Determination of Pentachloronitrobenzene and Its Metabolites in Ginseng by Gas Chromatography-Ion Trap Tandem Mass Spectrometry

文献类型： 外文期刊

第一作者： Li Chong-Jiu

作者： Li Chong-Jiu;Dong Feng-Shou;Liu Xin-Gang;Zheng Yong-Quan;Li Jing

作者机构：

关键词： Gas chromatography-ion trap tandem sepectrometry;pentachloronitrobenzene;pentachloroaniline;pentachlorothioanisole;multiple reaction monitoring;ginseng

期刊名称：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.134； 五年影响因子：0.909 ）

ISSN： 0253-3820

年卷期： 2008 年 36 卷 12 期

页码：

收录情况： SCI

摘要： For validation and fast determination of residues of pentachloronitrobenzene and its metabolites in ginseng, the residual method was established to determinate pentachloronitrobenzene ( PCNB), pentachloroaniline (PCA) and pentachlorothioanisole ( PCTA) in ginseng by gas chromatography-ion trap tandem mass spectrometry (GC-MS/MS). Homogenized ginseng sample were extracted by n-haxene, cleaned up by florisil solid phase extraction (LC-Florisil)cartridge. Identification was carried out by GC-MS/MS in multiple reaction monitoring mode. The limit of detection of PCNB and PCA in ginseng was both 1 mu g/kg, and that of PCTA was 0.1 mu g/kg. The recoveries of PCNB, PCA and PCTA in ginseng were 82.2% - 89.4%, 82.3% - 84.7% and 84.1% - 88.5%, respectively, at spiked levels of 0. 01 mu g/g - 0. 5 mu g/g. The relative standard deviations (RSD) were less than 8.6%, and the limit of detection (LOD) was defined in terms of 10 times baseline noise, varied from 0. 1 ng/g to 1 ng/g, depending on the compound.

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