气相色谱-质谱联用仪测定果蔬中12种农药残留量

Determination of pesticide residues in fruits and vegetables by Gas Chromatography/Mass Spectrometry

用气相色谱-质谱联用仪以选择离子检测方式对果蔬类农产品中含有机氯,有机磷,氨基甲酸酯及除虫菊酯类4类12种农药的残留量进行定性和定量分析.通过优化色谱条件,缩短分析周期,利用保留时间和特征离子进行定性鉴定,使得结果更可靠.结果表明方法回收率在80%～120%,痕量农残组分定量分析变异系数在6%～20%之间,能满足多残留农药残留分析的要求.

A new method for the rapid determination of 12 pesticides residue in fruits and vegetables by Gaschromatography/Masss Spectrometry was developed.The analysis time decreased by operational conditions.The average spiked recoveries ranged from 80%～120%,with the relative standard deviation(RSD) from 6%～20%.The method can be used for pesticide residue in fruits and vegetables,and analysis result is reliable and accurate.