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.
Application of Photochemical Inhibition to the Fluorometric Determination of Nitroprusside in a Flow-Injection System
β Scribed by T. Perezruiz; C. Martinezlozano; V. Tomas; O. Val
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 342 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0026-265X
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β¦ Synopsis
An automatic procedure for the determination of nitroprusside has been developed. It is based on the strong quenching effect of the nitroprusside on the photochemical reaction between phloxin and ethylenediaminetetraacetic acid. The proposed flow-injection method allows the fluorimetric determination of nitroprusside in the range (6 \times 10^{-6}-7) (\times 10^{-5} \mathrm{M}) with a sampling frequency of 35 samples per hour. The method has been applied to the determination of the nitroprusside in human serum and pharmaceutical preparations. 1995 Academic Press, Inc.
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