Determination of p-aminosalicylic acid and m-aminophenol by derivative UV-spectrophotometry
β Scribed by C. Vetuschi; G. Ragno; P. Mazzeo
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 490 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0731-7085
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π SIMILAR VOLUMES
These data indicated that quantitative conversion of procarbazine hydrochloride to the azo compound occurred during the titration. No evident substitution of iodine into the phenyl ring resulted, therefore eliminating aromatic substitution as a source of interference.
## Abstract Firstβderivative UV spectrophotometry is shown to be a reliable method for the determination of the degree of __Nβ__acetylation of chitosan samples. A mathematical expression is derived that allows to determine the DA directly from the mass concentration of a chitosan solution and the f