Journal
JOURNAL OF SEPARATION SCIENCE
Volume 35, Issue 1, Pages 137-144Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201100767
Keywords
High-performance liquid chromatography; Milk; Molecularly imprinted polymer monolith; Polymer monolith microextraction; Thiamphenicol
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Funding
- Education Department of Hubei Province of China [T201101]
- National Nature Science Foundation of China [20975030, 20835004]
- Natural Science Foundation of Hubei province of China [2009CDB364]
- Hubei University [020091130-ky2006004]
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A novel solid-phase microextraction (SPME) method based on molecularly imprinted polymer (MIP) monolith as the sorbent for the selective extraction of thiamphenicol (TAP) in milk and honey was developed. The newly developed MIP monolith was produced using TAP as the template molecule, 4-vinylpyridine (4-VP) as the functional monomer. The TAP-MIP monolith synthesized in a micropipette tip could be connected with syringes in different sizes simply to perform SPME process without any other treatment. The derivated MIP monolith showed high selectivity and enrichment ability for TAP. A simple, rapid and sensitive method for the determination of TAP in milk and honey using polymer monolith microextraction (PMME) based on the MIP monolith combined with high-performance liquid chromatography-photodiodes array detector was developed. Several parameters affecting MIP monolith microextraction were investigated, including the flow rate, volume, pH and salt concentration of sample, the type and volume of washing solution, the type and flow rate of eluent. The recovery of this method for TAP was investigated and high recoveries of 92.9-99.3% from milk and honey were obtained with relative standard deviations less than 4.9%.
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