination of Mycotoxins in Forage Grass by Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry Coupled with Solid Supported Liquid-Liquid Extraction[J].Journal of Instrumental Analysis,2025,44(03):506-513. DOI: 10.12452/j.fxcsxb.240726256.
Determination of Mycotoxins in Forage Grass by Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry Coupled with Solid Supported Liquid-Liquid Extraction
A new method for the simultaneous determination of 11 mycotoxins(aflatoxin B
1
,aflatoxin B
2
,aflatoxin G
1
,aflatoxin G
2
,zearalenone,zearalanone,
β
-zearalanol,
α
-zearalanol,
β
-zearalenol,
α
-zearalenol and deoxynivalenol) in forage grass by means of solid supported liquid-liquid extraction(SLE) coupled with ultra high performance liquid chromatography-tandem mass spectrometry has been established. In this study,two pairs of mycotoxins epimers (
β
-zearalanol and
α
-zearalanol,
β
-zearalenol and
α
-zearalenol) were separated completely under optimized chromatographic conditions. The sample were extracted with 1% formic acid acetonitrile/water(8∶2),and then purified by a diatomaceous earth SLE cartridge. Series of experiment conditions such as the extraction solvent type and the volume of elution solvent was examined and optimized,6 mL ethyl acetate was the suitable elution solution. The matrix effects of mycotoxins in alfalfa,oats,leymus chinensis and silage corn were discussed,and the interference of matrix was reduced by the matrix matched calibration standards curve. Results showed good linearity(
r
2
>0.995) for determination of 11 mycotoxins. The limits of detection(LODs) and the limits of quantitation(LOQs) were in the ranges of 0.3 μg/kg to 20.3 μg/kg and 0.8 μg/kg to 51.4 μg/kg,respectively. Recoveries for 11 mycotoxins at three spiked levels ranged from 72.7% to 108% with relative standard deviations(RSDs) ranged from 3.4% to 8.1%. The method has the advantages of simple operation,good reproducibility and accurate,and the LOQ of method were lower than the specific migration limit specified in the regulation and standards. The proposed method has great potentials in the detection of mycotoxins in forage grass.
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