TITLE

Cetrimide Potentiometric PVC membrane Sensor

AUTHOR(S)
Faridbod, Farnoush; Khamseh-nejad, Masoumeh; Ganjali, Mohammad Reza; Norouzi, Parviz; Hajiaghababaei, Leila
PUB. DATE
March 2012
SOURCE
International Journal of Electrochemical Science;2012, Vol. 7 Issue 3, p1917
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In the present work, two types of potentiometric electrodes were constructed for determination of cetrimide. The sensors demonstrated advanced performances with a fast response time, a lower detection limit of 4.0x10-6 M and potential responses across the range of 5.0x10-6-1.0x10-3 M. The ensors enabled the cetrimide measurement in pharmaceutical formulations. The sensors respond based on ion-exchange mechanism. Cetrimide-phosphotungstate showed better and more stable responses in comparison with cetrimide-tetraphenyl borate ion-pair. PVC membrane electrode was made after series of experiments. The best PVC membrane electrode performance was achieved by a membrane composition of 30% PVC, 60% DBP, and 10% ion-pair. The electrode displays a good selectivity for cetrimide with respect to a number of common foreign inorganic and organic species.
ACCESSION #
73356027

 

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