Author:
Yang Xin,Xu De,Qiu Jian,Zhang Hua,Zhang Ying,Dong Ai,Ma Ying,Wang Jing
Abstract
AbstractAn efficient and sensitive method for simultaneous determination of 118 pesticide residues in teas has been established and validated. A multi-residue analysis of pesticides in tea involved extraction with ethyl acetate-hexane, clean-up using gel permeation chromatography (GPC) and solidphase extraction (SPE), and subsequent identification and quantification of the selected pesticides by gas chromatography-mass spectrometry (GC-MS). For most of the target analytes, optimized pretreatment processes led to no significant interference with analysis of sample matrix, and the determination of 118 compounds was achieved in about 60 min. In the linear range of each pesticide, the correlation coefficient was R 2 ≥ 0.99. At the low, medium and high three fortification levels of 0.05–2.5 mg kg−1, 118 pesticides average recoveries range from 61 % to 121 % and relative standard deviations (RSD) were in the range of 0.6–9.2 % for all analytes. The limits of detection for the method were 0.00030-0.36 mg kg−1, depending on each pesticide.
Publisher
Springer Science and Business Media LLC
Subject
Materials Chemistry,Industrial and Manufacturing Engineering,General Chemical Engineering,Biochemistry,General Chemistry
Reference11 articles.
1. Simultaneous determination of pesticide residues in Chinese teas by gas chromatography - mass spectrometry of;Huang;Journal Chromatography B,2007
2. Multiresidue method for the determination of residues of pesticides in fruits and vegetables by gas chromatography / mass spectrometry and liquid chromatography with fluorescence detection of;Fillion;Journal AOAC International,2000
3. Monitoring of pesticide residues in fresh vegetables fruits and other selected food items in Belgium of;Dejonckheere;Journal AOAC International,1996
4. Effects of tea consumption on nutrition and Health of;Yang;Journal Nutrition,2000
5. Application of polyphenylmethylsiloxane coated fiber for solid - phase microextraction combined with microwave - assisted extraction for the determination of organochlorine pesticides in Chinese teas of;Cai;Journal Chromatography A,2003
Cited by
27 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献