%0 Journal Article
%T 分散固相萃取-超高效液相色谱串联质谱法测定茶叶中的7种农药残留<br>Determination of seven pesticide residues in tea by dispersive solid-phase extraction and ultra performance liquid chromatography-tandem mass spectrometry
%A 张桂云
%A 杨伟强
%A 林常青
%A 谢建华
%J 福州大学学报(自然科学版)
%D 2016
%R 10.7631/issn.1000-2243.2016.06.0896
%X ：以分散固相萃取技术为前处理手段，结合超高效液相色谱串联质谱法，建立一种快速检测茶叶中7种农药残留的方法. 茶叶样品经前处理后，采用UPLC-MS/MS法检测分析. 用空白样品提取液配制基质工作曲线，外标法定量. 结果表明，多菌灵、丁醚脲、喹螨醚在0.1～2.0、灭多威在1.0～20.0、噻虫嗪、吡虫啉、噻螨酮在2.0～40.0ng·mL-1的范围内具有良好的线性关系，其检出限为0.10～5.00μg·kg-1. 平均加标回收率为75.9%～116.8%，相对标准偏差为2.6%～6.1%. 该方法简便、可靠、稳定，可用于茶叶中多种农药残留的快速检测与确证.<br>A new method of ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) combined with dispersive solid-phase extraction as the pretreatment had been established for the analysis of seven pesticide residues in tea． The pretreated tea samples were analyzed by UPLC-MS/MS. And the matrix-matched external standard calibration curves were used for quantitative analysis. The results show that carbendazim，diafenthiuron，fenazaquin has good linear relationship in the range of 0.1～2.0ng·mL-1，methomyl has good linear relationship in the range of 1.0～20.0ng·mL-1，thiamethoxam，imidacloprid，hexythiazox has a good linear relationship in the range of 2.0～40.0ng·mL-1. The limit of detection of this method was 0.10～5.00μg·kg-1．The average recoveries of the added sample were 75.9%～116.8% with relative standard deviation of 2.6%～6.1%. The method is simple，reliable and stable，and was suited for the rapid detection and confirmation of multiple pesticide residues in tea
%K 分散固相萃取 超高效液相色谱串联质谱 茶叶 农药残留&lt
%K br&gt
%K dispersive solid-phase extraction ultra performance liquid chromatography-tandem mass spectrometry tea pesticide residues
%U http://xbzrb.fzu.edu.cn/ch/reader/view_abstract.aspx?file_no=201606022&flag=1