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食品研究与开发:2017,38(10):154-158
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GC-MS/MS法测定水产品中残留硫丹及代谢物
王永芳1,2,王利强2,娄婷婷2,方国臻1
(1. 天津科技大学,天津 300457; 2. 天津出入境检验检疫局,天津 300461)
Determination of Residues of Endosulfan and Its Metabolite in Aquatic Products by GC-MS/MS
WANG Yong-fang1,2, WANG Li-qiang2, LOU Ting-ting2, FANG Guo-zhen1
(1. Tianjin University of Science and Technology, Tianjin 300457,China; 2. Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300461, China)
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投稿时间:2017-02-17    
中文摘要: 建立水产品中 α-硫丹、β-硫丹及硫丹硫酸盐残留量的分析方法。样品经乙腈溶液提取,浓缩后过凝胶柱 净化, 以选择反应监测离子 (selected reaction monitoring,SRM) 方式进行气相色谱-三重四极杆质谱联用法(gas chromatography-triple quadrupole mass spectrometer,GC-MS/MS)分析,采用外标法定量。硫丹在 0.004 μg/mL~0.5 μg/mL 范围内线性关系良好(R2>0.999),该方法的定量检出限为 0.004 mg/kg,回收率为 73.6 %~96.2 %,相对标准偏差为3.2 %~7.2 %。
Abstract:A GC-MS/MS method was established to analyse residues of α-endosulfan,β-endosulfan and endo- sulfan sulfate in aquatic products.Samples were extracted by acetonitrile, concentrated and cleaned up with gel chromatographic column,and analysed by GC-MS/MS with selected reaction monitoring(SRM)mode and quan- tified by an external standard method.Each compound showed a good linear relationship over the concentration range of 0.004 μg/mL-0.5 μg/mL(R2>0.999),the limit of quantitation(LOQ) of the method was 0.004 mg/kg, with the recovery between 73.6 % and 96.2 %,and RSD between 3.2 % and 7.2 %.
文章编号:201710036     中图分类号:    文献标志码:A
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