Chloramphenicol is a broad-spectrum antibiotic widely used in the world in the past. Several health problems are related to its use. As a consequence, several countries (e.g. U.S.A, E.U, Canada...) have prohibited its use for food-producing animals. However, due to its broad spectrum of activity and its availability, Chloramphenicol is still used in several countries to treat food-producing animals. Therefore, chloramphenicol analysis is still a current affair. As no permitted limit has been established, E.U. has defined a Minimum Required Performance Limit (MRPL) set at 0.3µg/kg for products of animal origin (Commission decision 2003/181/EC).
In addition, food matrices are very complexes and induce ion-suppression phenomena which distort analysis results. For such a low MRPL threshold, a cleanup step is crucial in order to improve the sensitivity, the reliability and the specificity before analysis. It is therefore critical to develop a highly selective and sensitive analytical assay to control and monitor Chloramphenicol residues in difficult matrices such as food stuffs.
POLYINTELL has developed a new class of intelligent polymers (AFFINIMIP®) based on Molecularly Imprinted Polymers specific to Chloramphenicol used as a powerful technique for sample cleanup and pre-concentration. AFFINIMIP® SPE Chloramphenicol cartridge is a simple, fast, sensitive and selective tool for the extraction of Chloramphenicol from complex matrices.

This study describes the solid phase extraction of Chloramphenicol from Honey at Minimum Required Performance Limits (MRPLs) of 0.3µg/kg as defined by European Commission decision 2003/181/EC. We demonstrate in this application note that a reliable quantification of Chloramphenicol at low concentrations using AFFINIMIP® SPE Chloramphenicol and single quadrupole mass spectrometry detection is possible. The results demonstrate the efficiency of the clean-up: high recovery yield (> 90%), a good repeatability and reproducibility were obtained.