Determination of fluoride in potable waters by ion-exchange and potentiometric titration.
A procedure is described for the accurate titration of fluoride at the 1 mg l . level in potable water. The procedure employs an ion-exchange step for concentration of fluoride and removal of interfering ions, and Tb(IV) as titrant. Precision and relative error of the method are both 1%.
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Research Center The Foxboro Company Foxboro, Massachusetts, U.S.A.
Mannion
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Fletcher
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