食品科学 ›› 2008, Vol. 29 ›› Issue (12): 572-574.

• 分析检测 • 上一篇    下一篇

高效液相色谱法测定牛奶中林可霉素的残留量

 陈明, 耿志明   

  1. 江苏省农业科学院食品质量安全与检测研究所;
  • 出版日期:2008-12-15 发布日期:2011-12-08

Determination of Lincomycin Residues in Milk with HPLC

 CHEN  Ming, GENG  Zhi-Ming   

  1. Institute of Food Safety Research and Inspection,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China
  • Online:2008-12-15 Published:2011-12-08

摘要: 研究建立牛奶中林可霉素残留量的高效液相色谱测定方法。样品用水相提取,离心分离,经C18固相萃取柱净化,在210nm波长下用二极管矩阵检测器检测。色谱柱为Agilent ZORBOX SBC18柱(4.6×250mm,5μm),以0.05mol/L硼砂溶液(用磷酸调节pH6.0)-甲醇(55:45,V/V)为流动相,流速1.0ml/min。林可霉素浓度在1.0~10.0μg/g范围内与峰面积呈良好的线性关系,平均回收率为82.9%~93.1%,变异系数为1.45%~4.58%,最低检测限为0.5μg/ml。本方法简便、快速、准确。

关键词: 高效液相色谱, 林可霉素, 牛奶

Abstract: A method was developed for detecting lincomycin residues in milk with HPLC with DAD detection at 210 nm. Lincomycin was extracted from milk with water and centrifuged. The solution was cleaned using C18 solid-phase extraction cartridge,and Agilent ZORBAX SB C18(4.6 mm×250 mm,5 μm) column was used. The mobile phase consisted of borax solution(adjusting pH to 6.0 with phosphoric acid ) and methanol( 55:45,V/V ) and the flow rate was 1.0 ml/min. The results showed that the peak area response has linear relationship with lincomycin concentration between 1.0 and 10.0 μg/g. The average recovery rate is 82.9% to 93.1 % and the coefficient of variation is 1.45% to 4.58%. The detection limit for lincomycin is 0.5 μg/ml. The method is simple,rapid and precise.

Key words: high-performance liquid chromatography(HPLC), lincomycin, milk