Direct and Rapid Quantification of Calcium Phosphate Precipitate on Titanium by X-Ray Fluorescence Analysis Using Fundamental Parameter Method

Satoh Kozue, Komata Masashi, Mizuhira Manabu, Wagatsuma Kazuaki, Ohtsu Naofumi

doi:10.2320/jinstmet.j2014026

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Other Title

ファンダメンタルパラメータ法を利用した蛍光 X 線分析によるチタン基板上リン酸カルシウム析出物の直接迅速定量
ファンダメンタルパラメータホウオリヨウシタケイコウ Xセンブンセキニヨルチタンキバンジョウリンサンカルシウムセキシュツブツノチョクセツジンソクテイリョウ

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Abstract

In the present study, we propose a characterization technique to determine the amount of calcium phosphate (CP) precipitate formed on a titanium substrate. The quantitative analysis of the CP precipitate on a metallic substrate is significant for researchers of metallic biomaterials because CP that spontaneously precipitates in a simulated-body fluid gives information on the bioactivity of the metallic biomaterials. We focused on X-ray fluorescence (XRF) analysis and adopted the thin-film fundamental parameter method (thin-film FP method) because it allows direct (non-pretreatment) and rapid quantitative analysis without any reference materials. We show that XRF analysis using the thin-film FP method can be adequately applied to the quantitative analysis of the CP precipitate in the simulated-body fluid immersion test. We also show that the density of the CP-precipitate layer can be estimated by combining the XRF results with images of cross-sectional scanning electron microscopy (SEM).<br> Consequently, XRF analysis combined with the thin-film FP method can provide a convenient means to evaluate the CP precipitate on a titanium substrate, which improves the accuracy and accessibility of the simulated-body fluid immersion test.<br>

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Journal of the Japan Institute of Metals and Materials

Journal of the Japan Institute of Metals and Materials 79 (1), 1-8, 2015

The Japan Institute of Metals and Materials

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