超高效液相色谱-串联质谱法测定噻嗪酮在茭白中的残留  

Determination of buprofezin residues in Zizania latifoliaby UPLC-MS/MS

作　　者：郭明程 聂东兴 汤涛[2] 李贤宾 GUO Mingcheng;NIE Dongxing;TANG Tao;LI Xianbin(Institute for the Control of Agrochemicals,Ministry of Agriculture and Rural Affairs,Beijing 100125,China;Institute of Quality Standards for Agricultural Products,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,Zhejiang,China)

机构地区：[1]农业农村部农药检定所,北京100125 [2]浙江省农业科学院农产品质量标准研究所,浙江杭州310021

出　　处：《世界农药》2021年第1期46-49,56,共5页World Pesticide

摘　　要：利用超高效液相色谱-三重四级杆串联质谱仪建立了噻嗪酮在茭白中残留的测定方法,以期为大量茭白中的噻嗪酮残留检测提供技术支撑。样品经乙腈提取,弗罗里硅土柱净化,超高效液相色谱-串联质谱检测。结果表明,噻嗪酮在0.5~500μg/L范围内线性关系良好,相关系数为0.9952,在0.02~20 mg/kg添加水平下,噻嗪酮在茭白和茭白植株中的平均回收率为84%~103%,相对标准偏差为3.2%~10.8%,噻嗪酮在茭白和茭白植株中的定量限为0.02 mg/kg。该方法简便、快速、准确、灵敏度高,可用于茭白中噻嗪酮的残留检测。A method for determination of buprofezin residues in Zizania latifolia was established based on ultrahigh performance liquid chromatography tandem mass spectrometry(UPLC-MS/MS).The samples were extracted with acetonitrile,purified with an florisil column,and determined by UPLC-MS/MS.The results showed that the calibration curve for buprofezin was linear in the range of 0.5-500μg/L with correlation coefficients of 0.9952.When the spiked level ranged from 0.02 to 20 mg/kg,the average recoveries of buprofezin in the stem and bract of Zizania latifolia were 84%-103%,and the relative standard deviation(RSD)ranged from 3.2%to 10.8%.The limit of quantitation(LOQ)of buprofezin in the stem and bract of Zizania latifolia was 0.02 mg/kg.The method is simple,rapid,accurate,and sensitive,and can be adapted for the determination of buprofezin residues in Zizania latifolia.

关 键 词：噻嗪酮 茭白 超高效液相色谱-串联质谱 残留 

分 类 号：TQ453[化学工程—农药化工]