Determination of fluoride in tricalcium phosphate (tcp) by Ion-selective electrode

Author: 
Yildiz, Y.
Abstract: 

Fluoride plays as much more important role in metabolic process. Fluoride ion concentration in tri-calcium phosphate above 5.0 mg/100 g creates health hazards. Many methods have been devised for the determination of fluorine. In this study, Ion-Selective Electrode Method has been used for the determination of fluoride in tri-basic calcium phosphate. The pKa for HF was 3.17, and buffer was 5.32, 99.0 % of fluorine was present as F- in the solution of TCP. Method range was 0.1 to more than 10 mg/L without dilution. The result shows that the concentration of fluoride in TCP was less than 0.005 %.

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