Direct detection of chloramphenicol in honey by neutral desorption-extractive electrospray ionization mass spectrometry

Anal Bioanal Chem. 2014 Nov;406(29):7705-14. doi: 10.1007/s00216-014-8176-y. Epub 2014 Oct 3.

Abstract

Herein, we constructed a platform of neutral desorption-extractive electrospray ionization mass spectrometry (ND-EESI-MS) for direct and rapid detection of chloramphenicol (CAP) in honey samples diluted with methanol. Under the optimized working conditions, the quantitative information of CAP residues was acquired effectively by EESI-Ion Trap MS (n) . Using heated methanol-N2 as spray reagent, we reduced the limit of determination (LOD) from 73.3 ng/mL to 0.3 ng/mL, and the CAP detection is linear in the range of 1-5000 ng/mL (R = 0.9947). For the honey samples with CAP of 10, 100, and 1000 ng/mL, the recoveries were 133.0, 80.6, and 101.1%, and the relative standard deviations were 5.96, 8.82, and 8.71%, respectively. The reproducibility assays showed the stability of this method. Therefore, this ND-EESI-MS method is powerful for direct, rapid, and quantitative CAP analysis in honey samples with high sensitivity, precision, and specificity.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Anti-Bacterial Agents / analysis
  • Chloramphenicol / analysis*
  • Environmental Pollutants / analysis*
  • Food Analysis / methods*
  • Food Contamination / analysis*
  • Honey / analysis*
  • Liquid-Liquid Extraction / methods*
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Spectrometry, Mass, Electrospray Ionization / methods*

Substances

  • Anti-Bacterial Agents
  • Environmental Pollutants
  • Chloramphenicol