Polarographic Determination of Famotidine in Dosage Forms

1989 ◽  
Vol 72 (4) ◽  
pp. 549-551
Author(s):  
Juan A Squella ◽  
Gladys Valencia ◽  
Igor Lemus ◽  
Luis J Nunez-Vergara
Keyword(s):  
Sample Preparation ◽  
Mercury Electrode ◽  
Dosage Forms ◽  
Polarographic Determination ◽  
Proton Reduction ◽  
Dropping Mercury Electrode ◽  
Neutral Media ◽  
Precision And Accuracy

Abstract Famotidine, which cannot be electrochemically reduced at the dropping mercury electrode, exhibits catalytic proton reduction waves. The peak obtained by in-phase ac polarography in neutral media is of analytical interest. Recovery studies and individual tablet assays are described. Results show adequate precision and accuracy. Sample preparation is not time consuming, and no excipient separation is required.

Polarographic determination of selenium in tea leaves using a dropping mercury electrode

1996 ◽  
Vol 56 (2) ◽  
pp. 177-180 ◽  
Author(s):  
Guanghan Lu ◽  
Jianhua Liu ◽  
Yiping Hang ◽  
Fang Wang
Keyword(s):  
Mercury Electrode ◽  
Polarographic Determination ◽  
Tea Leaves ◽  
Dropping Mercury Electrode

POLAROGRAPHIC DETERMINATION OF THE GAMMA ISOMER OF BENZENEHEXACHLORIDE IN INSECTICIDES AND SOIL

1949 ◽  
Vol 27f (9) ◽  
pp. 368-371
Author(s):  
H. Grass ◽  
E. Y. Spencer
Keyword(s):  
Potassium Iodide ◽  
Supporting Electrolyte ◽  
Mercury Electrode ◽  
Polarographic Determination ◽  
Simple Method ◽  
Dropping Mercury Electrode

A precise and simple method for the determination of the gamma isomer of benzenehexachloride in commercial insecticides and soil by the dropping mercury electrode is outlined. A satisfactory supporting electrolyte consisted of 1% potassium iodide and a trace of gelatin in 50% ethanol.

Simple Determination of Ranitidine in Dosage Forms by In-Phase Selective AC Polarography

1988 ◽  
Vol 71 (2) ◽  
pp. 388-390
Author(s):  
Juan A Squella ◽  
Luis A Zuñiga ◽  
Igor Lemus ◽  
Luis J. Nuñez Vergara
Keyword(s):  
Sample Preparation ◽  
Nitro Group ◽  
Dosage Forms ◽  
Polarographic Method ◽  
Precision And Accuracy

Abstract A new AC polarographic method for the determination of pharmaceutical forms of ranitidine is proposed, based on the electroactivity of the ranitidine nitro group. Individual and composite assays as well as recovery studies are described. Results show adequate precision and accuracy. Sample preparation is easy and no excipient separation is required.

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