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POTENTIOMETRIC DETERMINATION OF EPHEDRINE HYDROCHLORIDE USING PLASTIC MEMBRANE ION-SELECTIVE ELECTRODE
Faculty
Science
Year:
1993
Type of Publication:
Article
Pages:
371-376
Authors:
SHOUKRY, AF, ISSA, YM, SHOHAIB, RE, Zareh, MM
Journal:
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY JOHN WILEY \& SONS LTD
Volume:
58
Research Area:
Biotechnology \& Applied Microbiology; Chemistry; Engineering
ISSN
ISI:A1993ML54400009
Keywords :
EPHEDRINE, PHENYLEPHRINE TETRAPHENYLBORATE, PVC MEMBRANE ELECTRODE, POTENTIOMETRIC TITRATIONS
Abstract:
A plastic membrane electrode based on phenylephrine-tetraphenylborate ion association shows a Nernstian response to both ephedrinium (Ep+) and silver (Ag+) cations over the concentration ranges 2 x 10(-5)-10(-1) m and 10(-5)-10(-1) m for Ep+ and Ag+, respectively. The performance characteristics of the electrode were investigated. The electrode proved to be an excellent potentiometric sensor for the determination of Ep-hydrochloride in its pure solutions and pharmaceutical preparations using the extrapolation method and potentiometric titration using a standard solution of AgNO3.
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