SPE-GC-MS法测定枇杷花茶中的有机氯农药残留  

Determination of Organochlorines Residues in Loquat Scented Tea by GC-MS Coupled with SPE

作　　者：林旺[1,2] 李垂达 张志钦[1] 陟坤 陈宇[1,2] 

机构地区：[1]莆田学院环境与生物工程学院,福建莆田351100 [2]福建省新型污染物生态毒理效应与控制重点实验室,福建莆田351100

出　　处：《莆田学院学报》2016年第2期87-89,105,共4页Journal of putian University

基　　金：莆田市科技项目(2013N13);国家级大学生创新创业训练计划项目(201411498002);莆田学院校级大学生生创新创业训练计划项目(201511498034)

摘　　要：采用微波萃取（MAE）对样品进行前处理,建立了固相萃取-气相色谱-质谱联用法（SPE-GC-MS）同时测定枇杷花茶中的8种有机氯农药残留的分析方法。实验测得：8种有机氯农药的峰面积与量浓度有良好的线性关系,方法的相关系数在0.9963～0.9998之间,按照S/N=3得出检测限为0.18～4.10ng/m L。样品的平均加标回收率为82.5%～116.5%,精密度在2.1%～9.7%之间。该方法快速、灵敏、准确、成本低,能满足枇杷花茶中多种农药残留的测定。The sample was pre-treated by microwave-assisted extraction and the method for determination of 8 organochloride pesticides was set up by the coupling technique of solid phase extraction and gas chromatography and mass spectrum（SPE-GC-MS）. Based on the experimental results, the peak areas of 8 organochloride pesticides were in good linear relationship with concentration. The correlation coefficient of this method is about 0.996 3～0.999 8 and the detection limits were 0.18 ～4.10 ng/m L according to S /N = 3. The average recoveries were between 82.5 % and116.5 %. The degree of precision was between 2.1 % and 9.7 %. This method is speedy, sensitive, accurate and low-cost and suitable for the analysis of multiple pesticide residues in loquat scented tea.

关 键 词：固相萃取 微波萃取 气质联用法 枇杷花茶 有机氯农药 

分 类 号：O657.7[理学—分析化学] S481.8[理学—化学]