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Determination of diclofenac in pharmaceutical preparations using a novel PVC membrane sensor
Faculty
Science
Year:
2003
Type of Publication:
Article
Pages:
29-31
Authors:
HASSAN, SSM, Elmosallamy, MAF, Mahmoud, WH, Almarzooqi, MH
Journal:
PHARMAZIE GOVI-VERLAG GMBH
Volume:
58
Research Area:
Pharmacology \& Pharmacy; Chemistry
ISSN
ISI:000180642600007
Keywords :
Determination , diclofenac , pharmaceutical preparations using , novel
Abstract:
A novel potentiometric PVC membrane sensor for determination of diclofenac: in pharmaceutical preparations has been developed. The sensor is based on the use of the 2,4,6-tri(2-pyridyl)-s-triazine iron(II) diclofenac complex {[}diclofenac-TPTZ-Fe(II)] as an electroactive material in a plasticized PVC membrane matrix. The sensor exhibits fast, stable and near Nernstian response for diclofenac over the concentration range 10(-2)-10(-6) M and pH 5.5-9.5. Application to quality control analysis of diclofenac in various dosage forms shows an average recovery of 99\% with a mean standard deviation of 0.2\%. No significant interferences are caused by inorganic and organic anions and various drug excipients and diluents.
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