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Reference type: Journal
Authors: Levi R, McNiven S, Piletsky SA, Cheong SH, Yano K, Karube I
Article Title: Optical detection of chloramphenicol using molecularly imprinted polymers.
Publication date: 1997
Journal: Analytical Chemistry
Volume: 69
Issue: (11)
Page numbers: 2017-2021.
DOI: 10.1021/ac960983b

Abstract: A practical optical sensing system for the determination of chloramphenicol (CAP), utilizing molecularly imprinted polymers (MIPs) and HPLC, has been developed, The method is based on competitive displacement of a chloramphenicol-methyl red (CAP-MR) dye conjugate from specific binding cavities in an imprinted polymer by the analyte. The best of these polymers was obtained using (diethylamino)ethyl methacrylate as functional monomer at a monomer:template ratio of 2:1. HPLC with a mobile phase containing CAP-MR was used as the detection system, and injection of CAP and, to a lesser degree, thiamphenicol resulted in proportional displacement of the conjugate, which was detected at 460 nn, The detection system showed a linear response over a range of 3 - 1000 μg/mL and effectively detected CAP extracted from serum, This system offers a tailor-made, selective, and rapid method for CAP detection, is able to discriminate between similar molecules, and is effective below and above the therapeutic range (10-20 μg/mL serum, potentially toxic above 25 μg/mL). This technique is quite general and should enable the use of MIPs in a wide variety of applications involving the detection of families of molecules which possess a distinct arrangement of functional groups

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