Pesticide Residue and Food Quality Analysis Laboratory, University of Agricultural Sciences, Raichur, Karnataka 584 104, India.
Pesticide Residue and Food Quality Analysis Laboratory, University of Agricultural Sciences, Raichur, Karnataka 584 104, India.
Food Chem. 2021 Sep 1;355:129523. doi: 10.1016/j.foodchem.2021.129523. Epub 2021 Mar 10.
A method for simultaneous determination of carbendazim and tebuconazole residues in cabbage was developed and validated in LC-MS/MS. Samples were extracted and purified following the modified QuEChERS procedure, which enabled the elution of carbendazim and tebuconazole at 0.96 and 5.31 min, respectively. LOD and LOQ were 0.0005 and 0.0015 mg kg, respectively. Mean recovery was in the range of 78.94 to 104.89% for carbendazim and 76.07 to 98.62% for tebuconazole. The field samples recorded residues of 0.274 and 0.481 mg kg; and 0.194 and 0.392 mg kg at single and double dose for carbendazim and tebuconazole, respectively. Half-life values were 2.17 and 2.99 for carbendazim and 2.74 and 2.81 for tebuconazole at single and double dose, respectively. Decontamination with saltwater wash followed by cooking and lemon water wash found superior in the removal of residues more than 90%.
建立了一种采用 LC-MS/MS 同时测定甘蓝中多菌灵和戊唑醇残留的方法。样品经改良的 QuEChERS 法提取净化，多菌灵和戊唑醇分别于 0.96 和 5.31 min 洗脱。LOD 和 LOQ 分别为 0.0005 和 0.0015 mg kg。多菌灵和戊唑醇的平均回收率分别在 78.94%至 104.89%和 76.07%至 98.62%之间。田间样品中单、双剂量下多菌灵和戊唑醇的残留量分别为 0.274 和 0.481 mg kg 和 0.194 和 0.392 mg kg。单、双剂量下多菌灵和戊唑醇的半衰期值分别为 2.17 和 2.99 天和 2.74 和 2.81 天。盐水冲洗后烹饪和柠檬水冲洗对去除残留的效果优于 90%。
