赵越;熊亚兵;杨中华;李建洪;

• 1:华中农业大学

摘要(Abstract)：

农药施用于田间,必然会残留于环境中。农药残留的分析方法多种多样。为探究灵敏度高、重现性好的样品前处理方法,建立了超声辅助乳化液相微萃取,结合气相色谱和火焰光度检测器测定绿茶饮料和番茄汁中5种有机磷农药的方法,对萃取条件进行了优化,如萃取溶剂种类和体积、超声频率和时间、盐效应。在优化后的萃取条件下,5种有机磷农药实现良好分离,空白添加实验结果表明在0.1~10μg·L-1之间,线性相关系数在0.9985~0.9994之间,检测限在0.005~0.020μg·L-1之间,相对标准偏差(n=5)在4.3%~9.4%之间。在绿茶饮料和番茄汁实际样本检测中,目标分析物含量均低于检出限。样本添加回收试验的回收率均大于88.5%,相对标准偏差(n=3)在2.2%~9.8%之间,结果表明该方法用于液体样本中农药残留检测真实可靠。

关键词(KeyWords)： 有机磷农药;绿茶饮料;番茄汁;超声辅助乳化液相微萃取

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费专项资金资助项目(2662015QD007);; 国家自然科学基金资助项目(21507032)

作者(Author): 赵越;熊亚兵;杨中华;李建洪;

Email:

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