Determination of total fluoride in boron-containing solutions

Siqingaowa Borjigin, Toshiaki Yoshioka, Tadaaki Mizoguchi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We describe a pretreatment method before determining the total fluoride in solutions containing tetrafluoroborate ion (BF4-) with ion-selective electrodes (ISEs). BF4- was quantitatively converted to free fluoride by reacting with aluminum ions. The total fluoride concentration was then determined by ISE analysis without preliminary steam distillation using a tartrate-and tris(hydroxymethyl)methylamine (TRIS)-based total ionic strength adjustment buffer (TISAB). We investigated the effects of various factors on the decomposition of BF4- with aluminum ions, including the concentration of aluminum, pH, reaction temperature, and reaction time. The quantitative decomposition of BF4- was complete after 2 h at 50°C or 1 h at 70°C. 2010

Original languageEnglish
Pages (from-to)603-606
Number of pages4
Journalanalytical sciences
Issue number5
Publication statusPublished - 2010 May

ASJC Scopus subject areas

  • Analytical Chemistry


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