食品科学 ›› 2009, Vol. 30 ›› Issue (20 ): 331-335.doi: 10.7506/spkx1002-6300-200920073

• 分析检测 • 上一篇    下一篇

液相色谱串联质谱法检测水产品硝基呋喃类代谢物的改进

刘四新1,胡先娥1,林正峰2,何雪莲2,刘红专2,李从发1,*   

  1. 1.海南大学食品学院 2.海南出入境检验检疫局技术中心
  • 收稿日期:2009-05-26 出版日期:2009-10-15 发布日期:2010-12-29
  • 通讯作者: 李从发
  • 基金资助:

    “十一五”国家科技支撑计划项目(2007BAD76B06)

Improved Liquid Chromatography-Tandem Mass Spectrometric Method for Determination of Nitrofuran Metabolites Residues in Aquatic Products

LIU Si-xin1,HU Xian-e1,LIN Zheng-feng2,HE Xue-lian2,LIU Hong-zhuan2,LI Cong-fa1,*   

  1. 1. College of Food Science and Technology, Hainan University, Haikou 570228, China;
    2. Technical Center, Hainan Exit-Entry Inspection and Quarantine Bureau, Haikou 570311, China
  • Received:2009-05-26 Online:2009-10-15 Published:2010-12-29
  • Contact: LI Cong-fa

摘要:

国标GB/T 20752—2006测定水产品硝基呋喃类药物代谢物的实际回收率为40%左右、线性范围0.2~2μg/kg。为改进不足,本实验改用乙酸乙酯提取、液液萃取净化,并适当改变LC-MS/MS检测中液相色谱条件和质谱条件,结果显示,样品前处理时间大大缩短,方法回收率81.3%~106.0%,相对标准偏差小于11%,线性范围0.1~4.0μg/kg,相关系数0.999以上,最低检出限0.1μg/kg。改进后的方法比国标方法在准确度、灵敏度和稳定性等方面均有所提高。

关键词: 硝基呋喃类药物代谢物, 液相色谱串联质谱法, 水产品

Abstract:

The Chinese national standard method, GB/T 20752—2006 has been used for the determination of nitrofuran metabolites residues in aquatic products using liquid chromatography-tandem mass spectrometry (LC-MS/MS), with a recovery rate of 40% and a linear range of 0.2-2 μg/kg. Extraction of test portions with ethyl acetate followed by clean-up using liquid-liquid extraction was adopted and appropriate adjustments of LC-MS/MS conditions were conducted as improvements for the method. Results showed that the pretreatment time was shortened, and the average spike recovery rates for six replicate determinations were elevated to 81.3%-106.0%, with a RSD of less than 11%. This method exhibited a linear range of 0.1-4 μg/kg (r2 > 0.999) and a limit of detection of 0.1  μg/kg.

Key words: nitrofuran metabolites residues, liquid chromatography-tandem mass spectrometry (LC-MS /MS), aquatic products

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