期刊
出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02652030902822794
关键词
multiresidue; QuEChERS (quick; easy; cheap; effective; rugged; safe); gas chromatography-mass spectrometry by selected ion monitoring (GC/MS-SIM); wine; pesticide; analysis
资金
- Ministry of Heath, China [WKJ2006-2-10]
- China Postdoctoral Foundation [20080440456]
- 863 Project from the Ministry of Science, China [2007AA10Z433]
A method based on a QuEChERS (quick, easy, cheap, effective, rugged, safe) sample preparation method and gas chromatography with mass spectrometric detection by selected ion monitoring (GC/MS-SIM) was developed for simultaneous determination of 77 pesticide residues in wine. An extraction of 10 ml of sample with acetonitrile followed by liquid-liquid partition formed by the addition of 4 g MgSO4 and 3 g NaCl was applied in the sample preparation. The clean-up was carried out by applying dispersive solid-phase with 150 mg MgSO4 as well as 50 mg primary secondary amine (PSA). One quantitation ion and at least two identification ions were selected in the analytical method for each pesticide compound by GC/MS. The recovery data were obtained by spiking blank samples at two concentration levels (0.05 and 0.21 mg l(-1)). The recoveries of all pesticides were in the range 70-110%, with intra-day precision of less than 15%, and the inter-day precision of less than 22% and 15% for 0.05 and 0.2 mg l(-1) fortification levels, respectively. Linearity was between 0.02 and 2 mg l(-1) with determination coefficients (R-2) greater than 0.98 for compounds. The limits of quantification (LOQs) for the 77 pesticides ranged front 0.003 to 0.05 mg l(-1). This method was applied for routine analysis in market products.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据