Chinese Journal of Chromatography ›› 2016, Vol. 34 ›› Issue (3): 299-305.DOI: 10.3724/SP.J.1123.2015.10028

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Simultaneous determination of 13 β-lactam residues in water by high performance liquid chromatography-tandem mass spectrometry

ZHU Feng, JI Wenliang, RUAN Liping, LIU Hualiang, LI Fang   

  1. Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, China
  • Received:2015-10-18 Online:2016-03-08 Published:2012-09-28
  • Supported by:

    Jiangsu Science and Technology Department of Science and Technology Support Program (No. BE2010745); Key Provincial Talents Program in the 12th Five-Year Plan of Jiangsu Province (No. ZX201109).

Abstract:

A rapid method for the simultaneous screening and determination of 13 β-lactam residues in water was developed by high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). After high speed centrifugation, the sample was filtered through a 0.22 μm microporous filter membrane, and then separated on an Atlantis dC-C18 column (150 mm×4.6 mm, 5 μm, Waters) with the gradient elution of water (containing 0.05% (v/v) formic acid) and methanol-acetonitrile (4 : 6, v/v). The electrospray ionization (ESI) source in positive ion mode was used for multiple reaction monitoring (MRM) mode. The 13 β-lactam chemical components showed good linear relationships in their concentration ranges with the correlation coefficients (r2) more than 0.99. The recoveries were all in the range of 81.4%-102.3%, and the relative standard deviations (RSDs) were all less than 11%(n=7). The limits of detection (LODs) were in the range of 1.5-10 ng/L. This method is rapid, simple, sensitive, accurate, and provides the basis for the investigation and monitoring of the pollution levels of the antibiotics in water.

Key words: β-lactam residues, antibiotics, high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS), water

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