食品科学 ›› 2009, Vol. 30 ›› Issue (12): 157-161.doi: 10.7506/spkx1002-6630-200912032

• 分析检测 • 上一篇    下一篇

RP-HPLC快速检测牛奶中7中四环素类药物残留量的研究

佘永新1,2,柳江英3,吕晓玲1,王 静1 ,*,曹维强4   

  1. 1.中国农业科学院农业质量标准与检测技术研究所 2.西藏自治区农牧科学院畜牧兽医研究所 3.西藏自治区司法中心医院 4.惠州出入境检验检疫局
  • 收稿日期:2008-09-08 修回日期:2008-12-12 出版日期:2009-06-15 发布日期:2010-12-29
  • 通讯作者: 王 静1 ,*, E-mail:w_jing2001@126.com
  • 基金资助:

    “十一五”国家科技支撑计划项目(2006BAD12B03-06)

Reversed Phase High Performance Liquid Chromatographic Determination of 7 Tetracyclines Residues in Bovine Milk

SHE Yong-xin1,2,LIU Jiang-ying3,LU Xiao-ling1,WANG Jing1,* CAO Wei-qiang4   

  1. (1. Institute of Quality Standards and Testing Technology for Agri-products, Chinese Academy of Agricultural Science, Beijing
    100081, China;2. Institute of Veterinary and Animal Husbandry, Tibet Academy of Agricultural and Animal Husbandry Sciences,
    Lhasa 850009, China;3. Tibet Central Hosptal for Judicial, Lhasa 850000, China;4. Huizhou Entry-Exit Inspection and
    Quarantine Bureau, Huizhou 450012, China)
  • Received:2008-09-08 Revised:2008-12-12 Online:2009-06-15 Published:2010-12-29
  • Contact: WANG Jing1,* E-mail:w_jing2001@126.com

摘要:

目的:建立快速检测牛奶中7 种四环素类药物残留的反相高效液相色谱法。方法:用0.1mol/L McIlvaine-EDTA 溶液和50% 三氯乙酸(TCA)溶液共同处理牛奶样品,通过Waters Oasis HLB 固相萃取柱进行净化处理。仪器条件中所用色谱柱为SunfireTM C18(250mm × 4.6mm,5μm)柱,以甲醇- 乙腈-0.01mol/L 草酸(pH2)为流动相,采用梯度洗脱模式。结果:7 种四环素类药物线性范围宽,峰面积和样品浓度在0.05~1μg/ml 范围内呈很好的线性关系,加标平均回收率为78.66%~106%,最低检测限为0.02μg/ml。结论:该方法操作简单、重现性好、检测限低、灵敏可靠,可在14min 内同时将四环素等7 种四环素类药物达到基线分离。

关键词: 反相高效液相色谱, 四环素类药物, 梯度洗脱, 牛奶

Abstract:

Residues of 7 tetracyclines were extracted with 0.1mol/L EDTA-McIlvaine buffer solution (pH 3.8) from bovine milk, pretreated with 50% trichloroacetic acid solution, and then subjected to cleanup with HLB solid phase extraction (SPE) cartridge. The analysis of 7 tetracyclines residues was conducted by reverse phase high-performance liquid chromatograph on a sunfireTM C18 column (250 mm × 4.6 mm, 5 μm i.d) with methanol - acetonitrile - 0.01 mol/L oxalic acid solution as a mobile phase (gradient elution) at the flow rate of 1.0 ml/min. The results showed that the method presented a wide-range high-linearity for analyzing these tetracyclines. The peak area was positively correlated with sample solution concentration in the range of 0.05 - 1.0 μg/ml. The average recovery was 78.66% - 106% and the lowest detection limit was 0.02 μg/ml. The method is sensitive, reliable and easy-operating, and can be used for simultaneous determination of 7 tetracyclines residues in bovine milk within 14 minutes.

Key words: RP-HPLC, tetraeyclines, gradient elution, bovine milk

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