Precipitation of calcium oxalate and calcium phosphate in the presence of uric acid

被引：5
|
作者：
Sikiric, M [1 ]
BabicIvancic, V [1 ]
Tonkovic, M [1 ]
机构：
[1] RUDJER BOSKOVIC INST,ZAGREB,CROATIA
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1997年 / 121卷 / 2-3期
关键词：
calcium oxalate; calcium phosphate; precipitation; uric acid;
D O I：
10.1016/S0927-7757(96)03973-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The influence of uric acid on the precipitation of calcium oxalate and calcium phosphate from electrolyte solutions with pH(i) 6.5, ionic strength 0.3 mol dm(-3) and temperature 370 K, mimicking urinary conditions, has been investigated. The initial concentrations of precipitation components in the system were as follows: c(CaCl2) = 5 x 10(-3)-1 x 10(-1) mol dm(-3), c(H(2)Ox) = 3 x 10(-4)-5 x 10(-4) mol dm(-3); c(H2U) = 1.5 x 10(-4)-6 x 10(-3) mol dm(-3), and c(H3PO4) = 2.5 x 10(-2) mol dm(-3). Precipitates of calcium oxalate monohydrate, calcium hydrogenphosphate dihydrate, tri calcium phosphate trihydrate and sodium hydrogenurate monohydrate were characterized by X-ray diffraction, FTIR spectroscopy, and chemical and thermogravimetric analyses. (C) 1997 Elsevier Science B.V.
引用
收藏
页码：145 / 150
页数：6
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