Preparation and chemical characterization of high purity fluorapatite.
High purity fluorapatite (FAP) was prepared by solid state reaction, in flowing argon gas, at 1370 degrees C for 60 min. For chemical characterization of Ca(10)(PO(4))(6)F(2), the accuracy and reproducibility of different analytical methods were assessed. Methods with a good accuracy for the determination of Ca, P and F content were: titrations with EDTA for Ca determination (accuracy: -0.8%), spectrophotometric method for P determination (accuracy: +0.6%) and measurements with fluoride-selective electrode (accuracy +5.4%) for F determination.
Fábián
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Department of Silicate and Materials Engineering, University of Veszprém, POB 158, Egyetem u.10., Veszprém, H-8201, Hungary.
Kotsis
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I
Zimány
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Halmos
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P