串联质谱法测定茶叶中16种真菌毒素
前处理方法的选择及优化
采用合适的提取溶剂、利用有效的提取方式和最佳的净化方法是超高效液相色谱串联质谱测定茶叶中16种真菌毒素前极为重要的一步。
化合物 | 线性 范围 (ng/ml) | 相关 系数 r | 红茶 | 黑茶 | 绿茶 | ||||||||
LOD (μg/kg) | LOQ (μg/kg) | ME (%) | LOD (μg/kg) | LOQ (μg/kg) | ME (%) | LOD (μg/kg) | LOQ (μg/kg) | ME (%) | |||||
DON | 1.0~100.0 | 0.9999 | 2.0 | 6.0 | 25.3 | 2.0 | 6.0 | 19.1 | 2.0 | 6.0 | 14.8 | ||
3-ADON | 5.0~100.0 | 0.9996 | 1.0 | 3.0 | 32.0 | 1.0 | 3.0 | 31.6 | 1.0 | 3.0 | 23.7 | ||
15-ADON | 5.0~100.0 | 0.9989 | 1.0 | 3.0 | 39.9 | 1.0 | 3.0 | 28.1 | 1.0 | 3.0 | 18.1 | ||
NIV | 5.0~100.0 | 0.9997 | 5.0 | 15.0 | 30.9 | 5.0 | 15.0 | 37.9 | 5.0 | 15.0 | 33.3 | ||
ZEN | 0.5~20.0 | 0.9990 | 1.0 | 3.0 | 16.2 | 1.0 | 3.0 | 35.6 | 1.0 | 3.0 | 18.9 | ||
AFB1 | 0.05~2.0 | 0.9998 | 0.05 | 0.15 | 16.9 | 0.05 | 0.15 | 18.8 | 0.05 | 0.15 | 14.8 | ||
AFB2 | 0.05~2.0 | 0.9997 | 0.1 | 0.3 | 19.1 | 0.1 | 0.3 | 32.9 | 0.1 | 0.3 | 23.5 | ||
AFG1 | 0.05~2.0 | 0.9993 | 0.05 | 0.15 | 23.2 | 0.05 | 0.15 | 24.1 | 0.05 | 0.15 | 20.5 | ||
AFG2 | 0.05~2.0 | 0.9999 | 0.1 | 0.3 | 30.5 | 0.1 | 0.3 | 35.3 | 0.1 | 0.3 | 26.5 | ||
FB1 | 0.1~4.0 | 0.9997 | 0.2 | 0.6 | 20.6 | 0.2 | 0.6 | 33.6 | 0.2 | 0.6 | 25.6 | ||
FB2 | 0.1~4.0 | 0.9996 | 0.5 | 1.5 | 30.9 | 0.5 | 1.5 | 32.4 | 0.5 | 1.5 | 31.2 | ||
FB3 | 0.1~4.0 | 0.9986 | 0.5 | 1.5 | 30.8 | 0.5 | 1.5 | 37.9 | 0.5 | 1.5 | 31.8 | ||
OTA | 0.05~2.0 | 0.9992 | 0.1 | 0.3 | 19.7 | 0.1 | 0.3 | 18.9 | 0.1 | 0.3 | 49.0 | ||
T-2 | 0.5~20.0 | 0.9991 | 0.2 | 0.6 | 65.3 | 0.2 | 0.6 | 69.5 | 0.2 | 0.6 | 70.6 | ||
HT-2 | 1.0~40.0 | 0.9999 | 0.2 | 0.6 | 28.6 | 0.2 | 0.6 | 33.1 | 0.2 | 0.6 | 29.6 | ||
ST | 0.05~2.0 | 0.9992 | 1.0 | 3.0 | 19.5 | 1.0 | 3 | 21.5 | 1.0 | 3.0 | 15.7 |