MSPD-RRLC-UV/MS法同时检测果蔬中9种三嗪类除草剂残留量  

Determination of nine triazine herbicides residues in fruits and vegetables by MSPD-RRLC-UV/MS

作　　者：俞志刚[1] 丁为民[1] 何敬[2] 徐义[1] 车成彬[1] 由君[1] 杨照地[1] 

机构地区：[1]哈尔滨理工大学化学与环境工程学院,哈尔滨150080 [2]华南农业大学基础实验教学中心化学部,广州510642

出　　处：《分析试验室》2009年第9期38-42,共5页Chinese Journal of Analysis Laboratory

基　　金：黑龙江省自然科学基金(E2007-35);黑龙江省教育厅(11511082)项目资助

摘　　要：基于基质固相分散萃取（MSPD）．快速高分离液相色谱紫外和质谱检测法，测定了果蔬中9种三嗪类除草剂的残留量。以浓度与色谱峰面积之间的线性关系定量，保留时间结合质谱信息进行定性。9种待测物在0．02～4．0mg／kg范围内峰面积与浓度具有良好的线性关系，相关系数（r^2）在0．9996～0．9998之间；方法的最低检出限（LOD）为0．002mg／kg；低、中和高3个浓度点的加标回收率介于75．2％～95．6％之间，相对标准偏差（RSD）小于11％。A rapid and simple MSPD-RRLC-UV/MS method has been developed for simultaneous analysis of nine triazine herbicides muhi-residues in fruits and vegetables taking MSPD as the pre-processing method of the samples, RRLC as the separating means, UV as the quantitative and MS as the qualitative detectors. Nine target testing com- pounds were quantified by the linear relationship between the concentration and the peak area of chromatogram and identified by retention time and MS. The researching results show that the liner relationship between peak area and concentration was satisfactory in the range of 0.02 - 4.0 mg/kg, the correlation coefficients （ r^2 ） were between 0. 9996 and 0.9998; the limit of detection （LOD） was 0. 002 mg/kg; the recoveries were between 75.2% and 95.6% at three spiking levels of 0.05, 2.0 and 4.0 mg/kg with the relative standard deviations （RSD） less than 11%.

关 键 词：除草剂 三嗪类 果蔬 MSPD-RRLC—UV/MS 

分 类 号：O657.63[理学—分析化学]