高效液相色谱法检测番茄中乙撑硫脲和丙撑硫脲的残留  

Analysis of Ethylenethiourea and Propylenethiourea Residues in Tomato by HPLC

作　　者：韦婕[1] 宋世明[1] 李雪生[1] 

机构地区：[1]广西大学农药与环境毒理研究所,南宁530005

出　　处：《农药》2016年第12期912-914,共3页Agrochemicals

基　　金：广西农业重点科技项目(桂农业发[2014]35号);广西特聘专家工程专项(2013B015)

摘　　要：【目的】建立番茄中乙撑硫脲和丙撑硫脲残留量的高效液相色谱分析法。【方法】番茄样品用碱性乙腈提取，PSA净化，高效液相色谱测定。【结果】方法的最低检出量为0．038ng；最低检出质量分数为0．01mg／kg，乙撑硫脲和丙撑硫脲的平均回收率分别为72．4％-105．5％、72.8％．100．2％，相对标准偏差分别为2．6％-4．9％、3．1％-3．5％。【结论】方法的灵敏度、准确度及精密度符合农药残留分析要求。[Aims] A method was developed for analysis of ethylenethiourea and propylenethiourea residues in tomato by high performance liquid chromatographic （HPLC）. [Methods] The tomato samples were extracted with alkaline acetonitrile, cleaned up by PSA, and determined by HPLC. [Results] The minimum detectable quantity of the method was 0.038 ng, and the minimum detectable concentration was 0.01 mg/kg. The average recoveries of ETU and PTU were 72.4-105.5 and 72.8-100.2%, the relative standard deviations were 2.6-4.9 and 3.1-3.5%, respectively. [Conclusions] The sensitivity, accuracy and precision of the method met the requirements for pesticide residue analysis.

关 键 词：乙撑硫脲 丙撑硫脲 番茄 高效液相色谱法 

分 类 号：X836[环境科学与工程—环境工程] O657.72[理学—分析化学]