Determination of ipfentrifluconazole residues in fruits and vegetables by QuEChERS-UPLC-MS/MS
A QuEChERS-ultra high performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS)method was developed for the determination of ipfentrifluconazole residues in fruits and vegetables.The samples were extracted by acetonitrile,purified by anhydrous magnesium sulfate,PSA and GCB,filtered by membrane,and then determined by UPLC-MS/MS,quantified by an external standard method.The results showed that the method had good linear relationship at the concentration of 0.005 to 0.5 mg/L,the correlation coefficients all over 0.995.The limits of quantification in five matrix were 0.01mg/kg.At the spiked levels of 0.01,0.1 and 0.5 mg/kg,the average recoveries of ipfentrifluconazole were 84.0％-102.1％,and the relative standard deviations were 2.1％-12.7％.The method was simple,sensitive and efficient,and could be used for ipfentrifluconazole residue detection in fruits and vegetables.
QuEChERSUPLC-MS/MSipfentrifluconazolefruit and vegetableresiduedetermination
万方数据
维普
