Semiautomated fluorometric and colorimetric methods for the determination of reserpine in single tablets

✍ Scribed by B. N. Kabadi; A. T. Warren; C. H. Newman

• Publisher: John Wiley and Sons
• Year: 1969
• Tongue: English
• Weight: 794 KB
• Volume: 58
• Category: Article
• ISSN: 0022-3549
• DOI: 10.1002/jps.2600580919

✦ Synopsis

Semiautomated fluorometric and colorimetric methods for the determination of reserpine in single tablets are described for 0.25and 0.5-mg. potency tablets. A simple practical manual method for the extraction of reserpine from a large number of tablets is outlined. The yellow-green fluorogenic product formed by the reaction of reserpine and nitrous acid is analyzed in the automatic analyzer system. Using excitation maximum of 390 mp the fluoresence is measured at 510 mp. In the colorimetric determination the absorbance is measured spectrophotometrically at 390 mp. Using the colorimetric method, the effect of temperature on the reaction of reserpine and nitrous acid, and the effect of nitrogen gas on the recordings are investigated. In the fluorometric method there is no interference by the excipients and no effect of nitrogen gas on the recordings is noted. Further, this is more sensitive than the colorimetric method.

Keyphrases 0 Reserpine-single tablet analysis 0 Automated procedure-reserpine tablet analysis 0 Diagram-automated analysis procedure Nitrous acid-reagent 0 Fluorometry-analysis *