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Reference type: Journal
Authors: Chapuis F, Mullot JU, Pichon V, Tuffal G, Hennion MC
Article Title: Molecularly imprinted polymers for the clean-up of a basic drug from environmental and biological samples.
Publication date: 2006
Journal: Journal of Chromatography A
Volume: 1135
Issue: (2)
Page numbers: 127-134.
DOI: 10.1016/j.chroma.2006.09.076
Alternative URL: http://www.sciencedirect.com/science/article/B6TG8-4M57H6W-2/2/3eaf758352c84d640a2166e2b23e39bb

Abstract: A molecularly imprinted polymer (MIP) was synthesized and evaluated to selectively extract an alpha-blocker, i.e. alfuzosin, from human plasma. The synthesis of the MIP was performed in dichloromethane with methacrylic acid as monomer and the target drug as template. A first series of experiments was carried out in dichloromethane to estimate the potential of the MIP in its specific recognition medium, i.e. dichloromethane, by developing a selective procedure and by measuring the capacity of the sorbent. An optimized procedure was developed for the selective extraction of alfuzosin with a recovery close to 100% in this medium and a specific capacity of 1.3 μmol g-1 of MIP was measured. A study in aqueous media was also carried out by a comprehensive approach of the retention mechanism in order to build a selective procedure of extraction. The effects of the amount and of the charge of cations were studied and an optimal pH value was defined to limit matrix effects. Then, the alfuzosin MIP was then directly used to selectively extract the target drug from human plasma with an extraction recovery of 60%. Lastly, a soil was extracted by a pressurized solvent and the resulting extract was cleaned up on the MIP, showing the possibility to use this selective sorbent for the sample treatment of various complex matrices
Template and target information: alfuzosin
Author keywords: molecularly imprinted polymer, Solid-phase extraction, α-blocker, human plasma, soil


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