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A new molecularly imprinted polymer for the selective extraction of naproxen from urine samples by solid-phase
Ester Caro1, Rosa M Marcé, Peter A G Cormack
1Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Imperial Tarraco 1, 43005 Tarragona, Spain.
Abstract:
A non-covalent molecularly imprinted polymer (MIP) was synthesised using naproxen (a non-steroidal, anti-inflammatory drug (NSAID)) as a template molecule. The MIP was chromatographically evaluated to confirm the imprinting effect, and was then applied as a selective sorbent in solid-phase extraction (SPE) to selectively extract naproxen. After this study, the MIP was used to extract naproxen from urine samples; it was demonstrated that by applying a selective washing step with acetonitrile (ACN) the compounds in the sample that were structurally related to naproxen could be eliminated.
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