Abstract
The chemical analysis of hydroxyapatite and fluorapatite was carried out using time-of-flight secondary ion mass spectrometry (TOF-SIMS). Hydroxyapatite and fluorapatite were synthesized at 80±1°C and pH 7.4±0.2. Fluorapatite was better crystallized, with its (300) reflection shifted to a slightly higher angle. High-resolution transmission electron microscopy clearly revealed a typical, regular hexagonal cross section perpendicular to the c-axis for fluorapatite and a flattened hexagonal cross section for hydroxyapatite. FT-IR spectra of fluorapatite confirmed the absence of OH absorption peak - which was seen in hydroxyapatite at about 3570 cm-1. TOF-SIMS mass spectra showed a peak at 40 amu due to calcium. In addition, a peak at 19 amu due to fluorine could be clearly seen, although the intensities of PO, PO 2, and PO3 were very low. It was confirmed that TOF-SIMS clearly showed the differences between positive and negative mass spectra of hydroxyapatite and fluorapatite, especially for F-. We concluded that TOF-SIMS exhibited distinct advantages compared with other methods of analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 508-514 |
| Number of pages | 7 |
| Journal | Dental Materials Journal |
| Volume | 24 |
| Issue number | 4 |
| Publication status | Published - Dec 2005 |
| Externally published | Yes |
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Keywords
- Fluorapatite
- Hydroxyapatite
- Tof-sims
ASJC Scopus subject areas
- Dentistry(all)
- Biomaterials
Cite this
Advantages of TOF-SIMS analysis of hydroxyapatite and fluorapatite in comparison with XRD, HR-TEM and FT-IR. / Okazaki, Masayuki; Hirata, Isao; Matsumoto, Takuya; Takahashi, Junzo.
In: Dental Materials Journal, Vol. 24, No. 4, 12.2005, p. 508-514.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Advantages of TOF-SIMS analysis of hydroxyapatite and fluorapatite in comparison with XRD, HR-TEM and FT-IR
AU - Okazaki, Masayuki
AU - Hirata, Isao
AU - Matsumoto, Takuya
AU - Takahashi, Junzo
PY - 2005/12
Y1 - 2005/12
N2 - The chemical analysis of hydroxyapatite and fluorapatite was carried out using time-of-flight secondary ion mass spectrometry (TOF-SIMS). Hydroxyapatite and fluorapatite were synthesized at 80±1°C and pH 7.4±0.2. Fluorapatite was better crystallized, with its (300) reflection shifted to a slightly higher angle. High-resolution transmission electron microscopy clearly revealed a typical, regular hexagonal cross section perpendicular to the c-axis for fluorapatite and a flattened hexagonal cross section for hydroxyapatite. FT-IR spectra of fluorapatite confirmed the absence of OH absorption peak - which was seen in hydroxyapatite at about 3570 cm-1. TOF-SIMS mass spectra showed a peak at 40 amu due to calcium. In addition, a peak at 19 amu due to fluorine could be clearly seen, although the intensities of PO, PO 2, and PO3 were very low. It was confirmed that TOF-SIMS clearly showed the differences between positive and negative mass spectra of hydroxyapatite and fluorapatite, especially for F-. We concluded that TOF-SIMS exhibited distinct advantages compared with other methods of analysis.
AB - The chemical analysis of hydroxyapatite and fluorapatite was carried out using time-of-flight secondary ion mass spectrometry (TOF-SIMS). Hydroxyapatite and fluorapatite were synthesized at 80±1°C and pH 7.4±0.2. Fluorapatite was better crystallized, with its (300) reflection shifted to a slightly higher angle. High-resolution transmission electron microscopy clearly revealed a typical, regular hexagonal cross section perpendicular to the c-axis for fluorapatite and a flattened hexagonal cross section for hydroxyapatite. FT-IR spectra of fluorapatite confirmed the absence of OH absorption peak - which was seen in hydroxyapatite at about 3570 cm-1. TOF-SIMS mass spectra showed a peak at 40 amu due to calcium. In addition, a peak at 19 amu due to fluorine could be clearly seen, although the intensities of PO, PO 2, and PO3 were very low. It was confirmed that TOF-SIMS clearly showed the differences between positive and negative mass spectra of hydroxyapatite and fluorapatite, especially for F-. We concluded that TOF-SIMS exhibited distinct advantages compared with other methods of analysis.
KW - Fluorapatite
KW - Hydroxyapatite
KW - Tof-sims
UR - http://www.scopus.com/inward/record.url?scp=33644824098&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33644824098&partnerID=8YFLogxK
M3 - Article
VL - 24
SP - 508
EP - 514
JO - Dental Materials Journal
JF - Dental Materials Journal
SN - 0287-4547
IS - 4
ER -