The effect of supersaturation, oxalate/calcium stoichiometrical ratio (Oxa2-/Ca2+) and ionic strength on the crystallization of calcium oxalate (CaOxa) was investigated in gel systems by a double diffusion technique. ...The effect of supersaturation, oxalate/calcium stoichiometrical ratio (Oxa2-/Ca2+) and ionic strength on the crystallization of calcium oxalate (CaOxa) was investigated in gel systems by a double diffusion technique. The supersaturation affects the morphology, phase composition, and aggregation of CaOxa crystals. To a certain con- centration, the effect of Oxa2- ions on the aggregation of calcium oxalate monohydrate (COM) was much stronger than that of Ca2+ ions. It indicated that the increase of the concentration of Oxa2- ions can more efficiently pro- mote the formation of CaOxa stones. The increase of ionic strength and the molar ratio of Ca2+/ Oxa2- also pro- motes the aggregation of COM crystals.展开更多
文摘The effect of supersaturation, oxalate/calcium stoichiometrical ratio (Oxa2-/Ca2+) and ionic strength on the crystallization of calcium oxalate (CaOxa) was investigated in gel systems by a double diffusion technique. The supersaturation affects the morphology, phase composition, and aggregation of CaOxa crystals. To a certain con- centration, the effect of Oxa2- ions on the aggregation of calcium oxalate monohydrate (COM) was much stronger than that of Ca2+ ions. It indicated that the increase of the concentration of Oxa2- ions can more efficiently pro- mote the formation of CaOxa stones. The increase of ionic strength and the molar ratio of Ca2+/ Oxa2- also pro- motes the aggregation of COM crystals.
