Rapid spectrophotometric determination of saccharin in soft drinks and pharmaceuticals using Azure B as reagent
- 1 January 1983
- journal article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 108 (1289) , 966-970
- https://doi.org/10.1039/an9830800966
Abstract
Saccharin reacts quantitatively with Azure B in disodium hydrogen orthophosphate - citric acid buffer, forming a blue product that can be extracted into chloroform. Beer's law is valid over the concentration range 2–68 µg ml–1 of saccharin and the molar absorptivity is 2.4 × 103 l mol–1 cm–1. Reasonable amounts of ingredients that are likely to be present in soft drinks and pharmaceuticals do not interfere. Recoveries of saccharin from soft drinks and pharmaceuticals were satisfactory.Keywords
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