Author/Authors :
Lopes da Conceiçمo، نويسنده , , A.C. and Correia dos Santos، نويسنده , , M.M. and Simُes Gonçalves، نويسنده , , M.L.S. and Santos، نويسنده , , Fernando J.V.، نويسنده ,
Abstract :
The determination of fluoride ions in water samples was accomplished by using a gradient flow titration. A standard commercial combined electrode is used in a cell configuration that combines the gradient chamber and the electrode in a single unit. The methodology developed gives results with a relative standard deviation of about 3%. The average recoveries after spiking natural samples with fluoride are in the range 100–102%. The method was used successful in determining the fluoride concentration in water samples.
