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Updated: Aug 19, 2026
Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
Published on: February 23, 2017
ESR study of Gd3+ and Mn2+ ions sorbed on hydroxyapatite
Tokiyoshi Matsuda1, Chihiro Yamanaka, Motoji Ikeya
1Department of Earth and Space Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan. matsuda.tokiyoshi@kochi-tech.ac.jp
Abstract:
Adsorption of Gd3+ and Mn2+ into hydroxyapatite (HAP (Ca5(PO4)3(OH)2) was studied by ESR, ion chromatography and ICP-AES to investigate the U-uptake model. HAP absorbed Gd3+ via a cation exchange reaction and resulted in a signal width of 240 mT. The growth of the thermally stable Gd3+ signal in HAP was also fitted by saturation and diffusion equations. The ESR signals of Gd3+ and Mn2+ were observed overlapping the CO2- signals, however, the dose-response curves of the CO2- signal were similar to that of control HAP.
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