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- 藤原 努
- 神奈川歯科大学化学教室
書誌事項
- タイトル別名
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- Studies on solubility of hydroxyapatites.
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Calium, cadmium and lead hydroxyapatites (Ca-, Cd- and Pb-HAp) were prepared and their solbility was examined in inorganic and organic acid.<BR>Activity solubility products of the hydroiyapatites were calculated from the concentration of metal cation and phosphorus, and pH in the equilibrium solution, resulting in the pKsp values of 115±0.3, 128±0.7 and 158±0.4 for Ca-, Cd- and Pb-HAp, respectively.<BR>During preparation of the apatites, in the range of pH=3.5-6.5 at 37-60°C, a small amount of Cd-HAp was formed in the Cd5H2 (PO4) 4 (H2O) 4 crystals and as a singe phase in the range of pH=5-9 at 100°C. Pb-HAp was prepared at pH=3-12 and was not influencd by temperature.<BR>Except DL-malic acid, tartaric acid and citric acid: The solubility of Ca-HAp in the normal alkyl mono-, di- and tri-basic acids and oxycarboxylic acids in the pH range 4.0-6.5 can be calculated according to an equation as follws, <BR>l·log[Ca2+]total·[OH-]2/1+KcaA·[An-]+m·log[H+]·[P]total=const.<BR>where, KcaA=Stability constant of respective calcium ion complexes with organic acids[An-]=Concentration of organic acid ion
収録刊行物
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- 歯科基礎医学会雑誌
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歯科基礎医学会雑誌 30 (1), 54-69, 1988
歯科基礎医学会
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詳細情報 詳細情報について
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- CRID
- 1390282679660788864
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- NII論文ID
- 130004001522
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- ISSN
- 03850137
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
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- 使用不可