Determination of ascorbic acid in vegetables and fruits by differential pulse polarography
β Scribed by Oi-Wah Lau; Kwok-Keung Shiu; Shu-Ting Chang
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- English
- Weight
- 360 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0022-5142
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A differential pulse polarographic assay was developed for determining flucytosine in tablets. The drug is extracted from the sample with water and hydrochloric acid and, after the pH is adjusted, an aliquot is added to the cell and the solution is polarographed at the dropping mercury electrode ver
A differential pulse polarographic method is presented for the determination of total hypericin in phytotherapeutic preparations (drops, tablets and capsules). The polarographic behaviours of hypericin and of pseudohypericin were examined in various buffer systems over the pH range 3.5-10.0. In Brit