Septonex–tetraphenylborate screen-printed ion selective electrode for the potentiometric determination of Septonex in pharmaceutical preparations

The Analyst ◽  
2011 ◽  
Vol 136 (7) ◽  
pp. 1488 ◽  
Author(s):  
Gehad G. Mohamed ◽  
M. F. El-Shahat ◽  
A. M. Al-Sabagh ◽  
M. A. Migahed ◽  
Tamer Awad Ali
Keyword(s):  
Pharmaceutical Preparations ◽  
Ion Selective Electrode ◽  
Potentiometric Determination ◽  
Selective Electrode ◽  
Screen Printed

Determination of Vitamin Bi in Pharmaceutical Preparations Using a Lead Ion Selective Electrode and Atomic Absorption Spectroscopy

1979 ◽  
Vol 62 (2) ◽  
pp. 315-319
Author(s):  
Saad S M Hassan ◽  
Mohamed T Zaki ◽  
Mohamed H Eldesouki
Keyword(s):  
Standard Deviation ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Pharmaceutical Preparations ◽  
Ion Selective Electrode ◽  
Lead Ion ◽  
Fluorometric Method ◽  
Selective Electrode

Abstract Simple, rapid, and accurate methods have been developed for determining vitamin Bx in pharmaceutical preparations without prior separation of the vitamin. The methods are based on the desulfurization reaction with potassium plumbite and measurement of the unreacted lead (II) ions at 217 nm using atomic absorption spectroscopy (AAS), or by titration with EDTA at pH 4.5 with the lead ion selective electrode and Gran's plot. The results compare favorably with those obtained using the USP fluorometric method. Recoveries of pure vitamin Bx averaged 99.1%, with a standard deviation of 0.8%, and 99.0%, with a standard deviation of 0.7%, for the AAS and ion selective electrode procedures, respectively.

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