SUN Liang-juan,ZHENG Yu-xi,TANG Yuan-yuan,LI Hong-quan,FENG Xiang-long,PANG Tian-run.Simultaneous Determination of 13 Mycotoxins in Grains by High Performance Liquid Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2025,44(11):2354-2361.
SUN Liang-juan,ZHENG Yu-xi,TANG Yuan-yuan,LI Hong-quan,FENG Xiang-long,PANG Tian-run.Simultaneous Determination of 13 Mycotoxins in Grains by High Performance Liquid Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2025,44(11):2354-2361. DOI: 10.12452/j.fxcsxb.250222112.
Simultaneous Determination of 13 Mycotoxins in Grains by High Performance Liquid Chromatography-Tandem Mass Spectrometry
A high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS) analytical method was developed for the determination of thirteen mycotoxins in grains by using Captiva EMR-Lipid column for purification. After being grinded,samples were extracted with acetonitrile-water-formic acid(84∶15∶1,volume ratio). Extract solution was purified by Captiva EMR-Lipid solid phase extraction column,and then concentrated by nitrogen blowing,diluted to a certain volume and determined. The targets were seperated on a XSelect HSS T3(2.1 mm×100 mm,3.5 μm) column. Acetonitrile and 0.1% formic acid water were selected for the positive ion mode and
methanol and 0.1% ammonia water for the negative mode. Gradient elution and mass spectrometry under multiple reaction monitoring(MRM) mode were used for testing and external standard method was used for quantitative analysis. Thirteen mycotoxins exhibited good linear relationships across different mass concentration ranges with their correlation coefficients(
r
2
) greater than 0.99. The limits of detection(LOD)were 0.10-3.12 μg/kg,and limits of quantitation(LOQ)were 0.33-10.4 μg/kg. Corn,wheat,rice,and sorghum were used as the blank matrix,and spiked at three levels of high,medium,and low. The average recoveries were 76.4%-108%,and the relative standard deviations(RSDs) were 3.2%-8.8%(
n
=6). Imported grain samples were tested by the method. Aflatoxin B1,T-2 and ochratoxin A were detected in a rice sample,and zearalanone was detected in a corn sample. The method is accurate,reliable and reproducible,which can be used for the quantitative analysis of thirteen mycotoxins for imported grains.
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