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Document Type

Research

Abstract

A direct method for the determination of fluoride ion in the parts per million range is described. The color reaction of fluoride ion and lanthanum chelate of 3-aminomethylalizarin- N,N-diacetic acid forms the basis for the spectrophotometric method. The intense blue fluoride complex in a mixed solvent system of 16% dimethylformamide- 84% water is stable and independent of pH in the range of 4.6-5.6. Other halogens and common anions do not interfere in the measurements. Interfering ions are removed through ion exchange separations. Results on the determination of fluorine in selected samples are presented.

Publication Date

1962

Journal Title

Proceedings of the Iowa Academy of Science

Volume

69

Issue

1

First Page

186

Last Page

193

Copyright

© Copyright 1962 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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