气质联用检测蔬菜和水果中30种有机磷农药残留

建立一种测定蔬菜和水果中30种有机磷农药残留的气相色谱-质谱方法，所有农药在30min内流出能良好地分离，农药标准的线性范围在0.02-1.0μg/mL,相关系数r均大于0.99,3种浓度加标回收率为72%-109%之间，相对标准偏差均小于10%，检出限（LOD，S/N≥3）为0.002-0.010mg/Kg（S/N≥3）,定量限（LOQ，S/N≥10）为0.010-0.030mg/kg。该方法选择性强，适用于快速测定蔬菜、水果中多种常用有机磷农药残留，且准确度好，精密度高，达到残留量检测中所要求的检测浓度水平。

Determination of 30 kinds of organicphosphorus pesticide residue in vegetables and fruits by GC-MS

To establish a method for determination the residues of thirty kinds of organophosphorus pesticide in vegetables and fruits by gas chromatography-mass spectrometry.All of them were well separated within 30min.The calibration of those pesticides were linear（correlation coefficients not less than 0.99） with in the range of 0.02-1.0μg/mL.The detection limits（S/N≥3） for the method varied from 0.002mg/kg to 0.010mg/kg and the quantitation limits（S/N≥10）varied from 0.010mg/kg to 0.030mg/kg.The average recoveries at three different concentrations in cabbage and grape ranged from 72% to 109%,the relative standard deviations（RSD）of the method was no more than 10%.The method is suitable for determining multiple pesticide residues in vegetables and fruits with satisfactory sensitivity,accuracy and precision.