Burns J R, Finlayson B
Invest Urol. 1980 Sep;18(2):174-7.
Calcium oxalate solutions in a wide range of concentrations were prepared and allowed to precipitate to determine how alterations in the calcium-to-oxalate ratio and the relative calcium oxalate supersaturation affected crystal morphology. The crystals were examined optically and with X-ray diffraction and their morphology was found to be closely related to relative supersaturation. Calcium oxalate monohydrate was the predominant species at all concentrations in which calcium oxalate precipitate was found. Calcium oxalate dihydrate was found only at high concentrations of both calcium and oxalate and underwent transformation to the monohydrate within 24 hr. Calcium oxalate trihydrate was not detected in any sample.
制备了一系列不同浓度的草酸钙溶液，并使其沉淀，以确定钙与草酸的比例变化以及相对草酸钙过饱和度如何影响晶体形态。通过光学显微镜和X射线衍射对晶体进行了检查，发现它们的形态与相对过饱和度密切相关。在所有发现有草酸钙沉淀的浓度下，一水合草酸钙都是主要的晶体种类。二水合草酸钙仅在钙和草酸浓度都很高时才会出现，并在24小时内转化为一水合草酸钙。在任何样品中都未检测到三水合草酸钙。
