气相色谱-质谱法检测植物油中腐霉利和氟硅唑含量

Determination of procymidone and flusilazole pesticides in vegetable oil by GC-MS

采用QuEChERS快速净化小柱进行快速样品前处理,利用气相色谱-质谱法检测植物油中腐霉利和氟硅唑农残含量。结果显示:腐霉利和氟硅唑加标回收率分别为85. 0%～96. 0%和88. 3%～94. 1%;精密度实验腐霉利和氟硅唑实验室内变异系数分别为1. 5%～8. 9%和2. 1%～6. 8%;腐霉利和氟硅唑的检出限分别为0. 007 5 mg/kg和0. 022 5 mg/kg。该方法前处理简便,灵敏度高,重现性好。

Using Qu EChERS rapid purification column to pretreat sample,the procymidone and flusilazole pesticides residues in vegetable oil were determined by GC-MS. The results showed that the recoveries of procymidone and flusilazole were 85. 0%-96. 0% and 88. 3%-94. 1%,respectively;the intra-laboratory variation coefficients of procymidone and flusilazole were 1. 5%-8. 9% and 2. 1%-6. 8%,respectively;the detection limits of procymidone and flusilazole were 0. 007 5 mg/kg and 0. 022 5 mg/kg,respectively. The method had the advantages of simple pretreatment,high sensitivity and good reproducibility.