摘要
建立了超高效液相色谱-三重四级杆串联质谱(UPLC-MS/MS)检测草莓中唑螨酯残留分析方法。样品采用乙腈提取,石墨化碳黑氨基复合柱净化,超高效液相色谱分离,多反应监测模式测定,外标法定量。结果表明,在0.1～100μg/L浓度范围内,线性关系良好,R^2>0.998 5,平均回收率在94.0%～98.0%之间,相对标准偏差<5%(n=6),方法的检出限为0.02μg/kg。可用于草莓中唑螨酯残留检测。
A method was established to determine fenpyroximate residue in strawberry by UPLC - MS/MS. The homogenized sample was extracted by acetonitrile, purified by ProElut CARB/NH2, and separated by UPLC and determined by tandem mass spectrometry under the mode of multiple reaction monitoring. The quantitative analysis of external standard calibration curves was used. The method had a good linear relationship in the range of 0. 1～100μg/L for fenpyroximate with the relative coefficients R^2 〉 0. 998 5. The recovery was 94.0% -98.0% with the relative standard deviations （RSD） less than 5% （n =6）, and the limit of detection was 0. 02μg/kg. The developed method is applicable for determining fenpyroximate residue in fresh strawberry.
作者
覃明丽
李国烈
苏旭
杜鑫
蒋金芳
Qin Mingli, Li Guolie, Su Xu, Du Xin, Jiang Jinfang(Nanchong Monitoring and Test Center for Agricultural Products Quality, Nanchong Sichuan 637000, Chin)
出处
《农药科学与管理》
CAS
2018年第2期35-40,共6页
Pesticide Science and Administration
