CHARACTERIZATION BY INFRARED SPECTROMETRY OF CHLORINE AND FLUORINE IONS IN APATITES

Authors
BAUMER A GUILHOT B GILBERT R VERNAY AM OHNENSTETTER D
Citation
A. Baumer et al., CHARACTERIZATION BY INFRARED SPECTROMETRY OF CHLORINE AND FLUORINE IONS IN APATITES, Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre, 319(2), 1994, pp. 193-200
Citations number
16
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre → ACNP
ISSN journal
07644450
Volume
319
Issue
2
Year of publication
1994
Part
2
Pages
193 - 200
Database
ISI
SICI code
0764-4450(1994)319:2<193:CBISOC>2.0.ZU;2-F
Abstract
Synthetic hydroxyapatites with low chlorine and fluorine contents have been prepared hydrothermally according to the reaction: Ca(s) (PO4)3 OH + xNH4 Cl or + xNH4F. The infrared spectra of these samples show th at the 3,498 cm-1 band of OH, Cl apatites and 3,545 cm-1 band of OH, F apatites make it possible to detect respectively 350 ppm of chlorine and 150 ppm of fluorine. A comparative infrared study of natural apati tes confirms that the 3,485 and 3,480 cm-1 bands must, be attributed t o the O-H...Cl hydrogen bond.