Besides Fluoride Selective Electrode amd Ion Chromatography. What other analysis can one use to analyse for Fluoride in soil,water and rock sampes?
The best techniques to determine floride concentrations are those you have already cited, otherwise, Check out this publication:
Article New analytical method for total fluorine determination in so...
There are two colorimetric methods.
A. The SPADNS method is based on the reaction between fluoride and a zirconium-dye lake. Fluoride reacts with the dye lake, dissociating a portion of it into a colorless complex anion (ZrF62-); and the dye. As the amount of fluoride increases, the color produced becomes progressively lighter.
B. The alizarin method. The sample is distilled in the automated system, and the distillate is reacted with alizarin fluorine blue-lanthanum reagent to form a blue complex that is measured colorimetrically at 620 nm.
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