Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 69 (1962) > Annual Issue
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
©1962 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Brunzie, Gerald F. and Pflaum, Ronald T.
(1962)
"The Direct Spectrophotometric Determination of Fluoride Ion,"
Proceedings of the Iowa Academy of Science, 69(1), 186-193.
Available at:
https://scholarworks.uni.edu/pias/vol69/iss1/31