分析测试学报2011，Vol.30Issue(3)：316-320,5.DOI:10.3969/j.issn.1004-4957.2011.03.017
GC-MS法检测牛肉中拟除虫菊酯的残留量
Determination of Pyrethroid Residue in Beef by GC -MS
摘要
Abstract
A gas chromatography ( GC ) - negative chemical ionization - mass spectrometric ( NCI/MS ) method was established for the determination of 7 frequently used pyrethroid insecticides residues in beef. The sample was extracted with acetonitriles and cleaned up with neutral alumina chromatographic column, and then determined by GC - MS under the selected ion monitoring mode (SIM).Good accuracy, precision and sensitivity were obtained. The calibration curves of 7 pyrethriods were linear between peak areas and concentrations in the range of 10 - 1 000 μg/L with correlation coefficients(r2) more than 0. 997. The recoveries of 7 pyrethriods were in the range of 80％ - 108％ at three spiked concentration levels of 10, 20, 50 μg/kg, with relative standard deviations (RSDs)less than 12. 5％. The limits of detection (LOD) for all pyrethroid ranged from 0. 10 μg/kg to 2. 5 μg/kg and the limits of quantitation(LOQ) were in the range of 0. 50 -5.0 μg/kg.关键词
气相色谱-负化学离子源质谱/柱层析/选择离子监测/拟除虫菊酯/牛肉Key words
gas chromatography -negative chemical ionization mass spectrometry/ column chromatography/ selected ion monitoring/ pyrethroid/ beef分类
化学化工引用本文复制引用
李小桥,刘戎,沈祥广,丁焕中..GC-MS法检测牛肉中拟除虫菊酯的残留量[J].分析测试学报,2011,30(3):316-320,5.基金项目
2009年农业行业标准制定项目 （）
