色谱

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反相高效液相色谱法测定饲料添加剂阿散酸中的阿散酸及掺假物质对氨基苯磺酸

徐锦萍1*, 何珩2, 徐梦依1, 曲燕华1   

  1. 1. 华中科技大学同济医学院药学院, 湖北 武汉 430030; 2. 武汉工程大学邮电与信息工程学院, 湖北 武汉 430073
  • 收稿日期:2009-07-30 修回日期:2009-09-30 出版日期:2010-02-28 发布日期:1981-06-25
  • 通讯作者: 徐锦萍

Determination of arsanilic acid and sulfanilic acid as adulterant in feed additives by reversed-phase high performance liquid chromatography

XU Jinping1*, HE Heng2, XU Mengyi1, QU Yanhua1   

  1. 1. School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430030, China; 2. College of Post and Telecommunication of Wuhan Institute of Technology, Wuhan 430073, China
  • Received:2009-07-30 Revised:2009-09-30 Online:2010-02-28 Published:1981-06-25
  • Contact: XU Jinping

摘要: 建立了用于饲料添加剂阿散酸质量控制的反相高效液相色谱法。采用的色谱条件: Waters Bondapak C18柱(150 mm×4 mm, 5 μm)分离,以甲醇-水(用稀磷酸调节pH至2.9) (1:4, v/v)作流动相,流速1.0 mL/min,紫外检测波长为244 nm。在优化的色谱条件下,阿散酸和掺假物质对氨基苯磺酸在3 min内实现了基线分离。阿散酸和对氨基苯磺酸的线性范围均为5~200 mg/L,检出限(S/N=3)分别为0.20 mg/L和0.15 mg/L。该方法简便快速,适合饲料添加剂阿散酸的分析以及监测对氨基苯磺酸掺假。

关键词: 阿散酸, 掺假物质, 对氨基苯磺酸, 反相高效液相色谱法, 饲料添加剂

Abstract: A reversed-phase high performance liquid chromatographic (RP-HPLC) method was established for the determination of arsanilic acid and sulfanilic acid as adulterant in the feed additives. The separation was carried out on a Waters Bondapak C18 column, and methanol-water (pH 2.9 adjusted by 0.01 mol/L phosphoric acid) (1:4, v/v) was used as the mobile phase with a flow rate of 1.0 mL/min. A diode array detector was used at 244 nm as the detection wavelength. Arsanilic acid and sulfanilic acid were separated within 3 min. The linear ranges all were 5~200 mg/L and the detection limits (S/N=3) were 0.20 and 0.15 mg/L for arsanilic acid and sulfanilic acid, respectively. This method is simple and rapid, and suitable for the simultaneous determination of arsanilic acid and sulfanilic acid in feed additives.

Key words: adulterant, arsanilic acid, feed additive , sulfanilic acid, reversed-phase high performance liquid chromatography (RP-HPLC)