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液相色谱-串联质谱法测定食品中甲基磺草酮
引用本文:李爱军,齐犇,李凤兰,牟峻,王明泰,张代辉,符蓉. 液相色谱-串联质谱法测定食品中甲基磺草酮[J]. 理化检验(化学分册), 2011, 0(5)
作者姓名:李爱军  齐犇  李凤兰  牟峻  王明泰  张代辉  符蓉
作者单位:吉林出入境检验检疫局;吉林大学;河北省产品质量监督检验院;
基金项目:国家质检总局行业标准项目(2009B160)
摘    要:食品用乙腈-水(3+1)溶液进行提取,经凝胶色谱、固相萃取柱净化后,用液相色谱-串联质谱法进行测定和确证,外标法定量。色谱分离用甲醇和甲酸-水(0.1+99.9)溶液以不同体积比混合为流动相梯度洗脱,采用负离子模式电喷雾离子源在多反应监测模式下进行检测。甲基磺草酮的质量浓度在0.01~0.2 mg·L-1范围内与其峰面积呈线性关系。以4种食品样品为基体,加入3种浓度水平的甲基磺草酮标准做回收试验,测得回收率在73.2%~100.6%之间;测定值的相对标准偏差(n=10)在4.1%~11%之间。

关 键 词:液相色谱-串联质谱  食品  甲基磺草酮  检测  

LC-MS/MS Determination of Mesotrione in Foodstuffs
LI Ai-jun,QI Ben,LI Feng-lan,MU Jun,WANG Ming-tai,ZHANG Dai-hui,FU Rong. LC-MS/MS Determination of Mesotrione in Foodstuffs[J]. Physical Testing and Chemical Analysis Part B:Chemical Analgsis, 2011, 0(5)
Authors:LI Ai-jun  QI Ben  LI Feng-lan  MU Jun  WANG Ming-tai  ZHANG Dai-hui  FU Rong
Affiliation:LI Ai-jun1,QI Ben2,LI Feng-lan3,MU Jun1,WANG Ming-tai1,ZHANG Dai-hui1,FU Rong2(1.Jilin Entry-Exit Inspection and Quarantine Bureau,Changchun 130062,China,2.Jilin University,3.Hebei Provincial Institute for Supervision and Inspection of Product Quality,Shijiazhuang 050004,China)
Abstract:Foodstuff sample was extracted with acetonitrile-water(1+1) solution,and the extract obtained was purified by passing through gel permeation chromatographic(GPC) and solid phase extraction(SPE) columns.The eluate obtained was determined and identified by LC-MS/MS with external standard method for quantification.Mixtures of acetonitrile and HCOOH-H2O(0.1+99.9) solutions of various ratios were used as mobile phase in gradient elution and electrospray ionization source with negative ionization mode as well as ...
Keywords:LC-MS/MS  Foodstuff  Mesotrione  Determination  
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