Enhancement of Demasking of Fluoride Ion From its Aluminum Complexes by Dilution in the Determination With a Fluoride Ion-Selective Electrode

Masking of zirconium(IV) in the determination of fluoride with an ion-selective electrode: application to zirconium(IV) fluoride-based glasses

“…Such an effect has also been utilized to eliminate interference from aluminium . 20,25 The increase in R with pH found for the EDTA system [Fig. l(b)] at pH >6 is ascribed to the replacement of fluoride in the mixed ligand complexes by hydroxyl ions to form ZrL(0H) or Zr2b(OH)2.…”