Study on the detection of buprofezin and tricyclazole residues in mulberry leaf
An ultra performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS)method for quantification of buprofezin and tricyclazole in mulberry leaves was developed.The samples were extracted with acetonitrile,purified by Carbon/NH2,detected under multiple reaction monitoring mode with positive electrospray ionization,and quantified by the method of matrix matched external standard.The results showed that the limits of quantification for buprofezin and tricyclazole were 0.001 mg/kg.The linear relationship was good at the concentrations of 0.000 1-0.10 mg/L,and the correlation coefficients were over 0.999.With the addition concentration of 0.001-0.10 mg/kg,the average recoveries ranged from 91.7％to 104.5％,and the relative standard deviations were 1.31％-8.46％.The method was sensitive and accurate for the determination of buprofezin and tricyclazole residues in mulberry leaves.
万方数据
维普
