Naked-Eye Detection of Fluoride Using Zr(IV)-EDTA Complex and Pyrocatechol Violet

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Naked-eye detection of fluoride using Zr(IV)-EDTA complex and pyrocatechol violet.

A method for the visual detection of fluoride is presented using an aqueous solution of Pyrocatechol Violet (PV), which changes its color from yellow to blue by the formation of a ternary complex with Zr(H2O)2EDTA; also, the blue color of PV-Zr-EDTA readily shifts to orange red upon the addition of a moderate concentration of fluoride. The mechanism has been interpreted by a ligand-exchange rea...

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ژورنال

عنوان ژورنال: Analytical Sciences

سال: 2005

ISSN: 0910-6340,1348-2246

DOI: 10.2116/analsci.21.973