The initial phases of calcium and magnesium phosphates precipitated from solutions of high to medium concentrations
作者： F. Abbona , H.E.Lundager Madsen , R. Boistelle
DOI: 10.1016/0022-0248(86)90205-8
关键词: Supersaturation 、 Phosphate 、 Inorganic chemistry 、 Struvite 、 Amorphous calcium phosphate 、 Brushite 、 Chemistry 、 Ammonium phosphate 、 Calcium 、 Magnesium
摘要: The precipitation of calcium and magnesium phosphates is performed at 25°C by mixing solutions ammonium phosphate chlorides under the condition [P] = [Ca] + [Mg] in large pH intervals. Before any nucleation concentration ranges from 0.50M to 0.01M. phases first precipitated are CaHPO4·2H2O (brushite), CaHPO4 (monetite), Ca3(PO4)2·xH2O (amorphous phosphate), MgNH4PO4·6H2O (struvite), MgHPO4·3H2O (newberyite). fields each phase determined discussed as a function pH, composition supersaturation. even supersaturated with respect several other but they never occur if their supersaturation highest.
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