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Reference type: Journal
Authors: Yin F
Article Title: Capacitive sensors using electropolymerized o-phenylenediamine film doped with ion-pair complex as selective elements for the determination of pentoxyverine.
Publication date: 2004
Journal: Talanta
Volume: 63
Issue: (3)
Page numbers: 641-646.
DOI: 10.1016/j.talanta.2003.12.004

Abstract: A capacitive sensing method based on electropolymerized o- phenylenediamine film doped with pentoxyverine ion-pair complex as selective element was successfully developed for the determination of pentoxyverine. Ion-pair complex, pentoxyverine-tetraphenylborate or pentoxyverine-picrolonate, was embedded in electropolymerized o-phenylenediamine film by electropolymerizing technique. The effects of working frequency and test solution pH on the detection of pentoxyverine were investigated in detail and optimized. For the sensor modified with pentoxyverine-tetraphenylborate, calibration curve was linear over the concentration range of 5.0 x 10(-7) to 1.0 x 10(-4) M with a detection limit of 1.0 x 10(-7) M at pH 7. The proposed sensor exhibited high selectivity and sensitivity to pentoxyverine. The results in sample analysis confirmed the usefulness of the proposed ISC sensor for quantitative analysis, and also indicated that this method might find applications in the assay of other drugs. (C) 2003 Elsevier B.V. All rights reserved

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