New Method for Fluoride Determination

Spectrophotometric Determination of Fluoride in Water

“…Essentially all spectrophotometric methods for fluoride determination are similar in that they rely upon the partial destruction, by the fluoride ion, of a colored complex formed between a metallic ion and, in most instances, 1 Present address, Deering-Milliken Research Corp., Spartanburg, S. C. This method may be applied to the determination 3,6-anhydrogalactose in other algal polysaccharides, providing the sugar residues are known. Such information may be obtained by chromatography of the acid hydrolyzates.…”

“…The zirconium-sodium alizarin sulfonate method reported by Bumstead and Wells (2) is sensitive but is susceptible to interference by phosphate, sulfate, and chloride. The observation by Hines and Baltz (6) of a colored titanium-Fluoride in Water ascorbic acid complex led to the development of a method by Brownley and Sellers (1), which is based upon the bleaching of this complex by the fluoride ion.…”