An electrochemical method for fluoride analysis based on a naphthalene urea derivative as a selective receptor.

The use of a naphthalene urea derivative as a host molecule for selective fluoride binding allows us to develop a highly selective and sensitive electrochemical method for fluoride analysis without the interference of other halogen atoms. All the parameters affecting the differential pulse voltammetric response of the host molecule used as a fluoride receptor have been optimized and the mechanisms of the electrochemical behavior have been elucidated. The inhibition in the electrochemical signal of the anionic receptor due to the increase of the fluoride amounts allows the determination of F-with an LOD of 3.16 x 10(-6) M with an RSD (%) value lower than 4.8% and an Er (%) value lower than 3.8%.