Polarographic assay of niacinamide in pharmaceutical preparations
Copyright policy )Polarographic assay of niacinamide in pharmaceutical preparations
A rapid polarographic determination of niacinamide pharmaceutical preparations had been developed and is compared with the Konig colorimetric assay using barbituric acid. The niacinamide is extracted from the sample using a combination column and liquid-liquid partition chromatography. The extracted niacinamide is determined in a supporting electrolyte of 0.1 N sodium hydroxide using a conventional d.c. polarograph equipped with an H-cell. A wide variety of samples was analyzed repetitively by this procedure and the standard deviation was calculated. The method is rapid, specific, and accurate.
- United States Food and Drug Administration United States
Dosage Forms, Niacinamide, Chromatography, Methods, Colorimetry, Polarography
Dosage Forms, Niacinamide, Chromatography, Methods, Colorimetry, Polarography
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