TY - JOUR
T1 - Ferric iron in synthetic carbonate apatites
T2 - A Mössbauer effect study
AU - Mayer, I.
AU - Diab, H.
AU - Felner, I.
PY - 1992/2/1
Y1 - 1992/2/1
N2 - Hydroxyapatites were synthesized by a precipitation method at pH 7.0 and 9.0 with carbonate and Fe3+ added during precipitation. The carbonate content of the samples was in the range of 0-4.0% and the Fe3+ uptake was up to 1200 ppm. The apatite phase of the compounds was identified by IR and x-ray diffraction methods. The Mössbauer spectrum of the samples at 85°K shows a quadrupole split doublet and at 4.1°K a magnetically split six-line spectrum was obtained. These characteristics of the spectra were obtained for all the samples studied, regardless of the amount of carbonate or iron in them. The isomer shift, quadrupole splitting and the hyperfine magnetic field are very similar to those of FeOOH and also to what was found for iron in bones and teeth in in vivo experiments. The results thus indicate that Fe3+ both in synthetic and biological apatites is present as FeOOH.
AB - Hydroxyapatites were synthesized by a precipitation method at pH 7.0 and 9.0 with carbonate and Fe3+ added during precipitation. The carbonate content of the samples was in the range of 0-4.0% and the Fe3+ uptake was up to 1200 ppm. The apatite phase of the compounds was identified by IR and x-ray diffraction methods. The Mössbauer spectrum of the samples at 85°K shows a quadrupole split doublet and at 4.1°K a magnetically split six-line spectrum was obtained. These characteristics of the spectra were obtained for all the samples studied, regardless of the amount of carbonate or iron in them. The isomer shift, quadrupole splitting and the hyperfine magnetic field are very similar to those of FeOOH and also to what was found for iron in bones and teeth in in vivo experiments. The results thus indicate that Fe3+ both in synthetic and biological apatites is present as FeOOH.
UR - http://www.scopus.com/inward/record.url?scp=0026593336&partnerID=8YFLogxK
U2 - 10.1016/0162-0134(92)80007-I
DO - 10.1016/0162-0134(92)80007-I
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AN - SCOPUS:0026593336
SN - 0162-0134
VL - 45
SP - 129
EP - 133
JO - Journal of Inorganic Biochemistry
JF - Journal of Inorganic Biochemistry
IS - 2
ER -