分析测试学报2017，Vol.36Issue(11)：1339-1345,7.DOI:10.3969/j.issn.1004-4957.2017.11.008
顶空固相 萃取结合气目色谱-三重四极杆质谱法快速测定茶叶中11种酰胺类除草剂残留
Rapid Determination of 11 Amide Herbicides in Tea by Headspace Solid-phase Microextraction Combined with Gas Chromatography-Triple Quadrupole Mass Spectrometry
摘要
Abstract
Headspace solid-phase microextraction (HS-SPME) combined with gas chromatography-triple quadrupole mass spectrometry(GC-MS/MS) was used for the rapid determination of 11 amide herbicide residues in tea.Various factors affecting extraction performance such as the types of extraction coatings,the type of inorganic salt,water consumption,salt dosage,extraction temperature and extraction time in HS-SPME were optimized by using the all fermented black tea matrix.Under the optimized conditions,four kinds of teas,i.e.geen tea,oolong tea,black tea and puer tea were selected for methodology validation.The results showed that the calibration curves of 11 amide herbicides were linear in the range of 1 1 000 μg/kg,with correlation coefficents(r2) of 0.992 5-0.999 9,and the limits of quantitation ranged from 1 μg/kg to 10 μg/kg.The average recoveries of the 11 pesticides in black tea,green tea,oolong tea and dark tea at three spiked levels were in the ranges of 70.3％-119.1％,85.2％-118.7％ and 74.6％-113.3％,respectively.The relative standard deviations(RSDs) were all not more than 17.4％ (n =5).With the advantages of simplicity,rapidness,high sensitivity and good reproducibility,the method could meet the requirements of detection of 11 amide herbicide residues in tea.关键词
顶空固相微萃取/气相色谱-三重四极杆质谱法/酰胺类除草剂/茶叶Key words
headspace solid-phase microextraction(HS-SPME)/gas chromatography-triple quadrupole mass spectrometry(GC-MS/MS)/amide herbicides/tea分类
化学化工引用本文复制引用
李建勋,孙梦园,胡雪艳,吴兴强,常巧英,范春林..顶空固相 萃取结合气目色谱-三重四极杆质谱法快速测定茶叶中11种酰胺类除草剂残留[J].分析测试学报,2017,36(11):1339-1345,7.基金项目
中国检验检疫科学研究院基本科研业务费项目(2017JK025) （2017JK025）
