Journal
FOOD CHEMISTRY
Volume 141, Issue 1, Pages 23-28Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2013.02.085
Keywords
Honey; Chloramphenicol; Magnetic molecularly imprinted polymer; Liquid chromatography-tandem mass spectrometry
Funding
- National Natural Science Foundation of China [21205010]
- Fundamental Research Funds for the Central Universities [DL10DB01]
- Hei Long Jiang Post-doctoral Foundation [LBH-Z11264]
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A rapid and selective method was successfully developed using magnetic molecularly imprinted polymer (MMIP) as sorbent for the extraction of chloramphenicol from honey samples. The extraction process was carried out in a single step by blending and stirring the sample, extraction solvent and polymers. When the extraction was completed, the MMIPs adsorbing the analyte were separated from the sample matrix by an external magnet. The analyte eluted from the MMIPs by methanol under ultrasound assisted was analysed by liquid chromatography-tandem mass spectrometry. Various parameters affecting the extraction efficiency were evaluated for achieving optimal recovery and reducing non-specific interactions. Under optimal conditions, the detection limit of CAP was 0.047 ng g(-1). The relative standard deviations of intra- and inter-day ranging from 4.1% to 5.3% and from 2.9% to 7.1% were obtained, respectively. The method was applied to determine CAP in six honey samples. The recoveries of CAP in these samples from 84.3% to 90.9% were obtained. (c) 2013 Elsevier Ltd. All rights reserved.
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