Application of Oxybutynin Selective Sensors for Monitoring the Dissolution Profile and Assay of Pharmaceutical Dosage Forms

Two ion-selective sensors of the plastic membrane type were prepared for the determination of oxybutynin hydrochloride (OxCl). They depend on the incorporation of the ion-associates with phosphotungestic acid or phosphomolybdic acid in a PVC matrix. A comparative study is made between their performa...

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Bibliographic Details
Published in:Analytical Sciences 2010/04/10, Vol.26(4), pp.437-442
Main Authors: HAMSHARY, Marwa S. EL, SALEM, Omar H., NASHAR, Rasha M. EL
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry Techniques, Analytical - instrumentation
Flow Injection Analysis
Hydrogen-Ion Concentration
Mandelic Acids - analysis
Mandelic Acids - chemistry
Membranes, Artificial
Molybdenum - chemistry
Pharmaceutical Preparations - analysis
Pharmaceutical Preparations - chemistry
Phosphoric Acids - chemistry
Phosphotungstic Acid - chemistry
Reproducibility of Results
Temperature
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Summary:Two ion-selective sensors of the plastic membrane type were prepared for the determination of oxybutynin hydrochloride (OxCl). They depend on the incorporation of the ion-associates with phosphotungestic acid or phosphomolybdic acid in a PVC matrix. A comparative study is made between their performance characteristics in batch and FIA conditions. The sensors have nearly the same usable concentration, temperature and pH range. They have a wide range of selectivity and can be applied for the determination of the relevant drug with nearly the same precision and accuracy in vitro. Dissolution testing was applied using the sensors; this offers a simple, rapid, cheap way out of sophisticated and high cost instruments used in the pharmacopeial method using HPLC. The investigated drug was determined in its pure and pharmaceutical preparations. The results were accurate and precise, as indicated by the recovery values and coefficients of variation.
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.26.437