食品科学 ›› 2010, Vol. 31 ›› Issue (6): 216-219.doi: 10.7506/spkx1002-6630-201006051

• 分析检测 • 上一篇    下一篇

基于表面等离子体共振技术测定猪肉中磺胺类药物残留

夏 敏1,罗 进2,张经华1,谷学新2   

  1. 1.北京市理化分析测试中心 2.首都师范大学化学系
  • 收稿日期:2009-03-20 修回日期:2009-09-21 出版日期:2010-03-15 发布日期:2010-12-29
  • 通讯作者: 罗进 E-mail:luojin_iloveyou@163.com

Determination of Total Sulfonamide Residue in Pork Using Surface Plasmon Resonance

XIA Min1,LUO Jin2,ZHANG Jing-hua1,GU Xue-xin2   

  1. 1. Beijing Center for Physical and Chemical Analysis, Beijing 100089, China;
    2. Department of Chemistry, Capital Normal University, Beijing 100048, China
  • Received:2009-03-20 Revised:2009-09-21 Online:2010-03-15 Published:2010-12-29
  • Contact: LUO Jin2 E-mail:luojin_iloveyou@163.com

摘要:

建立一种基于表面等离子体共振技术(SPR)测定猪肉中磺胺类药物残留的新方法。采用传感芯片为共振芯片,以0.1mol/L NaOH 溶液为再生溶液,HBS-EP 为缓冲溶液,流速为80μL/min,运用SPR 技术测定猪肉中磺胺类药物残留总量。结果表明,磺胺类药物在0.5~50ng/mL 范围内,传感芯片表面所产生的相对共振强度与质量浓度有良好的响应关系,平均回收率为75.7%~99.2%,精密度实验RSD 为1.3%(n=6),检测限为2.5μg/kg。该方法简便、灵敏,可以为产品的安全与质量控制提供快速分析方法。

关键词: 表面等离子体共振, 磺胺类药物, 快速分析

Abstract:

A new method based on surface plasmon resonance (SPR) was established to determine total sulfonamide residue in pork. A commercial sensor chip CM5 was activated and derivatized with HBS-EP buffer at a flow rate of 80 μL/min, blocked with 1 mol/L cholamine aqueous solution at a flow rate of 10 μL/min, and regenerated with 0.1 mol/L sodium hydroxide aqueous solution to obtain a resonance chip. Relative resonance intensity generated from resonance chip surface presented a good response to sulfonamide concentration ranging from 0.5 to 50 ng/mL. The method exhibited an average spike recovery range of 75.7% to 99.2% at three levels and a limit of detection of 2.5 μg/kg. Reproducibility experiments gave a RSD of 1.3% (n = 6). This method presents the benefits of simplicity and high sensitivity, thereby providing a rapid analytical approach for the control of quality and safety of meat products.

Key words: surface plasmon resonance, sulfonamides, rapid determination

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