Simultaneous Determination of Aflatoxin B1, B2, G1, G2 in Peanut by LC-MS/MS

The aflatoxin B1, B2, G1, G2 in peanut were develop by LC-MS/MS. The mass spectrometer was operated in the positive ion mode using multiple reaction monitoring. The sample was extracted with methanol, and chromatographic separation was carried out on a MGIII-C₁₈ column(2.1 mm×150 mm×1.8 μm) with eluthic sion of V(acetonitrile):V(water)＝35:65. The limit of detection is 0.5 μg•L^－1, the limit of quantitation is
0.5 μg•kg^－1. The linear plots are between 0.5 μg•L^－1 and 25.0 μg•L^－1. Overall recoveries are between 88.3% and 99.2%, and RSD values are between 1.73％ and 3.75％.