The emission produced by sulfite on oxidation by permanganate in acidic solution in the presence of riboflavin phosphate or brilliant sulfaflavine is used to determine 0.9-35 ng of sulfite. Only sulfide and thiosulfate also give emissions.
Chemiluminescent determination of tryptophan in a flow injection system
β Scribed by Abdulrahman A. Alwarthan
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 411 KB
- Volume
- 317
- Category
- Article
- ISSN
- 0003-2670
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β¦ Synopsis
A method is described for the determination of tryptophan in which it reacts with cerium(IV) in 0.15 M sulphuric acid. The method is rapid and precise and solutions can be analysed at a rate of 211 h-i with a relative standard deviation of ca. 0.45% at 12.5 pg ml-' and a limit of detection of 0.1 pg ml -I. The effect of some common amino acids and monosaccharides which may be present along with tryptophan in tissue or protein hydrolysates has been investigated.
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