草酸钙在凝胶中的周期沉淀和化学不稳定性──尿结石鲕状结构探讨  

Chemical Instability and Periodic Precipitation of Calcium Oxalate in Gelatin Gel

作　　者：杨德同[1] 管智坚 庄起涛 

机构地区：[1]浙江医科大学药学系

出　　处：《Chinese Journal of Chemical Physics》1995年第4期380-384,共5页化学物理学报（英文）

摘　　要：本文研究了草酸钙在２５℃下，１０％明胶水溶液所形成的凝胶中在扩散情况下形成环状周期沉淀的规律，实验测定了成环速率常数的环状空间分布的间隔系数。并研究了Ｃａ＾２＋和Ｃ２Ｏ＾２－４离子浓度、明胶浓度和ＰＨ等以上述规律的影响，探索了环状周期沉淀生成的条件，这些结果对探讨人和动物体内尿结石鲕状结构的形成有一定意义。Abstract Periodic precipitation patterns of calcium oxalate in two-dimensional gel media have been investigated. The time law and the spacing law are verified. The dependences Of the velocity constant and spacing coefficient(P=X_(n+1)/X_n) on the concentration of inner and outer electrolytes, gel medium,and its pH have been studied in detail.The experimental conditions for the formation of Liesegang rings are also discuSsed. An attempt has been made to explain the crystalliztion of urinary stone of calcium oxalate.

关 键 词：草酸钙 凝胶 周期沉淀 尿结石 鲕状结构 

分 类 号：O627.22[理学—有机化学] R691.4[理学—化学]