气相色谱-质谱联用检测进出口水产品中氟乐灵残留  

Determination of Trifluralin Residues in Imported and Exported Aquatic Products by Gas Chromatography-Mass Spectrometry

作　　者：李晓玉 付建 隋涛 曹鹏[1,3] 池连学 娄喜山 

机构地区：[1]烟台出入境检验检疫局,山东烟台264000 [2]姻台杰科检测服务有限公司,山东烟台265231 [3]山东农业大学食品科学与工程学院,山东泰安271018

出　　处：《食品科学》2011年第16期315-317,共3页Food Science

摘　　要：采用液液萃取的前处理方式,以气相色谱-质谱联用仪(gas chromatography-mass spectrometry,GC-MS)检测水产品中氟乐灵的残留量。水产品经过匀质,丙酮提取,正己烷进行液液分配,弗罗里硅土柱净化后,用气相色谱-质谱联用仪进行测定和确认,外标法定量。该方法在5～100μg/L质量浓度范围内,相关系数R2为0.99996,具有良好的线性关系,检测限均为1.0μg/kg。分别在鳗鱼、梭子蟹、黄花鱼、印度虾和蛤蜊5种水产品中添加1～4μg/L氟乐灵,回收率在82.0%～93.6%之间。该方法操作简单、灵敏度高,可以满足水产品中氟乐灵的定性定量检测要求。A gas chromatography-mass spectrometry（GC-MS） method is presented for determining trifluralin residues in aquatic products in this paper.In the method,extraction with acetone,partition with n-hexane and cleanup on a Florisil solid-phase extraction column were used for sample preparation,and quantification was performed by the external standard method.Trifluralin concentration exhibited a good linearity over the range of 5-100μg/L,with a correlation coefficient of 0.99996.The detection limit of this method was 1.0μg/kg for trifluralin.The recovery rates of trifluralin in eel,corvine,India shrimp,clams and swimming crab across the spike levels of 1.0,2.0μg/kg and 4.0μg/kg were 82.0%-93.6%.This simple and sensitive method can be applied for the determination of trifluralin residues in aquatic products.

关 键 词：气相色谱-质谱法(gas chromatography-mass spectrometry GC-MS) 水产品 氟乐灵 

分 类 号：O657.63[理学—分析化学]