Advantages of TOF-SIMS Analysis of Hydroxyapatite and Fluorapatite in Comparison with XRD, HR-TEM and FT-IR
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概要
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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℃ 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 3570cm^<-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 PO_3 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.
- 日本歯科理工学会の論文
著者
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OKAZAKI Masayuki
Department of Biomaterials Science, Graduate School of Biomedical Science, Hiroshima University
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HIRATA Isao
Department of Biomaterials Science, Graduate School of Biomedical Sciences, Hiroshima University
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MATSUMOTO TAKUYA
Department of Earth and Space Science, Graduate School of Science, Osaka University
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TAKAHASHI Junzo
Department of Dental Materials Science and Technology, Faculty of Dentistry, Osaka University
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Matsumoto Takuya
Division Of Oromaxillofacial Regeneration Course For Integrated Oral Sciences And Stomatology Osaka
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Matsumoto Takuya
Department Of Chemical Science And Engineering Graduate School Of Engineering Kobe University
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Takahashi Junzo
Ids Co. Ltd Osaka Jpn
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Okazaki Masayuki
Department Of Fixed Prosthodontics Osaka University Graduate School Of Dentistry
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Okazaki Masayuki
Department Of Biomaterials Science Graduate School Of Biomedical Science Hiroshima University
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Hirata Isao
Hiroshima Univ. Hiroshima Jpn
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Takahashi J
Division Of Oral Maxillofacial Regeneration Graduate School Of Dentistry Osaka University
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Takahashi Junzo
The Research Institute For Iron Steel And Other Metals Tohoku University
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Takahashi Junzo
Department Of Dental Materials Science And Technology Faculty Of Dentistry Osaka University
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Hirata Isao
Department Of Biomaterial Science Division Of Molecular Medical Science Hiroshima University Graduat
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Okazaki Masayuki
Hiroshima Univ. Hiroshima Jpn
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Okazaki Masayuki
Department Of Biomaterial Science Division Of Molecular Medical Science Hiroshima University Graduat
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Matsumoto Takuya
Department Of Chemical Engineering And Materials Science Doshisha University
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Matsumoto Takuya
Department Of Bioregulatory Medicine Ehime University Graduate School Of Medicine
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Matsumoto Takuya
Department Of Biomaterials Okayama University Graduate School Of Medicine Dentistry And Pharmaceutical Sciences
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MATSUMOTO Takuya
Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University
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