分散液相微萃取-气相色谱串联质谱法测定茶饮料中联苯菊酯  

Determination of bifenthrin in tea drink by dispersive liquid-liquid microextraction coupled with gas chromatography-tandem mass spectrometry

作　　者：徐豪 钱家亮 李洋 赵峰 XU Hao;QIAN Jia-Liang;LI Yang;ZHAO Feng(Linyi Customs,Linyi 276000,China;School of Automation and Electrical Engineering,Linyi University,Linyi 276000,China)

机构地区：[1]临沂海关,临沂276000 [2]临沂大学,自动化与电气工程学院,临沂276000

出　　处：《食品安全质量检测学报》2020年第6期1779-1783,共5页Journal of Food Safety and Quality

基　　金：原山东出入境检验检疫局科研项目(SK201749)。

摘　　要：目的建立分散液相微萃取(dispersive liquid-liquid microextraction,DLLME)-气相色谱串联质谱法(gas chromatography-tandem mass spectrometry,GC-MS/MS)测定茶饮料中联苯菊酯的分析方法。方法样品经分散液相微萃取提取(60μL氯苯为萃取剂,0.8 mL乙腈为分散剂,超声萃取0.5 min),采用GC-MS/MS在多反应监测模式(multiple reaction monitoring,MRM)下分析,外标法定量。结果联苯菊酯在10~200μg/L的浓度范围内线性关系良好,相关系数(r2)大于0.99,检出限(S/N=3)为0.0027μg/L,在0.5、1.0和2.5μg/L 3个水平的添加浓度下,回收率在92.5%~98.7%之间,相对标准偏差小于5.7%(n=6)。结论该方法操作简便快速、准确可靠、灵敏度高,可用于茶饮料中联苯菊酯的检测。Objective To develop a method for determination of bifenthrin in tea drink by dispersive liquid-liquid microextraction(DLLME)coupled with gas chromatography-tandem mass spectrometry(GC-MS/MS).Methods The tea drink samples were extracted by DLLME(60μL chlorobenzene as the extraction solvent,0.8 mL acetonitrile as the dispersive solvent,sonication for 0.5 min).The treated samples were then subjected to GC-MS/MS using multiple reaction monitor(MRM)acquisition mode,and the external standard method was used for quantification.Results Bifenthrin had the good linear relationship in the range of 10-200μg/L(r2>0.99).The limit of detection(S/N=3)of the method was 0.0027μg/L.The recoveries at levels of 0.5,1.0 and 2.5μg/L were ranged from 92.5%to 98.7%.The relative standard deviations(RSDs)were less than 5.7%(n=6).Conclusion The established method is rapid,simple,sensitive,repeatable,and reliable for analysis of bifenthrin in tea drink.

关 键 词：分散液相微萃取 气相色谱-串联质谱法 茶饮料 联苯菊酯 

分 类 号：O657.63[理学—分析化学] TS275.2[理学—化学]