Determination of 15 pesticide residues in garlic by QuEChERS combined with ultra-high performance liquid chromatography-tandem mass spectrometry
[Aims]A method for the determination of 15 pesticide residues in garlic was developed.[Methods]15 Pesticides in garlic were extracted and purified by QuEChERS method.Ultra-high performance liquid chromatography-tandem mass spectrometry method was used to separate and quantitatively analyze the pesticides.[Results]The linear relationship of the 15 pesticides was good in the range of 5-200 μg/L,with the correlation coefficients more than 0.995.The detection limits of the method were 0.72-2.9 μg/kg,and the limits of quantification were 2.4-9.7 μg/kg.The average recoveries of the 15 pesticides were 71.7％-110.2％at the spiked levels of 10,20 and 100 μg/kg,with RSDs in the range of 1.2％to 12.2％.[Conclusions]The method can be applied for the determination of the 15 pesticide residues in garlic.
QuEChERSultra-high performance liquid chromatography-tandem mass spectrometrygarlicpesticide residue
万方数据
维普
