【摘要】 研究了中药材中有机磷农药残留量的高效液相色谱-串联质谱同步检测方法。采用CAPCELL PAK MG C18反相柱,以乙腈为提取溶液,以Carb/PSA柱为净化柱,液相色谱-串联质谱仪测定。方法线性范围为10～500μg/L,11种有机磷农药在此范围内线性良好,相关系数为0.9961～0.9999。在10～100μg/kg浓度范围内,加标回收率在70%～110%之间,相对标准偏差为1.4%～11%,最低检出限为2～20μg/kg,符合残留检测分析要求。更多还原

【Abstract】 A rapid analytical method based on high performance liquid chromatography tandem mass spectrometry(HPLC-MS/MS) for detection of organophosphorus pesticides in five Chinese medicinal herb(Gardenia jasminoides Ellis、Plantago asiatica Linn、Radix Scrophulariae、Gly-cyrrhiza uralensis Fisch and Linicera japonica) was developed.Organophosphorus pesticides were extracted by acetonitrile from the Chinese medicinal herb samples and cleaned up with Carb/PSA cartridge,then were detected by HPLC-MS/MS.The linear ranges of 11 organophosphorus pesticides were 10-500 μg/L.In the range of 10-100 μg/kg,the average recoveries of 11 organophosphorus pesticides achieved 70%,the limits of detection were 2～20 μg/kg.It was in accordance with the requirements for simultaneous determination of 11 organphosphorus pesticides.更多还原