Objective To establish a method for determination of pesticide residues in homologous samples of medicines and foods by gel permeation chromatography-gas chromatography-mass spectrometry (GPC-GC-MS). Methods Three different purification methods were used for pretreatment of homologous samples of medicines and foods. Thirty kinds of pesticide residues in the samples were determined by GPC-GC-MS. Results The results showed that 30 kinds of pesticides had good linear relationships in the range of 0.01-0.2 μg/mL, the limits of detection were 0.01 mg/kg, and the recoveries at 3 spiked levels of the three added levels of the homologous samples of medicines and foods samples were 69.1%-88.8%, with the relative standard deviations of 3.3%-19.4%. Conclusion Among the three methods, QuEChERS method has high sensitivity and accuracy, which can be used for simultaneous determination of multiple pesticide residues in the homologous samples of medicines and foods.
标题:在线凝胶渗透色谱-气相色谱质谱联用仪测定药食同源样品中30种农药残留
英文标题:Determination of 30 kinds of pesticide residues in homologous samples of medicines and foods by online gel permeation chromatography-gas chromatography-mass spectrometry
中文关键词:药食同源,在线凝胶渗透色谱-气相色谱质谱联用法,农药,
英文关键词:homologous samples of medicines and foods,online gel permeation chromatography-gas chromatography-mass spectrometry,pesticide residues,